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Journal articles on the topic 'Ultracold gases'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 March 2023

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1

Yang, Huan, Jin Cao, Zhen Su, Jun Rui, Bo Zhao, and Jian-Wei Pan. "Creation of an ultracold gas of triatomic molecules from an atom–diatomic molecule mixture." Science 378, no. 6623 (December 2, 2022): 1009–13. http://dx.doi.org/10.1126/science.ade6307.

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In recent years, there has been notable progress in the preparation and control of ultracold gases of diatomic molecules. The next experimental challenge is the production of ultracold polyatomic molecular gases. Here, we report the creation of an ultracold gas of 23 Na 40 K 2 triatomic molecules from a mixture of ground-state sodium-23–potassium-40 ( 23 Na 40 K) molecules and potassium-40 ( 40 K) atoms. The triatomic molecules were created by adiabatic magneto-association through an atom–diatomic molecule Feshbach resonance. We obtained clear evidence for the creation of triatomic molecules by directly detecting them using radio-frequency dissociation. Approximately 4000 triatomic molecules with a high-peak phase-space density of 0.05 could be created. The ultracold triatomic molecules can serve as a launchpad to probe the three-body potential energy surface and may be used to prepare quantum degenerate triatomic molecular gases.

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2

CROWELL, LAWRENCE B. "ULTRACOLD QUANTUM GASES AS PROBES OF THE UNRUH EFFECT." International Journal of Modern Physics D 15, no. 12 (December 2006): 2191–96. http://dx.doi.org/10.1142/s0218271806009509.

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A high accelerated ultracold quantum gas should be heated by the thermal vacuum of the Unruh effect. This essay discusses possible experimental designs for detecting the Unruh effect with ultracold quantum bosonic gases.

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3

Kanamoto, Rina, and Pierre Meystre. "Optomechanics of ultracold atomic gases." Physica Scripta 82, no. 3 (August 18, 2010): 038111. http://dx.doi.org/10.1088/0031-8949/82/03/038111.

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4

Schmaljohann, H., M. Erhard, J. Kronjägert, M. Kottke, S. Van Staa, J. J. Arlt, K. Bongs, and K. Sengstock. "Magnetism in ultracold quantum gases." Journal of Modern Optics 51, no. 12 (August 2004): 1829–41. http://dx.doi.org/10.1080/09500340408232494.

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5

Chin, Cheng, Rudolf Grimm, Paul Julienne, and Eite Tiesinga. "Feshbach resonances in ultracold gases." Reviews of Modern Physics 82, no. 2 (April 29, 2010): 1225–86. http://dx.doi.org/10.1103/revmodphys.82.1225.

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6

Bergeson, Scott, and Thomas Killian. "Ultracold plasmas and Rydberg gases." Physics World 16, no. 2 (February 2003): 37–41. http://dx.doi.org/10.1088/2058-7058/16/2/36.

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7

Gasenzer, T. "Ultracold gases far from equilibrium." European Physical Journal Special Topics 168, no. 1 (February 2009): 89–148. http://dx.doi.org/10.1140/epjst/e2009-00960-5.

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8

Chin, Cheng. "Ultracold atomic gases going strong." National Science Review 3, no. 2 (November 9, 2015): 168–70. http://dx.doi.org/10.1093/nsr/nwv073.

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9

Howard, Eric. "Physics on Ultracold quantum gases." Contemporary Physics 61, no. 1 (January 2, 2020): 63–64. http://dx.doi.org/10.1080/00107514.2020.1744731.

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10

Yamashita, M. T., T. Frederico, and Lauro Tomio. "Triatomic states in ultracold gases." Nuclear Physics A 790, no. 1-4 (June 2007): 788c—791c. http://dx.doi.org/10.1016/j.nuclphysa.2007.03.027.

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11

Zhai, Hui. "Strongly interacting ultracold quantum gases." Frontiers of Physics in China 4, no. 1 (March 2009): 1–20. http://dx.doi.org/10.1007/s11467-009-0001-2.

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12

Scazza, Francesco, Matteo Zaccanti, Pietro Massignan, Meera M. Parish, and Jesper Levinsen. "Repulsive Fermi and Bose Polarons in Quantum Gases." Atoms 10, no. 2 (May 27, 2022): 55. http://dx.doi.org/10.3390/atoms10020055.

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Polaron quasiparticles are formed when a mobile impurity is coupled to the elementary excitations of a many-particle background. In the field of ultracold atoms, the study of the associated impurity problem has attracted a growing interest over the last fifteen years. Polaron quasiparticle properties are essential to our understanding of a variety of paradigmatic quantum many-body systems realized in ultracold atomic gases and in the solid state, from imbalanced Bose–Fermi and Fermi–Fermi mixtures to fermionic Hubbard models. In this topical review, we focus on the so-called repulsive polaron branch, which emerges as an excited many-body state in systems with underlying attractive interactions such as ultracold atomic mixtures, and is characterized by an effective repulsion between the impurity and the surrounding medium. We give a brief account of the current theoretical and experimental understanding of repulsive polaron properties, for impurities embedded in both fermionic and bosonic media, and we highlight open issues deserving future investigations.

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13

Trefzger, C., C. Menotti, B. Capogrosso-Sansone, and M. Lewenstein. "Ultracold dipolar gases in optical lattices." Journal of Physics B: Atomic, Molecular and Optical Physics 44, no. 19 (September 2, 2011): 193001. http://dx.doi.org/10.1088/0953-4075/44/19/193001.

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14

Domínguez-Castro, G. A., and R. Paredes. "Unconventional Superfluidity in Ultracold Dipolar Gases." Journal of Physics: Conference Series 1540 (April 2020): 012002. http://dx.doi.org/10.1088/1742-6596/1540/1/012002.

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15

Giorgini, Stefano, Lev P. Pitaevskii, and Sandro Stringari. "Theory of ultracold atomic Fermi gases." Reviews of Modern Physics 80, no. 4 (October 2, 2008): 1215–74. http://dx.doi.org/10.1103/revmodphys.80.1215.

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16

Bloch, Immanuel, Jean Dalibard, and Wilhelm Zwerger. "Many-body physics with ultracold gases." Reviews of Modern Physics 80, no. 3 (July 18, 2008): 885–964. http://dx.doi.org/10.1103/revmodphys.80.885.

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17

Haikka, P., S. McEndoo, G. De Chiara, G. M. Palma, and S. Maniscalco. "Robust non-Markovianity in ultracold gases." Physica Scripta T151 (November 1, 2012): 014060. http://dx.doi.org/10.1088/0031-8949/2012/t151/014060.

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18

Bloch, Immanuel. "Ultracold quantum gases in optical lattices." Nature Physics 1, no. 1 (October 2005): 23–30. http://dx.doi.org/10.1038/nphys138.

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19

Bloch, Immanuel, Jean Dalibard, and Sylvain Nascimbène. "Quantum simulations with ultracold quantum gases." Nature Physics 8, no. 4 (April 2012): 267–76. http://dx.doi.org/10.1038/nphys2259.

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20

Pattard, T., T. Pohl, and J. M. Rost. "Ultracold neutral plasmas and Rydberg gases." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 233, no. 1-4 (May 2005): 132–40. http://dx.doi.org/10.1016/j.nimb.2005.03.095.

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21

Hutson, Jeremy M., and Pavel Soldán. "Molecule formation in ultracold atomic gases." International Reviews in Physical Chemistry 25, no. 4 (October 2006): 497–526. http://dx.doi.org/10.1080/01442350600921772.

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22

Hutson, Jeremy M., and Pavel Soldán. "Molecular collisions in ultracold atomic gases." International Reviews in Physical Chemistry 26, no. 1 (January 2007): 1–28. http://dx.doi.org/10.1080/01442350601084562.

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23

Ferlaino, F., A. Zenesini, M. Berninger, B. Huang, H. C. Nägerl, and R. Grimm. "Efimov Resonances in Ultracold Quantum Gases." Few-Body Systems 51, no. 2-4 (October 9, 2011): 113–33. http://dx.doi.org/10.1007/s00601-011-0260-7.

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24

Strecker, K. E., G. B. Partridge, A. G. Truscott, and R. G. Hulet. "Tunable interactions in ultracold Bose gases." Advances in Space Research 35, no. 1 (January 2005): 78–81. http://dx.doi.org/10.1016/j.asr.2003.09.058.

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25

DeMarco, Brian, and Joseph H. Thywissen. "No vacancy in the Fermi sea." Science 374, no. 6570 (November 19, 2021): 936–37. http://dx.doi.org/10.1126/science.abm0072.

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26

Haas, Fernando, and Rodrigo Vidmar. "Bernstein–Greene–Kruskal and Case–Van Kampen Modes for the Landau–Vlasov Equation." Atoms 10, no. 1 (March 1, 2022): 28. http://dx.doi.org/10.3390/atoms10010028.

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The one-dimensional Landau–Vlasov equation describing ultracold dilute bosonic gases in the mean-field collisionless regime under strong transverse confinement is analyzed using traditional methods of plasma physics. Time-independent, stationary solutions are found using a similar approach as for the Bernstein–Greene–Kruskal nonlinear plasma modes. Linear stationary waves similar to the Case–Van Kampen plasma normal modes are also shown to be available. The new bosonic solutions have no decaying or growth properties, in the same sense as the analog plasma solutions. The results are applied for real ultracold bosonic gases accessible in contemporary laboratory experiments.

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27

Miller, Johanna L. "Polariton condensates show their nonequilibrium side." Physics Today 75, no. 11 (November 1, 2022): 16–18. http://dx.doi.org/10.1063/pt.3.5116.

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28

Langen, Tim. "Dipolar supersolids: Solid and superfluid at the same time." Physics Today 75, no. 3 (March 1, 2022): 36–41. http://dx.doi.org/10.1063/pt.3.4961.

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29

Stringari, Sandro. "Publisher Correction: Ultracold gases: Second sound seen." Nature Physics 17, no. 7 (June 14, 2021): 867. http://dx.doi.org/10.1038/s41567-021-01297-x.

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30

Recati, Alessio, and Sandro Stringari. "Coherently Coupled Mixtures of Ultracold Atomic Gases." Annual Review of Condensed Matter Physics 13, no. 1 (March 10, 2022): 407–32. http://dx.doi.org/10.1146/annurev-conmatphys-031820-121316.

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This article summarizes some of the relevant features exhibited by binary mixtures of Bose–Einstein condensates in the presence of coherent coupling at zero temperature. The coupling, which is experimentally produced by proper photon transitions, can involve either negligible momentum transfer from the electromagnetic radiation (Rabi coupling) or large momentum transfer (Raman coupling) associated with spin–orbit effects. The nature of the quantum phases exhibited by coherently coupled mixtures is discussed in detail, including their paramagnetic, ferromagnetic, and, in the case of spin–orbit coupling, supersolid phases. The behavior of the corresponding elementary excitations is discussed, with explicit emphasis on the novel features caused by the spin-like degree of freedom. Focus is further given to the topological excitations (solitons, vortices) as well as to the superfluid properties. This review also points out relevant open questions that deserve more systematic theoretical and experimental investigations.

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31

Schaff, Jean-François, Pablo Capuzzi, Guillaume Labeyrie, and Patrizia Vignolo. "Shortcuts to adiabaticity for trapped ultracold gases." New Journal of Physics 13, no. 11 (November 11, 2011): 113017. http://dx.doi.org/10.1088/1367-2630/13/11/113017.

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32

CHIN, CHENG, ANDREW J. KERMAN, VLADAN VULETIĆ, and STEVEN CHU. "CONTROLLED ATOM-MOLECULE INTERACTIONS IN ULTRACOLD GASES." Modern Physics Letters A 18, no. 02n06 (February 28, 2003): 398–401. http://dx.doi.org/10.1142/s0217732303010557.

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We observe and study the dynamic formation of cold Cs 2 molecules near collision Feshbach resonances in a cold cesium sample. The resonance Iinewidth is as low as E/h = 5 kHz , or equivalently, 10-11 eV. We suggest that few-atom, interaction effects can be studied in a 3D optical lattice where several atoms can be confined and isolated in an optical cell, which allows exquisite control of the atomic density and the interaction cross section.

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33

Ketterle, W., M. R. Andrews, K. B. Davis, D. S. Durfee, D. M. Kurn, M. O. Mewes, and N. J. van Druten. "Bose–Einstein condensation of ultracold atomic gases." Physica Scripta T66 (January 1, 1996): 31–37. http://dx.doi.org/10.1088/0031-8949/1996/t66/004.

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34

Batchelor, M. T., A. Foerster, X.-W. Guan, and C. C. N. Kuhn. "Exactly solvable models and ultracold Fermi gases." Journal of Statistical Mechanics: Theory and Experiment 2010, no. 12 (December 6, 2010): P12014. http://dx.doi.org/10.1088/1742-5468/2010/12/p12014.

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35

You, Li. "Observing second sound in ultracold Fermi gases." National Science Review 1, no. 1 (December 6, 2013): 2–3. http://dx.doi.org/10.1093/nsr/nwt010.

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36

Ulmanis, Juris, Stephan Häfner, Eva D. Kuhnle, and Matthias Weidemüller. "Heteronuclear Efimov resonances in ultracold quantum gases." National Science Review 3, no. 2 (April 21, 2016): 174–88. http://dx.doi.org/10.1093/nsr/nww018.

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Abstract The Efimov scenario is a universal three-body effect addressing many areas of modern quantum physics. It plays an important role in the transition between few- and many-body physics and has enabled important breakthroughs in the understanding of the universal few-body theory. We review the basic concepts of the Efimov scenario with specific emphasis on the similarities and differences between homonuclear and heteronuclear systems. In the latter scenario, the existence of a second, independently tunable interaction parameter enables novel few-body phenomena that are universal and have no counterexamples in the homonuclear case. We discuss recent experimental approaches using ultracold atomic gases with magnetically tunable interactions and elucidate the role of short-range interactions in the emergence of universal and non-universal behavior.

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37

Karpiuk, Tomasz, Miroslaw Brewczyk, and Kazimierz Rzazewski. "Solitons and vortices in ultracold fermionic gases." Journal of Physics B: Atomic, Molecular and Optical Physics 35, no. 14 (July 3, 2002): L315—L321. http://dx.doi.org/10.1088/0953-4075/35/14/101.

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38

Cai, Yanping, Daniel G. Allman, Jesse Evans, Parth Sabharwal, and Kevin C. Wright. "Monolithic bowtie cavity traps for ultracold gases." Journal of the Optical Society of America B 37, no. 12 (November 6, 2020): 3596. http://dx.doi.org/10.1364/josab.401262.

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39

Damski, Bogdan. "Shock waves in ultracold Fermi (Tonks) gases." Journal of Physics B: Atomic, Molecular and Optical Physics 37, no. 5 (February 17, 2004): L85—L91. http://dx.doi.org/10.1088/0953-4075/37/5/l01.

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40

Stringari, Sandro. "Bose–Einstein condensation in ultracold atomic gases." Physics Letters A 347, no. 1-3 (November 2005): 150–56. http://dx.doi.org/10.1016/j.physleta.2005.09.051.

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41

De Chiara, G., and A. Sanpera. "Detection of Entanglement in Ultracold Lattice Gases." Journal of Low Temperature Physics 165, no. 5-6 (September 28, 2011): 292–305. http://dx.doi.org/10.1007/s10909-011-0403-8.

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42

Combescot, Roland. "Ultracold Fermi Gases : The BEC-BCS Crossover." Journal of Low Temperature Physics 145, no. 1-4 (November 22, 2006): 267–76. http://dx.doi.org/10.1007/s10909-006-9233-5.

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43

Gasenzer, Thomas, Jürgen Berges, Michael G. Schmidt, and Marcos Seco. "Ultracold atomic quantum gases far from equilibrium." Nuclear Physics A 785, no. 1-2 (March 2007): 214–17. http://dx.doi.org/10.1016/j.nuclphysa.2006.11.155.

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44

Juzeliūnas, Gediminas, Julius Ruseckas, and Patrik Öhberg. "Effective magnetic fields in ultracold atomic gases." Lithuanian Journal of Physics 45, no. 3 (2005): 191–99. http://dx.doi.org/10.3952/lithjphys.45302.

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45

Becker, C., P. Soltan-Panahi, J. Kronjäger, S. Dörscher, K. Bongs, and K. Sengstock. "Ultracold quantum gases in triangular optical lattices." New Journal of Physics 12, no. 6 (June 28, 2010): 065025. http://dx.doi.org/10.1088/1367-2630/12/6/065025.

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46

Chen, Qijin, and Jibiao Wang. "Pseudogap phenomena in ultracold atomic Fermi gases." Frontiers of Physics 9, no. 5 (October 2014): 539–70. http://dx.doi.org/10.1007/s11467-014-0448-7.

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47

Rico, E., M. Dalmonte, P. Zoller, D. Banerjee, M. Bögli, P. Stebler, and U. J. Wiese. "SO(3) “Nuclear Physics” with ultracold Gases." Annals of Physics 393 (June 2018): 466–83. http://dx.doi.org/10.1016/j.aop.2018.03.020.

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48

Wolf, Bernd, Andreas Honecker, Walter Hofstetter, Ulrich Tutsch, and Michael Lang. "Cooling through quantum criticality and many-body effects in condensed matter and cold gases." International Journal of Modern Physics B 28, no. 26 (October 20, 2014): 1430017. http://dx.doi.org/10.1142/s0217979214300175.

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This article reviews some recent developments for new cooling technologies in the fields of condensed matter physics and cold gases, both from an experimental and theoretical point of view. The main idea is to make use of distinct many-body interactions of the system to be cooled which can be some cooling stage or the material of interest itself, as is the case in ultracold gases. For condensed matter systems, we discuss magnetic cooling schemes based on a large magnetocaloric effect as a result of a nearby quantum phase transition and consider effects of geometrical frustration. For ultracold gases, we review many-body cooling techniques, such as spin-gradient and Pomeranchuk cooling, which can be applied in the presence of an optical lattice. We compare the cooling performance of these new techniques with that of conventional approaches and discuss state-of-the-art applications.

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49

SHLYAPNIKOV, G. V. "SUPERFLUID REGIMES IN DEGENERATE ATOMIC FERMI GASES." International Journal of Modern Physics B 20, no. 19 (July 30, 2006): 2739–54. http://dx.doi.org/10.1142/s0217979206035242.

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We give a brief overview of recent studies of quantum degenerate regimes in ultracold Fermi gases. The attention is focused on the regime of Bose-Einstein condensation of weakly bound molecules of fermionic atoms, formed at a large positive scattering length for the interspecies atom-atom interaction. We analyze remarkable collisional stability of these molecules and draw prospects for future studies.

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50

Xie, T., A. Orbán, X. Xing, E. Luc-Koenig, R. Vexiau, O. Dulieu, and N. Bouloufa-Maafa. "Engineering long-range interactions between ultracold atoms with light." Journal of Physics B: Atomic, Molecular and Optical Physics 55, no. 3 (February 2, 2022): 034001. http://dx.doi.org/10.1088/1361-6455/ac4b40.

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Abstract Ultracold temperatures in dilute quantum gases opened the way to an exquisite control of matter at the quantum level. Here we focus on the control of ultracold atomic collisions using a laser to engineer their interactions at large interatomic distances. We show that the entrance channel of two colliding ultracold atoms can be coupled to a repulsive collisional channel by the laser light so that the overall interaction between the two atoms becomes repulsive: this prevents them to come close together and to undergo inelastic processes, thus protecting the atomic gases from unwanted losses. We illustrate such an optical shielding (OS) mechanism with 39K and 133Cs atoms colliding at ultracold temperature (<1 μK). The process is described in the framework of the dressed-state picture and we then solve the resulting stationary coupled Schrödinger equations. The role of spontaneous emission and photoinduced inelastic scattering is also investigated as possible limitations of the shielding efficiency. We predict an almost complete suppression of inelastic collisions over a broad range of Rabi frequencies and detunings from the 39K D2 line of the OS laser, both within the [0, 200 MHz] interval. We found that the polarization of the shielding laser has a minor influence on this efficiency. This proposal could easily be formulated for other bialkali-metal pairs as their long-range interaction are all very similar to each other.

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