Publications

Isotopologue-selective laser cooling of molecules
F. Kogel*, T. Garg*, M. Rockenhäuser, S. A. Morales-Ramírez, and T. Langen
arxiv: 2406.01569 (2024)

Laser cooling of barium monofluoride molecules using synthesized optical spectra
M. Rockenhäuser*, F. Kogel*, T. Garg, S. A. Morales-Ramírez, and T. Langen
Phys. Rev. Research  6, 043161 (2024), arxiv:2405.09427 (2024)

Quantum state manipulation and cooling of ultracold molecules
T. Langen, G. Valtolina, D. Wang, and J. Ye
Nature Physics 20, 702 (2024), arxiv:2305.13445

Self-organization in the avalanche, quench and dissipation of a molecular ultracold plasma
K. Marroquin, R. Wang, A. Allahverdian, N. Durand-Brousseau, S. Colombini, F. Kogel, J. Keller, T. Langen, and E. Grant
Journal of Plasma Physics 90, 935900101 (2024)

Absorption spectroscopy for laser cooling and high-fidelity detection of barium monofluoride molecules
M. Rockenhäuser*, F. Kogel*, E. Pultinevicius, and T. Langen
Phys. Rev. A 108, 062812 (2023), arxiv:2307.08312

A scalable scanning transfer cavity laser stabilization scheme based on the Red Pitaya STEMlab platform
E. Pultinevicius, M. Rockenhäuser, F. Kogel, P. Groß, T. Garg, O.E. Prochnow, and T. Langen
Rev. Sci. Instrum. 94, 103004 (2023), arxiv:2307.10217
see also GitHub Repository

Microscopic 3D printed optical tweezers for atomic quantum technology
P. Ruchka, S. Hammer, M. Rockenhäuser, R. Albrecht, J. Drozella, S. Thiele, H. Giessen, and T. Langen
Quantum Sci. Technol. 7, 045011 (2022), arXiv:2206.11090

Self-bound dipolar droplets and supersolids in molecular Bose-Einstein condensates
M. Schmidt, L. Lassablière, G. Quéméner and T. Langen
Phys. Rev. Research 4, 013235 (2022), arxiv:2111.06187

Dipolar supersolids: Solid and superfluid at the same time
T. Langen
Physics Today 75, 3, 36 (2022)

Topological quantum critical points in the extended Bose-Hubbard model
J. Fraxanet, D. Gonzalez-Cuadra, T. Pfau, M. Lewenstein, T. Langen, and L. Barbiero
Phys. Rev. Lett. 128, 043402 (2022), arxiv:2106.15457
see also Press release

Supersolidity in Two-Dimensional Trapped Dipolar Droplet Arrays
J. Hertkorn, J.-N. Schmidt, M. Guo, F. Böttcher, K.S.H. Ng, S.D. Graham, P. Uerlings,
H.P. Büchler, T. Langen, M. Zwierlein, and T. Pfau
Phys. Rev. Lett. 127, 155301 (2021), arxiv:2103.09752

A laser cooling scheme for precision measurements using fermionic barium monofluoride (137Ba19F) molecules
F. Kogel, M. Rockenhäuser, R. Albrecht, and T. Langen
New J. Phys. 23, 095003 (2021), arxiv:2106.13177

Pattern Formation in Quantum Ferrofluids: from Supersolids to Superglasses
J. Hertkorn, J.-N. Schmidt, M. Guo, F. Böttcher, K. Ng, S. Graham, P. Uerlings, T. Langen,
M. Zwierlein, and T. Pfau
Phys. Rev. Research 3, 033125 (2021), arxiv:2103.13930

Roton Excitations in an Oblate Dipolar Quantum Gas
J.-N. Schmidt, J. Hertkorn, M. Guo, F. Böttcher, M. Schmidt, K. Ng, S.D. Graham,
T. Langen, M. Zwierlein, and T. Pfau
Phys. Rev. Lett. 126, 193002 (2021), arxiv:2102.01461
see also PRL cover

Density Fluctuations across the Superfluid-Supersolid Phase Transition in a Dipolar Quantum Gas
J. Hertkorn, J.-N. Schmidt, F. Böttcher, M. Guo, M. Schmidt, K.S.H. Ng, S.D. Graham,
H.P. Büchler, T. Langen, M. Zwierlein, and T. Pfau
Phys. Rev. X 11, 011037 (2021), arxiv:2009.08910

New states of matter with fine-tuned interactions: quantum droplets and dipolar supersolids
F. Boettcher, J.-N. Schmidt, J. Hertkorn, K. Ng, S. D. Graham, M. Guo, T. Langen, and T. Pfau
Rep. Prog. Phys. 84 012403 (2021), arxiv:2007.06391

Beyond the Limits of Conventional Stark Deceleration
D. Reens, H. Wu, A. Aeppli, A. McAuliffe, P. Wcislo, T. Langen, and J. Ye
Phys. Rev. Research 2, 033095 (2020), arxiv:2004.01856

Buffer-gas cooling, high-resolution spectroscopy, and optical cycling of barium monofluoride molecules
R. Albrecht, M. Scharwaechter, T. Sixt, L. Hofer, and T. Langen
Phys. Rev. A 101, 013413 (2020), arxiv:1906.08798

Dilute dipolar quantum droplets beyond the extended Gross-Pitaevskii equation
F. Böttcher, M. Wenzel, J.-N. Schmidt, M. Guo, T. Langen, I. Ferrier-Barbut, T. Pfau, R. Bombin, J. Sanchez-Baena, J. Boronat, and F. Mazzanti
Phys. Rev. Research 1, 033088 (2019), arxiv:1904.10349

Fate of the Amplitude Mode in a Trapped Dipolar Supersolid
J. Hertkorn, F. Böttcher, M. Guo, J.-N. Schmidt, T. Langen, H. P. Büchler, and T. Pfau
Phys. Rev. Lett. 123, 193002 (2019), arxiv:1907.09315

The low-energy Goldstone mode in a trapped dipolar supersolid
M. Guo, F. Böttcher, J. Hertkorn, J.-N. Schmidt, M. Wenzel, H.P. Büchler, T. Langen, and T. Pfau
Nature 574, 386–389 (2019), arxiv:1906.04633
see also Press release, Pressemitteilung, Nature News & Views, Nature Physics Research Highlights, Welt der Physik, Deutschlandfunk, Clixoom, Forschung und Wissen

Optimal control of the self-bound dipolar droplet formation process
J.-F. Mennemann, T. Langen, L. Exl, and N. J. Mauser
Comput. Phys. Commun. 244, 205 (2019), arxiv:1905.12546

Transient supersolid properties in an array of dipolar quantum droplets
F. Böttcher, J.-N. Schmidt, M. Wenzel, J. Hertkorn, M. Guo, T. Langen, and T. Pfau
Phys. Rev. X 9, 011051 (2019), arxiv:1901.07982
see also APS Physics Highlights 2019, PRX 10th Anniversary Highlight, Nature News & Views, Physics Viewpoint, Physik Journal, Physics World

Ultrakalt Magnetisiert
T. Langen and Manfred J. Mark
Physik Journal 17, 35 (2018)

Anisotropic Superfluid Behavior of a Dipolar Bose-Einstein Condensate
M. Wenzel, F. Böttcher, J.-N. Schmidt, M. Eisenmann, T. Langen, T. Pfau, and I. Ferrier-Barbut
Phys. Rev. Lett. 121, 030401 (2018), arxiv:1804.04552

Enhancing radical molecular beams by skimmer cooling
H. Wu, D. Reens, T. Langen, Y. Shagam, D. Fontecha, and J. Ye
Phys. Chem. Chem. Phys. 20, 11615 (2018), arxiv:1802.10179

Scissors mode of dipolar quantum droplets
I. Ferrier-Barbut, M. Wenzel, F. Böttcher, T. Langen, M. Isoard, S. Stringari, and T. Pfau
Phys. Rev. Lett. 120, 160402 (2018), arxiv:1712.06927
see also Physics Today

Double light-cone dynamics establish thermal states in integrable 1D Bose gases
T. Langen, T. Schweigler, E. Demler, and J. Schmiedmayer
New J. Phys. 20, 023034 (2018), arxiv:1709.05994

Controlling spin flips of molecules in an electromagnetic trap
D.L. Reens, H. Wu, T. Langen, and J. Ye
Phys. Rev. A 96, 063420 (2017), arxiv:1706.02806

Striped states in a many-body system of tilted dipoles
M. Wenzel, F. Böttcher, T. Langen, I. Ferrier-Barbut, and T. Pfau
Phys. Rev. A 96, 053630 (2017), arxiv:1706.09388

Experimental characterization of a quantum many-body system via higher-order correlations
T. Schweigler, V. Kasper, S. Erne, I. Mazets, B. Rauer, F. Cataldini, T. Langen,
T. Gasenzer, J. Berges, and J. Schmiedmayer
Nature 545, 323–326 (2017), arxiv:1505.03126
see also Nature Physics News & Views, Press release (english/deutsch)

Quenches, Relaxation, and Prethermalization in an Isolated Quantum System
T. Langen and J. Schmiedmayer
in Universal Themes of Bose-Einstein Condensation, Cambridge University Press (2017)

Does an isolated quantum system relax?
B. Rauer, T. Schweigler, T. Langen, and J. Schmiedmayer
Proc. Int. School Phys. Enrico Fermi 191, 485 (2016), arxiv:1504.04288

Prethermalization and universal dynamics in near-integrable quantum systems
T. Langen, T. Gasenzer, and J. Schmiedmayer
J. Stat. Mech. 064009 (2016), arxiv:1603.09385

Dissipative cooling of degenerate Bose gases
P. Grišins, B. Rauer, T. Langen, J. Schmiedmayer, and I. Mazets
Phys. Rev. A 93, 033634 (2016), arxiv:1411.4946

Cooling of a one-dimensional Bose gas
B. Rauer, P. Grišins, I.E. Mazets, T. Schweigler, W. Rohringer, R. Geiger, T. Langen, and J. Schmiedmayer

Phys. Rev. Lett. 116, 030402 (2016), arxiv:1505.04747
see also Press release (english/deutsch), der Standard

Optimal control of Bose-Einstein condensates in three dimensions
J.F. Mennemann, D. Matthes, R.M. Weishäupl, and T. Langen
New J. Phys. 17, 113027 (2015), arxiv:1507.07319
see also Video summary

Towards experimental quantum field tomography with ultracold atoms
A. Steffens, M. Friesdorf, T. Langen, B. Rauer, T. Schweigler, R. Hübener,
J. Schmiedmayer, C. A. Riofrio, and J. Eisert
Nature Communications 6, 7663 (2015), arxiv:1406.3632
see also Press release (english/deutsch), ORF, die Presse

Experimental observation of a generalized Gibbs ensemble
T. Langen, S. Erne, R. Geiger, B. Rauer, T. Schweigler, M. Kuhnert, W. Rohringer,
I. E. Mazets, T. Gasenzer, and J. Schmiedmayer
Science 348, 207 (2015), arXiv:1411.7185
see also Science Perspective, Press release (english/deutsch), ORF, die Presse, APA Meldung, openscienceworld

Ultracold atoms out of equilibrium
T. Langen, R. Geiger, and J. Schmiedmayer
Annu. Rev. Cond. Mat. Phys. 6, 201 (2015), arxiv:1408.6377

Studying non-equilibrium many-body dynamics using one-dimensional Bose gases
T. Langen, M. Gring, M. Kuhnert, B. Rauer, R. Geiger, I. Mazets, D. Adu Smith, T. Kitagawa, E. Demler, and J. Schmiedmayer
AIP Conf. Proc. 1633, 11 (2014)

Interferometry with Atoms
J. F. Schaff, T. Langen, and J. Schmiedmayer
Proc. Internat. School Phys. Enrico Fermi, 188, 1 (2014), arxiv:1504.04285
also published as Riv. Nuovo Cimento 34, 509 (2014)

Chiral prethermalization in supersonically split condensates
K. Agarwal, E. G. Dalla Torre, B. Rauer, T. Langen, J. Schmiedmayer, and E. Demler
Phys. Rev. Lett. 113, 190401 (2014), arxiv:1402.6716

Local relaxation and light-cone-like propagation of correlations in a trapped 1D Bose gas
R. Geiger, T. Langen, I. Mazets, and J. Schmiedmayer
New J. Phys. 16, 053034 (2014), arXiv:1312.7568

Comment on ‘‘Probing phase fluctuations in a 2D degenerate Bose gas by free expansion’’
T. Langen
Phys. Rev. Lett. 111, 159601 (2013)
see also Choi et al., PRL 109, 125301 (2012) and PRL 111, 159602 (2013)

Local emergence of thermal correlations in an isolated quantum many-body system
T. Langen, R. Geiger, M. Kuhnert, B. Rauer, and J. Schmiedmayer
Nature Physics 9, 640–643 (2013), arxiv:1305.3708
see also Nature Physics News & Views, Press release (english/deutsch), Physics Today, APA Meldung, die Presse

Prethermalization revealed by the relaxation dynamics of full distribution functions
D. Adu Smith, M. Gring, T. Langen, M. Kuhnert, B. Rauer, R. Geiger, T. Kitagawa, I. Mazets,
E. Demler, and J. Schmiedmayer
New J. Phys. 15, 075011 (2013), arXiv:1212.4645

Lifetime of the Bose gas with resonant interactions
B. S. Rem, A. T. Grier, I. Ferrier-Barbut, U. Eismann, T. Langen, N. Navon, L. Khaykovich, F. Werner, D. S. Petrov, F. Chevy, and C. Salomon
Phys. Rev. Lett. 110, 163202 (2013), arXiv:1212.5274

Prethermalization in one-dimensional Bose gases: description by a stochastic Ornstein-Uhlenbeck process
T. Langen, M. Gring, M. Kuhnert, B. Rauer, R. Geiger, D. Adu Smith, I. E. Mazets, and J. Schmiedmayer
Eur. Phys. J. Special Topics 217, 43 (2013), arXiv:1211.0016

Multimode dynamics and emergence of a characteristic length-scale in a one-dimensional quantum system
M. Kuhnert, R. Geiger, T. Langen, M. Gring, B. Rauer, T. Kitagawa, E. Demler, D. Adu Smith, and J. Schmiedmayer
Phys. Rev. Lett. 110, 090405 (2013), arXiv:1211.5323
see also Press release (english/deutsch)

Relaxation and prethermalization in an isolated quantum system
M. Gring, M. Kuhnert, T. Langen, T. Kitagawa, B. Rauer, M. Schreitl, I. Mazets, D. Adu Smith,
E. Demler, and J. Schmiedmayer
Science 337, 1318 (2012), arXiv:1112.0013
see also derStandard – Best of Wissenschaft 2012, Press release (english,deutsch)

Experimental demonstration of single-site addressability in a two-dimensional optical lattice
P. Würtz, T. Langen, T. Gericke, A. Koglbauer, and H. Ott
Phys. Rev. Lett. 103, 080404 (2009), arXiv:0903.4837

see also PRL cover, Nature Photonics Research Highlights, Physicsworld, Physics Synopsis

Probing Bose-Einstein condensates by electron impact ionization
P. Würtz, T. Gericke, T. Langen, A. Koglbauer, and H. Ott
Journal of Physics: Conf. Ser. 141, 012020 (2008)