Top Publications of the Nanoengineering Group

B. Meyer-Hoppe, F. Anders, P. Feldmann, L. Santos, C. Klempt (2023): Excited-state phase diagram of a ferromagnetic quantum gas,  Phys. Rev. Lett. 131, 243402
DOI: https://doi.org/10.1103/PhysRevLett.131.243402
arXiv: 2301.10655

Bernd Meyer-Hoppe, Maximilian Baron, Christophe Cassens, Fabian Anders, Alexander Idel, Jan Peise, Carsten Klempt (2023): Dynamical low-noise microwave source for cold-atom experiments,  Rev Sci Instrum 94, 074705 (2023)
DOI: https://doi.org/10.1063/5.0160367
arXiv: https://arxiv.org/abs/2003.10989

C. Pür, M. Hetzel, M. Quensen, A. Hüper, J. Geng, J. Kruse, W. Ertmer, C. Klempt (2023): Rapid generation and number-resolved detection of spinor Rubidium Bose-Einstein condensates,  Phys. Rev. A 107, 033303
DOI: https://doi.org/10.1103/PhysRevA.107.033303
arXiv: arXiv:2301.08172

Mareike Hetzel, Luca Pezzè, Cebrail Pür, Martin Quensen, Andreas Hüper, Jiao Geng, Jens Kruse, Luis Santos, Wolfgang Ertmer, Augusto Smerzi, and Carsten Klempt (2023): Tomography of a Number-Resolving Detector by Reconstruction of an Atomic Many-Body Quantum State,  Phys. Rev. Lett. 131, 260601
DOI: https://doi.org/10.1103/PhysRevLett.131.260601
arXiv: https://arxiv.org/abs/2207.01270

M. Hetzel, L. Pezzè, C. Pür, M. Quensen, A. Hüper, J. Geng, J. Kruse, L. Santos, W. Ertmer, A. Smerzi, C. Klempt (2022): Tomography of a number-resolving detector by reconstruction of an atomic many-body quantum state,  arXiv:2207.01270 (2022).
DOI: 10.48550/arXiv.2207.01270
arXiv: 2207.01270

A. Hüper, C. Pür, M. Hetzel, J. Geng, J. Peise, I. Kruse, M. Kristensen, W. Ertmer, J. Arlt, C. Klempt (2021): Number-resolved preparation of mesoscopic atomic ensembles,  New J. Phys. 23, 113046 (2021).
DOI: 10.1088/1367-2630/abd058
arXiv: 1912.05689

F. Anders, A. Idel, P. Feldmann, D. Bondarenko, S. Loriani, K. Lange, J. Peise, M. Gersemann, B. Meyer, S. Abend, C. Schubert, D. Schlippert, L. Santos, E. Rasel, C. Klempt (2021): Momentum Entanglement for Atom Interferometry,  Phys. Rev. Lett. 127, 140402 (2021)
DOI: 10.1103/PhysRevLett.127.140402
arXiv: 2010.15796

G. Vitagliano, M. Fadel, I. Apellaniz, M. Kleinmann, B. Lücke, C. Klempt, G. Tóth (2021): Detecting Einstein-Podolsky-Rosen steering and bipartite entanglement in split Dicke states,  arXiv:2104.05663 (2021)
arXiv: 2104.05663

P. Feldmann, C. Klempt, A. Smerzi, L. Santos, M. Gessner (2021): Interferometric Order Parameter for Excited-State Quantum Phase Transitions in Bose-Einstein Condensates,  Phys. Rev. Lett. 126, 230602 (2021).
DOI: 10.1103/PhysRevLett.126.230602
arXiv: 2011.02823

A. Chu, J. Will, J. Arlt, C. Klempt, A.-M. Rey (2020): Simulation of XXZ Spin Models using Sideband Transitions in Trapped Bosonic Gases,  Phys. Rev. Lett. 125, 240504 (2020). More info
DOI: 10.1103/PhysRevLett.125.240504
arXiv: 2004.01282

B. Canuel, S. Abend, P. Amaro-Seoane, F. Badaracco, Q. Beaufils, A. Bertoldi, K. Bongs, P. Bouyer, C. Braxmaier, W. Chaibi, N. Christensen, F. Fitzek, G. Flouris, N. Gaaloul, S. Gaffet, C. L. Garrido Alzar, R. Geiger, S. Guellati-Khelifa, K. Hammerer, J. Harms, J. Hinderer, M. Holynski, J. Junca, S. Katsanevas, C. Klempt, C. Kozanitis, M. Krutzik, A. Landragin, I. Làzaro Roche, B. Leykauf, Y.-H. Lien, S. Loriani, S. Merlet, M. Merzougui, M. Nofrarias, P. Papadakos, F. Pereira dos Santos, A. Peters, D. Plexousakis, M. Prevedelli, E. M. Rasel, Y. Rogister, S. Rosat, A. Roura, D. O. Sabulsky, V. Schkolnik, D. Schlippert, C. Schubert, L. Sidorenkov, J.-N. Siemß, C. F. Sopuerta, F. Sorrentino, C. Struckmann, G. M. Tino, G. Tsagkatakis, A. Viceré, W. von Klitzing, L. Woerner, and X. Zou (2020): Technologies for the ELGAR large scale atom interferometer array
arXiv: 2007.04014

B. Meyer, A. Idel, F. Anders, J. Peise, C. Klempt (2020): Dynamical low-noise microwave source for cold atom experiments,  arXiv:2003.10989 (2020).
arXiv: 2003.10989

Christian Lisdat and Carsten Klempt (2020): Quantum engineering for optical clocks,  Nature 588, 397-398 (2020).
DOI: 10.1038/d41586-020-03510-y

B. Canuel, S. Abend, P. Amaro-Seoane, F. Badaracco, Q. Beaufils, A. Bertoldi, K. Bongs, P. Bouyer, C. Braxmaier, W. Chaibi, N. Christensen, F. Fitzek, G. Flouris, N. Gaaloul, S. Gaffet, C. L. Garrido Alzar, R. Geiger, S. Guellati-Khelifa, K. Hammerer, J. Harms, J. Hinderer, J. Junca, S. Katsanevas, C. Klempt, C. Kozanitis, M. Krutzik, A. Landragin, I. Làzaro Roche, B. Leykauf, Y.-H. Lien, S. Loriani, S. Merlet, M. Merzougui, M. Nofrarias, P. Papadakos, F. Pereira, A. Peters, D. Plexousakis, M. Prevedelli, E. Rasel, Y. Rogister, S. Rosat, A. Roura, D. O. Sabulsky, V. Schkolnik, D. Schlippert, C. Schubert, L. Sidorenkov, J.-N. Siemß, C. F. Sopuerta, F. Sorrentino, C. Struckmann, G. M. Tino, G. Tsagkatakis, A. Viceré, W. von Klitzing, L. Woerner, and X. Zou (2019): ELGAR -- a European Laboratory for Gravitation and Atom-interferometric Research,  Class. Quantum Grav. 37, 225017
DOI: 10.1088/1361-6382/aba80e
arXiv: 1911.03701

G. M. Tino, A. Bassi, G. Bianco, K. Bongs, P. Bouyer, L. Cacciapuoti, S. Capozziello, X. Chen, M. L. Chiofalo, A. Derevianko, W. Ertmer, N. Gaaloul, P. Gill, P. W. Graham, J. M. Hogan, L. Iess, M. A. Kasevich, H. Katori, C. Klempt, X. Lu, L.-S. Ma, H. Müller, N. R. Newbury, C. Oates, A. Peters, N. Poli, E. Rasel, G. Rosi, A. Roura, C. Salomon, S. Schiller, W. Schleich, D. Schlippert, F. Schreck, C. Schubert, F. Sorrentino, U. Sterr, J. W. Thomsen, G. Vallone, F. Vetrano, P. Villoresi, W. von Klitzing, D. Wilkowski, P. Wolf, J. Ye, N. Yu, and M. S. Zhan (2019): SAGE: A Proposal for a Space Atomic Gravity Explorer,  Eur. Phys. J. D 73, 228
DOI: 10.1140/epjd/e2019-100324-6
arXiv: 1907.03867

L. Pezzé, M. Gessner, P. Feldmann, C. Klempt, L. Santos, A. Smerzi (2019): Heralded Generation of Macroscopic Superposition States in a Spinor Bose-Einstein Condensate,  Phys. Rev. Lett. 123, 260403 (2019).
DOI: 10.1103/PhysRevLett.123.260403
arXiv: 1712.03864

M. A. Kristensen, M. B. Christensen, M. Gajdacz, M. Iglicki, K. Pawłowski, C. Klempt, J. F. Sherson, K. Rzążewski, A. J. Hilliard, and J. J. Arlt (2019): Observation of Atom Number Fluctuations in a Bose-Einstein Condensate,  Phys. Rev. Lett. 122, 163601 (2019).
DOI: 10.1103/PhysRevLett.122.163601
arXiv: arXiv:1812.03064v1

F. Anders, L. Pezzè, A. Smerzi, C. Klempt (2018): Phase magnification by two-axis counter-twisting for detection noise robust interferometry,  Phys. Rev. A 97, 043813 (2018).
DOI: 10.1103/PhysRevA.97.043813
arXiv: 1711.02658

K. Lange, J. Peise, B. Lücke, I.Kruse, G. Vitagliano, I. Apellaniz, M. Kleinmann, G. Toth, C. Klempt (2018): Entanglement between two spatially separated atomic modes,  Science 360, 416 (2018).
DOI: 10.1126/science.aao2035
arXiv: 1708.02480

K. Lange, J. Peise, B. Lücke, T. Gruber, A. Sala, A. Polls, W. Ertmer, B. Juliá-Díaz, L. Santos, C. Klempt (2018): Creation of entangled atomic states by an analogue of the Dynamical Casimir Effect,  New J. Phys. 20, 103017 (2018).
DOI: 10.1088/1367-2630/aae116
arXiv: 1805.02560

P. Feldmann, M. Gessner, M. Gabbrielli, C. Klempt, L. Santos, L. Pezzè, A. Smerzi (2018): Interferometric sensitivity and entanglement by scanning through quantum phase transitions in spinor Bose-Einstein condensates,  Phys. Rev. A 97, 032339 (2018).
DOI: 10.1103/PhysRevA.97.032339
arXiv: 1712.03896

G. Vitagliano, I. Apellaniz, M. Kleinmann, B. Lücke, C. Klempt, G. Tòth (2017): Entanglement and extreme spin squeezing of unpolarized states,  New J. Phys. 19, 013027 (2017)
DOI: 10.1088/1367-2630/19/1/013027
arXiv: 1605.07202

M. Kristensen, M. Gajdacz, P. Pedersen, C. Klempt, J. F. Sherson, J. J. Arlt, A. J. Hilliard (2017): Sub-atom shot noise Faraday imaging of ultracold atom clouds,  J. Phys. B: At. Mol. Opt. Phys. 50, 034004 (2017).
DOI: 10.1088/1361-6455/50/3/034004
arXiv: 1608.06814

I. Kruse, K. Lange, J. Peise, B. Lücke, L. Pezzè, J. Arlt, W. Ertmer, C. Lisdat, L. Santos, A. Smerzi, C. Klempt (2016): Improvement of an Atomic Clock using Squeezed Vacuum,  Phys. Rev. Lett. 117, 143004 (2016).
DOI: 10.1103/PhysRevLett.117.143004
arXiv: 1605.07754

M. Gajdacz, A. J. Hilliard, M. A. Kristensen, P. L. Pedersen, C. Klempt, J. J. Arlt, J. F. Sherson (2016): Preparation of ultracold atom clouds at the shot noise level,  Phys. Rev. Lett. 117, 073604 (2016).
DOI: 10.1103/PhysRevLett.117.073604
arXiv: 1604.05087

I. Apellaniz, B. Lücke, J. Peise, C. Klempt, G. Tóth (2015): Verifying the metrological usefulness of Dicke states with collective measurements,  New J. Phys. 17, 083027 (2015).
DOI: 10.1088/1367-2630/17/8/083027
arXiv: 1412.3426

J. Mahnke, I. Kruse, A. Hüper, S. Jöllenbeck, W. Ertmer, J. Arlt, C. Klempt (2015): A continuously pumped reservoir of ultracold atoms,  J. Phys. B: At. Mol. Opt. Phys. 48, 165301 (2015).
DOI: 10.1088/0953-4075/48/16/165301
arXiv: 1506.06565

J. Peise, B. Lücke, L. Pezzé, F. Deuretzbacher, W. Ertmer, J. Arlt, A. Smerzi, L. Santos, and C. Klempt (2015): Interaction-free measurements by quantum Zeno stabilization of ultracold atoms,  Nature Communications 6, 6811 (2015)
DOI: 10.1038/ncomms7811
arXiv: 1511.07636v1

J. Peise, I. Kruse, K. Lange, B. Lücke, L. Pezzè, J. Arlt, W. Ertmer, K. Hammerer, L. Santos, A. Smerzi, and C. Klempt (2015): Satisfying the Einstein–Podolsky–Rosen criterion with massive particles,  Nature Communications 6, 8984 (2015).
DOI: 10.1038/ncomms9984
arXiv: 1511.08704

J. Tura, R. Augusiak, A. B. Sainz, B. Lücke, C. Klempt, M. Lewenstein, A. Acín (2015): Nonlocality in many-body quantum systems detected with two-body correlators,  Annals of Physics 362, 370 (2015).
DOI: 10.1016/j.aop.2015.07.021
arXiv: 1505.06740

L. Wacker, N. B. Jørgensen, D. Birkmose, R. Horchani, W. Ertmer, C. Klempt, N. Winter, J. Sherson, J.J. Arlt (2015): Tunable dual-species Bose-Einstein condensates of K-39 and Rb-87,  Phys. Rev. A 92, 053602 (2015).
DOI: 10.1103/PhysRevA.92.053602
arXiv: 1505.07975

B. Lücke, J. Peise, G. Vitagliano, J. Arlt, L. Santos, G. Tóth, C. Klempt (2014): Detecting multiparticle entanglement of Dicke states,  Phys. Rev. Lett. 112, 155304 (2014).
DOI: 10.1103/PhysRevLett.112.155304
arXiv: 1403.4542

P. Pedersen, M. Gajdacz, F. Deuretzbacher, L. Santos, C. Klempt, J. Sherson, A. Hilliard, and J. Arlt (2014): Spin dynamics in a two-dimensional quantum gas,  Phys. Rev. A 89, 051603(R)
DOI: 10.1103/PhysRevA.89.051603
arXiv: 1404.7385

B. Lücke, L. Santos und C. Klempt (2013): Optik mit verschränkten Atomen,  Physik Journal 10, 37 (2013) More info

D. Stoevesandt, C. Klempt, R. Scheubel, W. Herr, S. Hettwer, K. Werdan, R. Silber, T. Kraya, O. Thews, A. Schlitt (2013): Embolic events caused by aortic thrombi - an underestimated entity?,  Journal of Thrombosis and Thrombolysis 35, 223 (2013)
DOI: 10.1007/s11239-012-0775-x

I. Geisel, K. Cordes, J. Mahnke, S. Jöllenbeck, J. Ostermann, J. Arlt, W. Ertmer, and C. Klempt (2013): Evolutionary optimization of an experimental apparatus,  Appl. Phys. Lett. 102, 214105 (2013)
DOI: 10.1063/1.4808213
arXiv: 1305.4094

J. Mahnke, S. Kulas, I. Geisel, S. Jöllenbeck, W. Ertmer, C. Klempt (2013): Microwave sidebands for laser cooling by direct modulation of a tapered amplifier,  Rev. Sci. Instrum. 84, 063110 (2013)
DOI: 10.1063/1.4811196
arXiv: 1306.0402

M. Scherer, B. Lücke, O. Topic, G. Gebreyesus, F. Deuretzbacher, W. Ertmer, L. Santos, C. Klempt, J.J. Arlt (2013): Spontaneous symmetry breaking in spinor Bose-Einstein condensates,  Phys. Rev. A 88, 053624 (2013)
DOI: 10.1103/PhysRevA.88.053624
arXiv: 1309.0424

B. Lücke, M. Scherer, J. Kruse, L. Pezzé, F. Deuretzbacher, P. Hyllus, O. Topic, J. Peise, W. Ertmer, J. Arlt, L. Santos, A. Smerzi, C. Klempt (2011): Twin matter waves for interferometry beyond the classical limit,  Science 334, 773 (2011).
DOI: 10.1126/science.1208798
arXiv: 1204.4102

K. Cordes, O. Topic, M. Scherer, C. Klempt, B. Rosenhahn, J. Ostermann (2011): Classification of Atomic Density Distributions using Scale Invariant Blob Localization,  Lecture Notes in Computer Science 6753, 161 (2011)
DOI: 10.1007/978-3-642-21593-3_17

M. Colomé-Tatché, C. Klempt, L. Santos, T. Vekua (2011): Adiabatic spin cooling using high-spin Fermi gases,  New J. Phys. 13, 113021 (2011)
DOI: 10.1088/1367-2630/13/11/113021
arXiv: 1009.2606

S. Jöllenbeck, J. Mahnke, R. Randoll, W. Ertmer, J. Arlt, C. Klempt (2011): A hexapole-compensated magneto-optical trap on a mesoscopic atom chip,  Phys. Rev. A 83, 043406 (2011) More info
DOI: 10.1103/PhysRevA.83.043406
arXiv: 1012.4321

C. Klempt, O. Topic, G. Gebreyesus, M. Scherer, T. Henninger, P. Hyllus, W. Ertmer, L. Santos, and J. Arlt (2010): Parametric amplification of vacuum fluctuations in a spinor condensate,  Phys. Rev. Lett. 104, 195303 (2010)
DOI: 10.1103/PhysRevLett.104.195303
arXiv: 0907.3413

F. Deuretzbacher, G. Gebreyesus, O. Topic, M. Scherer, B. Lücke, W. Ertmer, J. Arlt, C. Klempt, and L. Santos (2010): Parametric amplification of matter waves in dipolar spinor Bose-Einstein condensates,  Phys. Rev. A 82, 053608 (2010) More info
DOI: 10.1103/PhysRevA.82.053608
arXiv: 1005.2011

G. Kleine Büning, J. Will, W. Ertmer, C. Klempt, J. Arlt (2010): A slow gravity compensated Atom Laser,  Appl. Phys. B 100, 117 (2010). More info
DOI: 10.1007/s00340-010-4078-7
arXiv: 1005.3964

M. Scherer, B. Lücke, G. Gebreyesus, O. Topic, F. Deuretzbacher, W. Ertmer, L. Santos, J. J. Arlt and C. Klempt (2010): Spontaneous breaking of spatial and spin symmetry in spinor condensates,  Phys. Rev. Lett. 105, 135302 (2010). More info
DOI: 10.1103/PhysRevLett.105.135302
arXiv: 1007.2342

O. Topic, G. Gebreyesus, M. Scherer, T. Henninger, P. Hyllus, C. Klempt, W. Ertmer, L. Santos, and J. J. Arlt (2010): Resonant Amplification of Quantum Fluctuations in a Spinor Gas,  Las. Phys. 20, 1156-1162 (2010).
DOI: 10.1134/S1054660X10090422

C. Klempt, O. Topic, G. Gebreyesus, M. Scherer, T. Henninger, P. Hyllus, W. Ertmer, L. Santos, and J. Arlt (2009): Multi-resonant spinor dynamics in a Bose-Einstein condensate,  Phys. Rev. Lett. 103, 195302 (2009)
DOI: 10.1103/PhysRevLett.103.195302
arXiv: 0902.2058

C. Klempt, T. Henninger, O. Topic, J. Will, St. Falke, W. Ertmer, and J. Arlt (2008): Transport of a quantum degenerate heteronuclear Bose-Fermi mixture in a harmonic trap,  Eur. Phys. J. D 48, 121 (2008) More info
DOI: 10.1140/epjd/e2008-00067-5
arXiv: 0708.2845

C. Klempt, T. Henninger, O. Topic, M. Scherer, L. Kattner, E. Tiemann, W. Ertmer, and J. J. Arlt (2008): Radio-frequency association of heteronuclear Feshbach molecules,  Phys. Rev. A 78, 061602(R) (2008)
DOI: 10.1103/PhysRevA.78.061602
arXiv: 0809.0340

C. Klempt, T. Henninger, O. Topic, J. Will, W. Ertmer, E. Tiemann and J. Arlt (2007): K-40 - Rb-87 Feshbach resonances: Modeling the interatomic potential,  Phys. Rev. A 76, 020701(R) (2007)
DOI: 10.1103/PhysRevA.76.020701
arXiv: 0706.0240

C. Klempt, T. v. Zoest, T. Henninger, O. Topic, E. Rasel, W. Ertmer, and J. Arlt (2006): Ultraviolet light-induced atom desorption for large rubidium and potassium magneto-optical traps,  Phys. Rev. A 73, 013410 (2006) More info
DOI: 10.1103/PhysRevA.73.013410
arXiv: cond-mat/0509241

Holger Ahlers, Leonardo Badurina, Angelo Bassi, Baptiste Battelier, Quentin Beaufils, Kai Bongs, Philippe Bouyer, Claus Braxmaier, Oliver Buchmueller, Matteo Carlesso, Eric Charron, Maria Luisa Chiofalo, Robin Corgier, Sandro Donadi, Fabien Droz, Robert Ecoffet, John Ellis, Frédéric Estève, Naceur Gaaloul, Domenico Gerardi, Enno Giese, Jens Grosse, Aurélien Hees, Thomas Hensel, Waldemar Herr, Philippe Jetzer, Gina Kleinsteinberg, Carsten Klempt, Steve Lecomte, Louise Lopes, Sina Loriani, Gilles Métris, Thierry Martin, Victor Martín, Gabriel Müller, Miquel Nofrarias, Franck Pereira Dos Santos, Ernst M. Rasel, Alain Robert, Noah Saks, Mike Salter, Dennis Schlippert, Christian Schubert, Thilo Schuldt, Carlos F. Sopuerta, Christian Struckmann, Guglielmo M. Tino, Tristan Valenzuela, Wolf von Klitzing, Lisa Wörner, Peter Wolf, Nan Yu, Martin Zelan (2022): STE-QUEST: Space Time Explorer and QUantum Equivalence principle Space Test
arXiv: 2211.15412

C. Klempt, O. Topic, G. Gebreyesus, M. Scherer, T. Henninger, P. Hyllus, W. Ertmer, L. Santos, and J. Arlt (2010): Observation of Vacuum Fluctuations in a Spinor Bose-Einstein Condensate,  Proceedings of the XIX. International Conference On LASER SPECTROSCOPY 2009, H. Katori, H. Yoneda, K. Kakagawa, F. Shimizu, 39-48, ISBN-13 978-981-4282-33-8

B. Lücke (2014): Multi-particle entanglement in a spinor Bose-Einstein condensate for quantum-enhanced interferometry | File |

O. Topic (2009): Resonante Spindynamik in Bose-Einstein-Kondensaten | File |

T. Henninger (2008): Ultrakalte heteronukleare Feshbach-Moleküle,  2008 | File |

C. Klempt (2007): Wechselwirkung in Bose-Fermi-Quantengasen,  2007 | File |

A. P. Kulosa (2009): Aufbau eines Lasersystems zur Detektion und Manipulation von Atomen (Examensarbeit) | File |

J. Will (2007): Realisierung einer Magneto-Optischen Falle für ⁴¹K,  2007 | File |

O. Topic (2005): Präparation einer ultrakalten Bose-Fermi Mischung,  2005 | File |

L. Kattner (2008): Laser System for the Stabilization of Ultracold Feshbach Molecules,  2008 | File |

C. Waltermann (2009): Absorptionsmethoden für ultrakalte ⁸⁷Rb Ensembles

I. Geisel (2009): Aufbau und Charakterisierung eines Diodenlasers bei 690nm