Publications

@article{Ohmori2017,

title = {Special issue on addressing many-body problems with cold atoms and molecules},

author = {Kenji Ohmori and Guido Pupillo and Joseph H Thywissen and Matthias Weidemüller},

url = {https://iopscience.iop.org/article/10.1088/1361-6455/aa9d13},

doi = {10.1088/1361-6455/aa9d13},

year  = {2017},

date = {2017-12-01},

journal = {Journal of Physics B: Atomic, Molecular and Optical Physics},

volume = {51},

number = {2},

pages = {020201},

publisher = {IOP Publishing},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Murthy2017,

title = {High-temperature pairing in a strongly interacting two-dimensional Fermi gas},

author = {Puneet A Murthy and Mathias Neidig and Ralf Klemt and Luca Bayha and Igor Boettcher and Tilman Enss and Marvin Holten and Gerhard Zürn and Philipp M Preiss and Selim Jochim},

url = {http://science.sciencemag.org/content/early/2017/12/20/science.aan5950.abstract},

year  = {2017},

date = {2017-12-01},

urldate = {2017-12-01},

journal = {Science},

abstract = {The nature of the normal phase of strongly correlated fermionic systems is an outstanding question in quantum many-body physics. We use spatially resolved radio-frequency spectroscopy to measure pairing energy of fermions across a wide range of temperatures and interaction strengths in a two-dimensional gas of ultracold fermionic atoms. We observe many-body pairing at temperatures far above the critical temperature for superfluidity. In the strongly interacting regime, the pairing energy in the normal phase significantly exceeds the intrinsic two-body binding energy of the system and shows a clear dependence on local density. This implies that pairing in this regime is driven by many-body correlations, rather than two-body physics. Our findings show that pairing correlations in strongly interacting two-dimensional fermionic systems are remarkably robust against thermal fluctuations.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Nosske2017,

title = {Two-dimensional magneto-optical trap as a source for cold strontium atoms},

author = {Ingo Nosske and Luc Couturier and Fachao Hu and Canzhu Tan and Chang Qiao and Jan Blume and Y. H. Jiang and Peng Chen and Matthias Weidemüller},

url = {https://link.aps.org/doi/10.1103/PhysRevA.96.053415},

doi = {10.1103/PhysRevA.96.053415},

year  = {2017},

date = {2017-11-01},

journal = {Phys. Rev. A},

volume = {96},

issue = {5},

pages = {053415},

publisher = {American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Haefner2017,

title = {Role of the intraspecies scattering length in the Efimov scenario with large mass difference},

author = {S. Häfner and J. Ulmanis and E. D. Kuhnle and Yujun Wang and Chris H. Greene and M. Weidemüller},

url = {http://link.aps.org/doi/10.1103/PhysRevA.95.062708},

doi = {10.1103/PhysRevA.95.062708},

year  = {2017},

date = {2017-06-01},

journal = {Phys. Rev. A},

volume = {95},

issue = {6},

pages = {062708},

publisher = {American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ulmanis2017,

title = {Heteronuclear Efimov Scenario in Ultracold Quantum Gases},

author = {J. Ulmanis},

url = {https://link.springer.com/book/10.1007/978-3-319-51862-6},

doi = {10.1007/978-3-319-51862-6},

year  = {2017},

date = {2017-03-01},

journal = {Springer Theses},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Weidemueller2017,

title = {Rydbergs Baukasten für die Quantensimulation},

author = {Matthias Weidemüller},

url = {https://www.pro-physik.de/physik-journal/oktober-2017-0},

year  = {2017},

date = {2017-01-01},

journal = {Physik Journal},

volume = {16},

issue = {10},

pages = {22},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Hoeltkemeier2017,

title = {A dense gas of laser-cooled atoms for hybrid atom-ion trapping},

author = {B. Höltkemeier and J. Glässel and H. Lopez and M. Weidemüller},

url = {http://rdcu.be/oAQB},

doi = {10.1007/s00340-016-6624-4},

year  = {2017},

date = {2017-01-01},

urldate = {2017-01-01},

journal = {Applied Physics B},

volume = {123},

number = {1},

pages = {51},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{PhysRevA.94.062703,

title = {Dynamics of a single trapped ion immersed in a buffer gas},

author = {B. Höltkemeier and P. Weckesser and H. Lopez and M. Weidemüller},

url = {http://link.aps.org/doi/10.1103/PhysRevA.94.062703},

doi = {10.1103/PhysRevA.94.062703},

year  = {2016},

date = {2016-12-01},

journal = {Phys. Rev. A},

volume = {94},

issue = {6},

pages = {062703},

publisher = {American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ulmanis2016b,

title = {Heteronuclear Efimov scenario with positive intraspecies scattering length},

author = {J. Ulmanis and S. Häfner and R. Pires and E. D. Kuhnle and Yujun Wang and Chris H. Greene and M. Weidemüller},

url = {http://link.aps.org/doi/10.1103/PhysRevLett.117.153201},

doi = {10.1103/PhysRevLett.117.153201},

year  = {2016},

date = {2016-10-01},

journal = {Phys. Rev. Lett.},

volume = {117},

pages = {153201},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Hoeltkemeier2016,

title = {Buffer-Gas Cooling of a Single Ion in a Multipole Radio Frequency Trap Beyond the Critical Mass Ratio},

author = {B. Höltkemeier and P. Weckesser and H. Lopez and M. Weidemüller},

url = {http://link.aps.org/doi/10.1103/PhysRevLett.116.233003},

doi = {10.1103/PhysRevLett.116.233003},

year  = {2016},

date = {2016-06-01},

journal = {Phys. Rev. Lett.},

volume = {116},

issue = {23},

pages = {233003},

publisher = {American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ulmanis2016a,

title = {Heteronuclear Efimov resonances in ultracold quantum gases},

author = {J. Ulmanis and S. Häfner and E. D. Kuhnle and M. Weidemüller},

url = {https://academic.oup.com/nsr/article/3/2/174/2460258},

doi = {10.1093/nsr/nww018},

year  = {2016},

date = {2016-03-01},

urldate = {2016-03-01},

journal = {National Science Review},

volume = {3},

pages = {174},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ulmanis2016,

title = {Universal three-body recombination and Efimov resonances in an ultracold Li-Cs mixture},

author = {J. Ulmanis and S. Häfner and R. Pires and F. Werner and D. S. Petrov and E. D. Kuhnle and M. Weidemüller},

url = {http://link.aps.org/doi/10.1103/PhysRevA.93.022707},

doi = {10.1103/PhysRevA.93.022707},

year  = {2016},

date = {2016-02-01},

journal = {Phys. Rev. A},

volume = {93},

issue = {2},

pages = {022707},

publisher = {American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{1509.03635,

title = {Direct observation of ultrafast many-body electron dynamics in an ultracold Rydberg gas},

author = {Nobuyuki Takei and Christian Sommer and Claudiu Genes and Guido Pupillo and Haruka Goto and Kuniaki Koyasu and Hisashi Chiba and Matthias Weidemüller and Kenji Ohmori},

url = {http://www.nature.com/articles/ncomms13449},

doi = {10.1038/ncomms13449},

year  = {2016},

date = {2016-01-01},

journal = {Nature Comm.},

volume = {7},

pages = {13449},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gavryusev2016,

title = {Interaction Enhanced Imaging of Rydberg P states},

author = {V. Gavryusev and M. Ferreira-Cao and A. Kekić and G. Zürn and A. Signoles},

url = {http://dx.doi.org/10.1140/epjst/e2015-50339-8},

doi = {10.1140/epjst/e2015-50339-8},

year  = {2016},

date = {2016-01-01},

journal = {The European Physical Journal Special Topics},

volume = {225},

number = {15},

pages = {2863--2889},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gavryusev2016a,

title = {Density matrix reconstruction of three-level atoms via Rydberg electromagnetically induced transparency},

author = {V. Gavryusev and A. Signoles and M. Ferreira-Cao and G. Zürn and C. S. Hofmann and G. Günter and H. Schempp and M. Robert-de-Saint-Vincent and S. Whitlock and M. Weidemüller},

url = {http://iopscience.iop.org/article/10.1088/0953-4075/49/16/164002},

doi = {10.1088/0953-4075/49/16/164002},

year  = {2016},

date = {2016-01-01},

urldate = {2016-01-01},

journal = {Journal of Physics B: Atomic, Molecular and Optical Physics},

volume = {49},

number = {16},

pages = {164002},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Boettcher2016,

title = {Equation of State of Ultracold Fermions in the 2D BEC-BCS Crossover Region},

author = {I Boettcher and L Bayha and D Kedar and P. A. Murthy and M Neidig and M. G. Ries and A. N. Wenz and G Zürn and S Jochim and T Enss},

url = {https://link.aps.org/doi/10.1103/PhysRevLett.116.045303},

doi = {10.1103/PhysRevLett.116.045303},

year  = {2016},

date = {2016-01-01},

urldate = {2016-01-01},

journal = {Physical Review Letters},

volume = {116},

number = {4},

pages = {45303},

note = {Publisher: American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Murmann2015a,

title = {Antiferromagnetic Heisenberg Spin Chain of a Few Cold Atoms in a One-Dimensional Trap},

author = {S. Murmann and F. Deuretzbacher and G. Zürn and J. Bjerlin and S. M. Reimann and L. Santos and T. Lompe and S. Jochim},

url = {http://link.aps.org/doi/10.1103/PhysRevLett.115.215301},

doi = {10.1103/PhysRevLett.115.215301},

issn = {0031-9007},

year  = {2015},

date = {2015-11-01},

urldate = {2015-11-01},

journal = {Physical Review Letters},

volume = {115},

number = {21},

pages = {215301},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{PhysRevLett.115.093002,

title = {Correlated Exciton Transport in Rydberg-Dressed-Atom Spin Chains},

author = {H. Schempp and G. Günter and S. Wüster and M. Weidemüller and S. Whitlock},

url = {http://link.aps.org/doi/10.1103/PhysRevLett.115.093002},

doi = {10.1103/PhysRevLett.115.093002},

year  = {2015},

date = {2015-08-01},

journal = {Phys. Rev. Lett.},

volume = {115},

issue = {9},

pages = {093002},

publisher = {American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Murthy2015,

title = {Observation of the Berezinskii-Kosterlitz-Thouless Phase Transition in an Ultracold Fermi Gas.},

author = {P A Murthy and I Boettcher and L Bayha and M Holzmann and D Kedar and M Neidig and M G Ries and A N Wenz and G Zürn and S Jochim},

url = {http://www.ncbi.nlm.nih.gov/pubmed/26182082},

doi = {10.1103/PhysRevLett.115.010401},

issn = {1079-7114},

year  = {2015},

date = {2015-07-01},

urldate = {2015-07-01},

journal = {Physical review letters},

volume = {115},

number = {1},

pages = {010401},

abstract = {We experimentally investigate the first-order correlation function of a trapped Fermi gas in the two-dimensional BEC-BCS crossover. We observe a transition to a low-temperature superfluid phase with algebraically decaying correlations. We show that the spatial coherence of the entire trapped system can be characterized by a single temperature-dependent exponent. We find the exponent at the transition to be constant over a wide range of interaction strengths across the crossover. This suggests that the phase transitions in both the bosonic regime and the strongly interacting crossover regime are of Berezinskii-Kosterlitz-Thouless type and lie within the same universality class. On the bosonic side of the crossover, our data are well described by the quantum Monte Carlo calculations for a Bose gas. In contrast, in the strongly interacting regime, we observe a superfluid phase which is significantly influenced by the fermionic nature of the constituent particles.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ries2015,

title = {Observation of Pair Condensation in the Quasi-2D BEC-BCS Crossover.},

author = {M G Ries and A N Wenz and G Zürn and L Bayha and I Boettcher and D Kedar and P A Murthy and M Neidig and T Lompe and S Jochim},

url = {http://www.ncbi.nlm.nih.gov/pubmed/26196783},

doi = {10.1103/PhysRevLett.114.230401},

issn = {1079-7114},

year  = {2015},

date = {2015-06-01},

urldate = {2015-06-01},

journal = {Physical review letters},

volume = {114},

number = {23},

pages = {230401},

abstract = {The condensation of fermion pairs lies at the heart of superfluidity. However, for strongly correlated systems with reduced dimensionality the mechanisms of pairing and condensation are still not fully understood. In our experiment we use ultracold atoms as a generic model system to study the phase transition from a normal to a condensed phase in a strongly interacting quasi-two-dimensional Fermi gas. Using a novel method, we obtain the in situ pair momentum distribution of the strongly interacting system and observe the emergence of a low-momentum condensate at low temperatures. By tuning temperature and interaction strength, we map out the phase diagram of the quasi-2D BEC-BCS crossover.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ulmanis2015,

title = {Universality of weakly bound dimers and Efimov trimers close to Li - Cs Feshbach resonances},

author = {J. Ulmanis and S. Häfner and R. Pires and E. D. Kuhnle and M. Weidemüller and E. Tiemann},

url = {http://iopscience.iop.org/1367-2630/17/5/055009/},

doi = {10.1088/1367-2630/17/5/055009},

year  = {2015},

date = {2015-05-01},

journal = {New J. Phys.},

volume = {17},

issue = {5},

pages = {055009},

publisher = {IOP Science},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Murmann2015,

title = {Two Fermions in a Double Well: Exploring a Fundamental Building Block of the Hubbard Model},

author = {Simon Murmann and Andrea Bergschneider and Vincent M Klinkhamer and Gerhard Zürn and Thomas Lompe and Selim Jochim},

url = {https://link.aps.org/doi/10.1103/PhysRevLett.114.080402},

doi = {10.1103/PhysRevLett.114.080402},

year  = {2015},

date = {2015-02-01},

urldate = {2015-02-01},

journal = {Physical Review Letters},

volume = {114},

number = {8},

pages = {80402},

note = {Publisher: American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ries2015a,

title = {Observation of Pair Condensation in the Quasi-2D BEC-BCS Crossover},

author = {M. G. Ries and A. N. Wenz and G. Zürn and L. Bayha and I. Boettcher and D. Kedar and P. Murthy and M. Neidig and T. Lompe and S. Jochim},

url = {http://link.aps.org/doi/10.1103/PhysRevLett.114.230401},

year  = {2015},

date = {2015-01-01},

urldate = {2015-01-01},

journal = {Physical Review Letters},

volume = {114},

number = {23},

pages = {230401},

abstract = {The condensation of fermion pairs lies at the heart of superfluidity. However, for strongly correlated systems with reduced dimensionality the mechanisms of pairing and condensation are still not fully understood. In our experiment we use ultracold atoms as a generic model system to study the phase transition from a normal to a condensed phase in a strongly interacting quasi-two-dimensional Fermi gas. Using a novel method, we obtain the in situ pair momentum distribution of the strongly interacting system and observe the emergence of a low-momentum condensate at low temperatures. By tuning temperature and interaction strength, we map out the phase diagram of the quasi-2D BEC-BCS crossover.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Murthy2014,

title = {Matter-wave Fourier optics with a strongly interacting two-dimensional Fermi gas},

author = {P A Murthy and D Kedar and T Lompe and M Neidig and M G Ries and A N Wenz and G Zürn and S Jochim},

url = {https://link.aps.org/doi/10.1103/PhysRevA.90.043611},

doi = {10.1103/PhysRevA.90.043611},

year  = {2014},

date = {2014-10-01},

urldate = {2014-10-01},

journal = {Physical Review A},

volume = {90},

number = {4},

pages = {43611},

note = {Publisher: American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{murthy_matter-wave_2014,

title = {Matter-wave Fourier optics with a strongly interacting two-dimensional Fermi gas},

author = {P. A. Murthy and D. Kedar and T. Lompe and M. Neidig and M. G. Ries and A. N. Wenz and G. Zürn and S. Jochim},

url = {https://link.aps.org/doi/10.1103/PhysRevA.90.043611},

doi = {10.1103/PhysRevA.90.043611},

year  = {2014},

date = {2014-10-01},

urldate = {2014-10-01},

journal = {Physical Review A},

volume = {90},

number = {4},

pages = {043611},

abstract = {We demonstrate and characterize an experimental technique to directly image the momentum distribution of a strongly interacting two-dimensional quantum gas with high momentum resolution. We apply the principles of Fourier optics to investigate three main operations on the expanding gas: focusing, collimation, and magnification. We focus the gas in the radial plane using a harmonic confining potential and thus gain access to the momentum distribution. We pulse a different harmonic potential to stop the rapid axial expansion, which allows us to image the momentum distribution with high resolution. Additionally, we propose a method to magnify the mapped momentum distribution to access interesting momentum scales. All these techniques can be applied to a wide range of experiments, and in particular to study many-body phases of quantum gases.},

note = {Publisher: American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pires2014b,

title = {Analyzing Feshbach resonances: A $^6$Li-$^133$Cs case study},

author = {R. Pires and M. Repp and J. Ulmanis and E. D. Kuhnle and M. Weidemüller and T. G. Tiecke and C. H. Greene and B. P. Ruzic and J. L. Bohn and E. Tiemann},

url = {http://link.aps.org/doi/10.1103/PhysRevA.90.012710},

doi = {10.1103/PhysRevA.90.012710},

year  = {2014},

date = {2014-07-01},

urldate = {2014-07-01},

journal = {Phys. Rev. A},

volume = {90},

issue = {1},

pages = {012710},

publisher = {American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pires2014,

title = {Observation of Efimov Resonances in a Mixture with Extreme Mass Imbalance},

author = {R. Pires and J. Ulmanis and S. Häfner and M. Repp and A. Arias and E. D. Kuhnle and M. Weidemüller},

url = {http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.250404},

doi = {10.1103/PhysRevLett.112.250404},

year  = {2014},

date = {2014-06-01},

journal = {Phys. Rev. Lett.},

volume = {112},

pages = {250404},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Schempp2014,

title = {Full Counting Statistics of Laser Excited Rydberg Aggregates in a One-Dimensional Geometry},

author = {H. Schempp and G. Günter and M. Robert-de-Saint-Vincent and C. S. Hofmann and D. Breyel and A. Komnik and D. W. Schönleber and M. Gärttner and J. Evers and S. Whitlock and M. Weidemüller},

url = {http://link.aps.org/doi/10.1103/PhysRevLett.112.013002},

doi = {10.1103/PhysRevLett.112.013002},

year  = {2014},

date = {2014-01-01},

journal = {Phys. Rev. Lett.},

volume = {112},

issue = {1},

pages = {013002},

publisher = {American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Hofmann2013b,

title = {An experimental approach for investigating many-body phenomena in Rydberg-interacting quantum systems},

author = {C. S. Hofmann and G. Günter and H. Schempp and N. M. L. Müller and A. Faber and H. Busche and M. Robert-de-Saint-Vincent and S. Whitlock and M. Weidemüller},

url = {http://dx.doi.org/10.1007/s11467-013-0396-7},

doi = {10.1007/s11467-013-0396-7},

year  = {2014},

date = {2014-01-01},

journal = {Frontiers of Physics},

volume = {9},

pages = {571-586},

publisher = {Springer Berlin Heidelberg},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Weidemuller2013b,

title = {Atomic Interactions at a Distance},

author = {Matthias Weidemüller},

url = {http://link.aps.org/doi/10.1103/Physics.6.71},

doi = {10.1103/Physics.6.71},

year  = {2013},

date = {2013-06-01},

journal = {Physics},

volume = {6},

pages = {71},

publisher = {American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Weidemuller2013,

title = {Quantum physics: Spooky action gets collective},

author = {Matthias Weidemüller},

url = {http://dx.doi.org/10.1038/nature12259},

issn = {1476-4687},

year  = {2013},

date = {2013-06-01},

journal = {Nature},

volume = {498},

pages = {438},

publisher = {Nature Publishing Group},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Sala2013,

title = {Coherent molecule formation in anharmonic potentials near confinement-induced resonances.},

author = {S Sala and G Zürn and T Lompe and A N Wenz and S Murmann and F Serwane and S Jochim and A Saenz},

url = {http://www.ncbi.nlm.nih.gov/pubmed/25167405},

doi = {10.1103/PhysRevLett.110.203202},

issn = {1079-7114},

year  = {2013},

date = {2013-05-01},

urldate = {2013-05-01},

journal = {Physical review letters},

volume = {110},

number = {20},

pages = {203202},

abstract = {We perform a theoretical and experimental study of a system of two ultracold atoms with tunable interaction in an elongated trapping potential. We show that the coupling of center-of-mass and relative motion due to an anharmonicity of the trapping potential leads to a coherent coupling of a state of an unbound atom pair and a molecule with a center of mass excitation. By performing the experiment with exactly two particles we exclude three-body losses and can therefore directly observe coherent molecule formation. We find quantitative agreement between our theory of inelastic confinement-induced resonances and the experimental results. This shows that the effects of center-of-mass to relative-motion coupling can have a significant impact on the physics of quantum systems near center-of-mass to relative-motion coupling resonances.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Guenter2013,

title = {Observing the Dynamics of Dipole-Mediated Energy Transport by Interaction-Enhanced Imaging},

author = {G. Günter and H. Schempp and M. Robert-de-Saint-Vincent and V. Gavryusev and S. Helmrich and C. S. Hofmann and S. Whitlock and M. Weidemüller},

url = {http://www.sciencemag.org/content/342/6161/954.abstract},

doi = {10.1126/science.1244843},

year  = {2013},

date = {2013-01-01},

journal = {Science},

volume = {342},

number = {6161},

pages = {954-956},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Hofmann2013,

title = {Sub-Poissonian Statistics of Rydberg-Interacting Dark-State Polaritons},

author = {C. S. Hofmann and G. Günter and H. Schempp and M. Robert-de-Saint-Vincent and M. Gärttner and J. Evers and S. Whitlock and M. Weidemüller},

url = {http://link.aps.org/doi/10.1103/PhysRevLett.110.203601},

doi = {10.1103/PhysRevLett.110.203601},

year  = {2013},

date = {2013-01-01},

journal = {Phys. Rev. Lett.},

volume = {110},

pages = {203601},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gotz2013,

title = {Photoionization of optically trapped ultracold atoms with a high-power 

	light-emitting diode},

author = {Simone Götz and Bastian Höltkemeier and Thomas Amthor and Matthias Weidemüller},

url = {http://link.aip.org/link/?RSI/84/043107/1},

doi = {10.1063/1.4795475},

year  = {2013},

date = {2013-01-01},

journal = {Review of Scientific Instruments},

volume = {84},

number = {4},

pages = {043107},

publisher = {AIP},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Repp2013,

title = {Observation of interspecies $^6$Li-$^133$Cs Feshbach resonances},

author = {M. Repp and R. Pires and J. Ulmanis and R. Heck and E. D. Kuhnle and M. Weidemüller and E. Tiemann},

url = {http://link.aps.org/doi/10.1103/PhysRevA.87.010701},

year  = {2013},

date = {2013-01-01},

journal = {Phys. Rev. A},

volume = {87},

pages = {010701},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Mikosch2013,

title = {Indirect Dynamics in a Highly Exoergic Substitution Reaction},

author = {Jochen Mikosch and Jiaxu Zhang and Sebastian Trippel and Christoph Eichhorn and Rico Otto and Rui Sun and Wibe A. Jong and Matthias Weidemüller and William L. Hase and Roland Wester},

url = {http://pubs.acs.org/doi/abs/10.1021/ja308042v},

issn = {0002-7863},

year  = {2013},

date = {2013-01-01},

booktitle = {Journal of the American Chemical Society},

journal = {J. Am. Chem. Soc.},

volume = {135},

number = {11},

pages = {4250--4259},

publisher = {American Chemical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Saint-Vincent2013,

title = {Spontaneous avalanche ionization of a strongly blockaded Rydberg 

 gas},

author = {M. Robert-de-Saint-Vincent and C. S. Hofmann and H. Schempp and G. Günter and S. Whitlock and M. Weidemüller},

url = {http://link.aps.org/doi/10.1103/PhysRevLett.110.045004},

year  = {2013},

date = {2013-01-01},

journal = {Phys. Rev. Lett.},

volume = {110},

pages = {045004},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Zurn2013,

title = {Pairing in few-fermion systems with attractive interactions},

author = {G. Zürn and N. Wenz and S. Murmann and A. Bergschneider and T. Lompe and S. Jochim},

doi = {10.1103/PhysRevLett.111.175302},

issn = {00319007},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

journal = {Physical Review Letters},

volume = {111},

number = {17},

pages = {36--38},

abstract = {We have studied quasi one-dimensional few-particle systems consisting of one to six ultracold fermionic atoms in two different spin states with attractive interactions. We probe the system by deforming the trapping potential and by observing the tunneling of particles out of the trap. For even particle numbers we observe a tunneling behavior which deviates from uncorrelated single-particle tunneling indicating the existence of pair correlations in the system. From the tunneling timescales of the systems we infer the single particle dissociation energies for different particle numbers which show a strong odd-even effect, similar to the one observed for neutron separation experiments in nuclei.},

note = {arXiv: 1307.5153},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Zurn2013a,

title = {Precise characterization of Li6 Feshbach resonances using trap-sideband-resolved RF spectroscopy of weakly bound molecules},

author = {G. Zürn and T. Lompe and N. Wenz and S. Jochim and P. S. Julienne and J. M. Hutson},

doi = {10.1103/PhysRevLett.110.135301},

issn = {00319007},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

journal = {Physical Review Letters},

volume = {110},

number = {13},

pages = {1--5},

abstract = {We have performed radio-frequency dissociation spectroscopy of weakly bound textasciicircum6Li_2 Feshbach molecules using low-density samples of about 30 molecules in an optical dipole trap. Combined with a high magnetic field stability this allows us to resolve the discrete trap levels in the RF dissociation spectra. This novel technique allows the binding energy of Feshbach molecules to be determined with unprecedented precision. We use these measurements as an input for a fit to the textasciicircum6Li scattering potential using coupled-channel calculations. From this new potential, we determine the pole positions of the broad textasciicircum6Li Feshbach resonances with an accuracy better than 7 textbackslashtimes 10textasciicircum-4 of the resonance widths. This eliminates the dominant uncertainty for current precision measurements of the equation of state of strongly interacting Fermi gases. For example, our results imply a corrected value for the Bertsch parameter textbackslashxi measured by Ku et al. [Science 335, 563 (2012)], which is textbackslashxi = 0.370(5)(8).},

note = {arXiv: 1211.1512v2},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Wenz2013,

title = {From Few to Many: Observing the Formation of a Fermi Sea One Atom at a Time},

author = {A. N. Wenz and G. Zürn and S. Murmann and I. Brouzos and T. Lompe and S. Jochim},

url = {http://www.sciencemag.org/content/342/6157/457%5Cnhttp://www.ncbi.nlm.nih.gov/pubmed/24159041},

doi = {10.1126/science.1240516},

issn = {0036-8075, 1095-9203},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

journal = {Science},

volume = {342},

number = {6157},

pages = {457--460},

abstract = {Knowing when a physical system has reached sufficient size for its macroscopic properties to be well described by many-body theory is difficult. We investigated the crossover from few- to many-body physics by studying quasi–one-dimensional systems of ultracold atoms consisting of a single impurity interacting with an increasing number of identical fermions. We measured the interaction energy of such a system as a function of the number of majority atoms for different strengths of the interparticle interaction. As we increased the number of majority atoms one by one, we observed fast convergence of the normalized interaction energy toward a many-body limit calculated for a single impurity immersed in a Fermi sea of majority particles.textbackslashnNot Very ManytextbackslashnIn physics, the behavior of a system sometimes becomes easier to grasp when the number of particles is large and statistics begin to matter, but knowing how large the system needs to be for that to happen is a challenging computational problem. Wenz et al. (p. 457) used a one-dimensional trapped gas of 6Li atoms to study this crossover from few to many. To simplify the problem, they worked with one “impurity” atom that was in a state unlike the other—“majority”—atoms. For weak and intermediate interactions, the system approached the many-body limit with as few as four majority atoms.},

note = {arXiv: 1307.3443v2 

ISBN: 9781597820738},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Deiglmayr2012,

title = {Reactive collisions of trapped anions with ultracold atoms},

author = {J. Deiglmayr and A. Göritz and T. Best and M. Weidemüller and R. Wester},

url = {http://link.aps.org/doi/10.1103/PhysRevA.86.043438},

doi = {10.1103/PhysRevA.86.043438},

year  = {2012},

date = {2012-10-01},

journal = {Phys. Rev. A},

volume = {86},

issue = {4},

pages = {043438},

publisher = {American Physical Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Zurn2012,

title = {Fermionization of two distinguishable fermions.},

author = {G Zürn and F Serwane and T Lompe and A N Wenz and M G Ries and J E Bohn and S Jochim},

url = {http://www.ncbi.nlm.nih.gov/pubmed/22401221},

doi = {10.1103/PhysRevLett.108.075303},

issn = {1079-7114},

year  = {2012},

date = {2012-02-01},

urldate = {2012-02-01},

journal = {Physical review letters},

volume = {108},

number = {7},

pages = {075303},

abstract = {We study a system of two distinguishable fermions in a 1D harmonic potential. This system has the exceptional property that there is an analytic solution for arbitrary values of the interparticle interaction. We tune the interaction strength and compare the measured properties of the system to the theoretical prediction. For diverging interaction strength, the energy and square modulus of the wave function for two distinguishable particles are the same as for a system of two noninteracting identical fermions. This is referred to as fermionization. We have observed this phenomenon by directly comparing two distinguishable fermions with diverging interaction strength with two identical fermions in the same potential. We observe good agreement between experiment and theory. By adding more particles our system can be used as a quantum simulator for more complex systems where no theoretical solution is available.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Giese2012,

title = {Formation and relaxation of RbHe exciplexes on He nanodroplets studied 

 by femtosecond pump and picosecond probe spectroscopy},

author = {C. Giese and T. Mullins and B. Grüner and M. Weidemüller and F. Stienkemeier and M. Mudrich},

url = {http://link.aip.org/link/doi/10.1063/1.4772749},

year  = {2012},

date = {2012-01-01},

journal = {Journal Chem. Phys.},

volume = {137},

issue = {24},

pages = {244307},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gotz2012,

title = {Versatile cold atom target apparatus},

author = {Simone Götz and Bastian Höltkemeier and Christoph S. Hofmann and Dominic Litsch and Brett D. DePaola and Matthias Weidemüller},

url = {http://link.aip.org/link/?RSI/83/073112/1},

doi = {10.1063/1.4738643},

year  = {2012},

date = {2012-01-01},

journal = {Review of Scientific Instruments},

volume = {83},

number = {7},

pages = {073112},

publisher = {AIP},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gunter2012,

title = {Interaction enhanced imaging of individual atoms embedded in dense 

 atomic gases},

author = {G. Günter and M. Robert-de-Saint-Vincent and H. Schempp and C. S. Hofmann and S. Whitlock and M. Weidemüller},

url = {http://link.aps.org/doi/10.1103/PhysRevLett.108.013002},

doi = {10.1103/PhysRevLett.108.013002},

year  = {2012},

date = {2012-01-01},

journal = {Phys. Rev. Lett},

volume = {108},

issue = {1},

pages = {013002},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pfaff2012,

title = {A stand-alone interactive physics showcase},

author = {D. Pfaff and A. Hagelgans and K. Bretzer and M. Weidemüller},

year  = {2012},

date = {2012-01-01},

journal = {The Physics Teacher},

volume = {50},

issue = {4},

pages = {235},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ulmanis2012,

title = {Ultracold Molecules Formed by Photoassociation: Heteronuclear Dimers, 

 Inelastic Collisions, and Interactions with Ultrashort Laser Pulses},

author = {J. Ulmanis and J. Deiglmayr and M. Repp and R. Wester and M. Weidemüller},

url = {http://pubs.acs.org/articlesonrequest/AOR-eJmuYCgEibyJXppwM8Zb},

doi = {10.1021/cr300215h},

year  = {2012},

date = {2012-01-01},

journal = {Chemical Reviews},

volume = {112},

number = {9},

pages = {4890},

keywords = {},

pubstate = {published},

tppubtype = {article}

}