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Статті в журналах з теми "Quantum-Degenerate mixtures"

Автор: Grafiati

Опубліковано: 7 липня 2024

Оновлено: 31 липня 2025

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1

Modugno, G., G. Roati, and M. Inguscio. "Quantum degenerate potassium-rubidium mixtures." Fortschritte der Physik 51, no. 45 (2003): 396–401. http://dx.doi.org/10.1002/prop.200310053.

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2

Wang Peng-Jun, Chen Hai-Xia, Xiong De-Zhi, Yu Xu-Dong, Gao Feng, and Zhang Jing. "The design of quadrapole-Ioffe configuration trap for quantum degenerate Fermi-Bose mixtures." Acta Physica Sinica 57, no. 8 (2008): 4840. http://dx.doi.org/10.7498/aps.57.4840.

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3

Belmonte-Beitia, Juan, Víctor M. Pérez-García, and Vadym Vekslerchik. "Modulational instability, solitons and periodic waves in a model of quantum degenerate boson–fermion mixtures." Chaos, Solitons & Fractals 32, no. 4 (2007): 1268–77. http://dx.doi.org/10.1016/j.chaos.2005.12.043.

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4

Alba-Arroyo, J. E., S. F. Caballero-Benitez, and R. Jáuregui. "Rotational Dynamics Induced by Low-Energy Binary Collisions of Quantum Droplets." Photonics 10, no. 7 (2023): 823. http://dx.doi.org/10.3390/photonics10070823.

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A theoretical analysis of the rotational dynamics induced by off-axis binary collisions of quantum droplets constituted by ultracold atoms is reported. We focus on quantum droplets formed by degenerate dilute Bose gases made from binary mixtures of alkaline atoms under feasible experimental conditions. The stability of the ground state is known to be longer for the chosen heteronuclear gases than for the homonuclear ones. In both cases, we find that the dynamics seem to privilege high similarity of the density of each atomic species. However, the evolution of the phase of the corresponding ord

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5

De-Zhi, Xiong, Chen Hai-Xia, Wang Peng-Jun, Yu Xu-Dong, Gao Feng, and Zhang Jing. "Quantum Degenerate Fermi–Bose Mixtures of 40 K and 87 Rb Atoms in a Quadrupole-Ioffe Configuration Trap." Chinese Physics Letters 25, no. 3 (2008): 843–46. http://dx.doi.org/10.1088/0256-307x/25/3/011.

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6

Buscemi, Francesco, Kodai Kobayashi, and Shintaro Minagawa. "A complete and operational resource theory of measurement sharpness." Quantum 8 (January 25, 2024): 1235. http://dx.doi.org/10.22331/q-2024-01-25-1235.

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Анотація:

We construct a resource theory of sharpness for finite-dimensional positive operator-valued measures (POVMs), where the sharpness&#x2212;non&#x2212;increasing operations are given by quantum preprocessing channels and convex mixtures with POVMs whose elements are all proportional to the identity operator. As required for a sound resource theory of sharpness, we show that our theory has maximal (i.e., sharp) elements, which are all equivalent, and coincide with the set of POVMs that admit a repeatable measurement. Among the maximal elements, conventional non-degenerate observables are c

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7

De Marco, Luigi, Giacomo Valtolina, Kyle Matsuda, William G. Tobias, Jacob P. Covey, and Jun Ye. "A degenerate Fermi gas of polar molecules." Science 363, no. 6429 (2019): 853–56. http://dx.doi.org/10.1126/science.aau7230.

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Experimental realization of a quantum degenerate gas of molecules would provide access to a wide range of phenomena in molecular and quantum sciences. However, the very complexity that makes ultracold molecules so enticing has made reaching degeneracy an outstanding experimental challenge over the past decade. We now report the production of a degenerate Fermi gas of ultracold polar molecules of potassium-rubidium. Through coherent adiabatic association in a deeply degenerate mixture of a rubidium Bose-Einstein condensate and a potassium Fermi gas, we produce molecules at temperatures below 0.

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8

Wu, Yu-Ping, Xing-Can Yao, Hao-Ze Chen, et al. "A quantum degenerate Bose–Fermi mixture of41K and6Li." Journal of Physics B: Atomic, Molecular and Optical Physics 50, no. 9 (2017): 094001. http://dx.doi.org/10.1088/1361-6455/aa658b.

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9

Fukuhara, T., T. Tsujimoto, and Y. Takahashi. "Quadrupole oscillations in a quantum degenerate Bose–Fermi mixture." Applied Physics B 96, no. 2-3 (2009): 271–74. http://dx.doi.org/10.1007/s00340-009-3375-5.

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10

Ferlaino, F., R. J. Brecha, P. Hannaford, et al. "Dipolar oscillations in a quantum degenerate Fermi Bose atomic mixture." Journal of Optics B: Quantum and Semiclassical Optics 5, no. 2 (2003): S3—S8. http://dx.doi.org/10.1088/1464-4266/5/2/351.

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11

YUAN Hongrui, LIU Yun, LI Xiang та DUAN Chuanxi. "Rotational Analysis of the Perpendicular Vibrational Bands of <sup>32</sup>SF<sub>6</sub>-Ar and <sup>32</sup>SF<sub>6</sub>-<sup>34</sup>SF<sub>6</sub> Complexes in the 10.6 μm Region". Acta Physica Sinica 74, № 17 (2025): 0. https://doi.org/10.7498/aps.74.20250726.

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Sulfur hexafluoride (SF<sub>6</sub>) is widely used in the electric and electronic industry. It is also an important green-house gas. The study of spectroscopy and structure of weakly bound complexes containing SF<sub>6</sub> is helpful to gain a deep understanding on the intermolecular interactions between SF<sub>6</sub> and other atoms or molecules. The rotationally resolved spectrum of the perpendicular vibrational band of <sup>32</sup>SF<sub>6</sub>-Ar in the <sup>32</sup>SF<sub>6</sub> <i>v</i>

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12

Klempt, C., T. Henninger, O. Topic, et al. "Transport of a quantum degenerate heteronuclear Bose-Fermi mixture in a harmonic trap." European Physical Journal D 48, no. 1 (2008): 121–26. http://dx.doi.org/10.1140/epjd/e2008-00067-5.

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13

Shahzamanian, M. A., and H. Yavary. "Phonon spectrum and damping of a dilute quantum degenerate Bose–Fermi mixture at finite temperature." Physics Letters A 340, no. 1-4 (2005): 161–69. http://dx.doi.org/10.1016/j.physleta.2005.03.056.

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14

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 (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 b

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15

Wilson, Kali E., Alexander Guttridge, Jack Segal, and Simon L. Cornish. "Quantum degenerate mixtures of Cs and Yb." Physical Review A 103, no. 3 (2021). http://dx.doi.org/10.1103/physreva.103.033306.

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16

Fukuhara, Takeshi, Seiji Sugawa, Yosuke Takasu, and Yoshiro Takahashi. "All-optical formation of quantum degenerate mixtures." Physical Review A 79, no. 2 (2009). http://dx.doi.org/10.1103/physreva.79.021601.

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17

Pasquiou, Benjamin, Alex Bayerle, Slava M. Tzanova, et al. "Quantum degenerate mixtures of strontium and rubidium atoms." Physical Review A 88, no. 2 (2013). http://dx.doi.org/10.1103/physreva.88.023601.

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18

Duda, Marcel, Xing-Yan Chen, Andreas Schindewolf, et al. "Transition from a polaronic condensate to a degenerate Fermi gas of heteronuclear molecules." Nature Physics, February 13, 2023. http://dx.doi.org/10.1038/s41567-023-01948-1.

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AbstractThe interplay of quantum statistics and interactions in atomic Bose–Fermi mixtures leads to a phase diagram markedly different from pure fermionic or bosonic systems. However, investigating this phase diagram remains challenging when bosons condense due to the resulting fast interspecies loss. Here we report observations consistent with a phase transition from a polaronic to a molecular phase in a density-matched degenerate Bose–Fermi mixture. The condensate fraction, representing the order parameter of the transition, is depleted by interactions, and the build-up of strong correlation

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19

Hara, Hideaki, Yosuke Takasu, Yoshifumi Yamaoka, John M. Doyle, and Yoshiro Takahashi. "Quantum Degenerate Mixtures of Alkali and Alkaline-Earth-Like Atoms." Physical Review Letters 106, no. 20 (2011). http://dx.doi.org/10.1103/physrevlett.106.205304.

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20

Sengupta, Pinaki, and Leonid P. Pryadko. "Quantum degenerate Bose-Fermi mixtures on one-dimensional optical lattices." Physical Review B 75, no. 13 (2007). http://dx.doi.org/10.1103/physrevb.75.132507.

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21

Cazalilla, M. A., and A. F. Ho. "Instabilities in Binary Mixtures of One-Dimensional Quantum Degenerate Gases." Physical Review Letters 91, no. 15 (2003). http://dx.doi.org/10.1103/physrevlett.91.150403.

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22

Hansen, Anders H., Alexander Y. Khramov, William H. Dowd, et al. "Production of quantum-degenerate mixtures of ytterbium and lithium with controllable interspecies overlap." Physical Review A 87, no. 1 (2013). http://dx.doi.org/10.1103/physreva.87.013615.

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23

van de Kraats, J., D. J. M. Ahmed-Braun, V. E. Colussi, and S. J. J. M. F. Kokkelmans. "Nonequilibrium dynamics and atom-pair coherence in strongly interacting Bose-Fermi mixtures." Physical Review Research 6, no. 4 (2024). http://dx.doi.org/10.1103/physrevresearch.6.043016.

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Theoretical treatments of nonequilibrium dynamics in strongly interacting Bose-Fermi mixtures are complicated by the inherent non-Gaussian nature of the vacuum two-body physics, invalidating the typical Hartree-Fock-Bogoliubov approximation. Here we apply the cumulant expansion to study nonequilibrium Bose-Fermi mixtures, which allows us to explicitly include the missing non-Gaussian quantum correlations, leading to a consistent dynamical theory of a Bose-Fermi mixture near an interspecies Feshbach resonance. We first apply our theory to a study of atom-pair coherence in the gas, which is sign

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24

Alba-Arroyo, J. E., S. F. Caballero-Benitez, and R. Jáuregui. "Weber number and the outcome of binary collisions between quantum droplets." Scientific Reports 12, no. 1 (2022). http://dx.doi.org/10.1038/s41598-022-22904-8.

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AbstractA theoretical analysis of binary collisions of quantum droplets under feasible experimental conditions is reported. Droplets formed from degenerate dilute Bose gases made up from binary mixtures of ultracold atoms are considered. Reliable expressions for the surface tension of the droplets are introduced based on a study of low energy excitations of their ground state within the random phase approximation. Their relevance is evaluated considering an estimation of the expected excitation energy having in mind the Thouless variational theorem. The surface tension expressions allow calcul

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25

Karpiuk, Tomasz, Marek Nikołajuk, Mariusz Gajda, and Mirosław Brewczyk. "Modelling quantum aspects of disruption of a white dwarf star by a black hole." Scientific Reports 11, no. 1 (2021). http://dx.doi.org/10.1038/s41598-021-81707-5.

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AbstractWe study the final stages of the evolution of a binary system consisted of a black hole and a white dwarf star. We implement the quantum hydrodynamic equations and carry out numerical simulations. As a model of a white dwarf star we consider a zero temperature droplet of attractively interacting degenerate atomic bosons and spin-polarized atomic fermions. Such mixtures are investigated experimentally nowadays. We find that the white dwarf star is stripped off its mass while passing the periastron. Due to nonlinear effects, the accretion disk originated from the white dwarf becomes frag

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26

Konečná, Andrea, Fadil Iyikanat, and F. Javier García de Abajo. "Entangling free electrons and optical excitations." Science Advances 8, no. 47 (2022). http://dx.doi.org/10.1126/sciadv.abo7853.

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The inelastic interaction between flying particles and optical nanocavities gives rise to entangled states in which some excitations of the latter are paired with momentum changes in the former. Specifically, free-electron entanglement with nanocavity modes opens appealing opportunities associated with the strong interaction capabilities of the electrons. However, the achievable degree of entanglement is currently limited by the lack of control over the resulting state mixtures. Here, we propose a scheme to generate pure entanglement between designated optical-cavity excitations and separable

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27

Геворгян, С. Т., та М. С. Геворгян. "Квантовая динамика невырожденного параметрического распада в оптическом резонаторе". Proceedings of NAS RA. Physics, 29 грудня 2022, 617–28. http://dx.doi.org/10.54503/0002-3035-2022-57.4-617.

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Для процесса невырожденного параметрического распада в оптическом резонаторе, в котором квант с энергией hw3 распадаетса на два кванта с энергиями hw2 и hw1 hw3= hw2 + hw1 hw исследована квантовая динамика числа фотонов, динамика квантовой энтропии и функции Вигнера взаимодействующих мод поля. Показано, что мода с частотой w3 в области очень сильной связи между взаимодействующими модами может локализоваться в сжатом состоянии, а моды с частотами w1 или w2 , не зависимо от значения коэффициента связи, локализуются в состояниях являющихся статистической смесью Фоковских состояний. Օպտիկական ռեզո

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28

Baiko, D. A. "Plasma screening of nuclear fusion reactions in liquid layers of compact degenerate stars: a first-principle study." Monthly Notices of the Royal Astronomical Society, September 21, 2021. http://dx.doi.org/10.1093/mnras/stab2702.

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Abstract A reliable description of nuclear fusion reactions in inner layers of white dwarfs and envelopes of neutron stars is important for realistic modelling of a wide range of observable astrophysical phenomena from accreting neutron stars to type Ia supernovae. We study the problem of screening of the Coulomb barrier impeding the reactions, by a plasma surrounding the fusing nuclei. Numerical calculations of the screening factor are performed from the first principles with the aid of quantum-mechanical path integrals in the model of a one-component plasma of atomic nuclei for temperatures

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29

LeBlanc, Matt, Benjamin Nachman та Christof Sauer. "Going off topics to demix quark and gluon jets in αS extractions". Journal of High Energy Physics 2023, № 2 (2023). http://dx.doi.org/10.1007/jhep02(2023)150.

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Abstract Quantum chromodynamics is the theory of the strong interaction between quarks and gluons; the coupling strength of the interaction, αS, is the least precisely-known of all interactions in nature. An extraction of the strong coupling from the radiation pattern within jets would provide a complementary approach to conventional extractions from jet production rates and hadronic event shapes, and would be a key achievement of jet substructure at the Large Hadron Collider (LHC). Presently, the relative fraction of quark and gluon jets in a sample is the limiting factor in such extractions,

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30

Hu, Hui, Xia-Ji Liu, and Michele Modugno. "Expansion of a quantum degenerate boson-fermion mixture." Physical Review A 67, no. 6 (2003). http://dx.doi.org/10.1103/physreva.67.063614.

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31

Hansen, Anders H., Alexander Khramov, William H. Dowd, Alan O. Jamison, Vladyslav V. Ivanov, and Subhadeep Gupta. "Quantum degenerate mixture of ytterbium and lithium atoms." Physical Review A 84, no. 1 (2011). http://dx.doi.org/10.1103/physreva.84.011606.

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32

Silber, C., S. Günther, C. Marzok, B. Deh, Ph W. Courteille, and C. Zimmermann. "Quantum-Degenerate Mixture of Fermionic Lithium and Bosonic Rubidium Gases." Physical Review Letters 95, no. 17 (2005). http://dx.doi.org/10.1103/physrevlett.95.170408.

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33

Hadzibabic, Z., C. A. Stan, K. Dieckmann, et al. "Two-Species Mixture of Quantum Degenerate Bose and Fermi Gases." Physical Review Letters 88, no. 16 (2002). http://dx.doi.org/10.1103/physrevlett.88.160401.

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34

Schäfer, F., Y. Haruna, and Y. Takahashi. "Realization of a quantum degenerate mixture of highly magnetic and nonmagnetic atoms." Physical Review A 107, no. 3 (2023). http://dx.doi.org/10.1103/physreva.107.l031306.

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35

Cao, Jin, Huan Yang, Zhen Su, et al. "Preparation of a quantum degenerate mixture of Na23K40 molecules and K40 atoms." Physical Review A 107, no. 1 (2023). http://dx.doi.org/10.1103/physreva.107.013307.

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36

Li, Ziliang, Zhengyu Gu, Zhenlian Shi, Pengjun Wang, and Jing Zhang. "Quantum degenerate Bose-Fermi atomic gas mixture of $^{23}$Na and $^{40}$K." Chinese Physics B, November 9, 2022. http://dx.doi.org/10.1088/1674-1056/aca14f.

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Abstract We report a compact experimental setup for producing a quantum degenerate mixture of Bose $^{23}$Na and Fermi $^{40}$K gases. The atoms are collected in dual dark magneto-optical traps (MOT) with species timesharing loading to reduce the light-induced loss, and then further cooled using the gray molasses technique on the $D_{2}$ line for $^{23}$Na and $D_{1}$ line for $^{40}$K. The microwave evaporation cooling is used to cool $^{23}$Na in $| F=2,m_{F}=2\rangle$ in an optically plugged magnetic trap, meanwhile, $^{40}$K in $| F=9/2,m_{F}=9/2\rangle$ is sympathetic cooled. Then the mix

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37

Rakshit, Debraj, Tomasz Karpiuk, Miroslaw Brewczyk, and Mariusz Gajda. "Quantum Bose-Fermi droplets." SciPost Physics 6, no. 6 (2019). http://dx.doi.org/10.21468/scipostphys.6.6.079.

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We study the stability of a zero temperature mixture of attractively interacting degenerate bosons and spin-polarized fermions in the absence of confinement. We demonstrate that higher order corrections to the standard mean-field energy can lead to a formation of Bose-Fermi liquid droplets – self-bound systems in three-dimensional space. The stability analysis of the homogeneous case is supported by numerical simulations of finite systems by explicit inclusion of surface effects. We discuss the experimental feasibility of formation of quantum droplets and indicate the main obstacle – inelastic

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38

Pu, Han, Weiping Zhang, Martin Wilkens, and Pierre Meystre. "Phonon Spectrum and Dynamical Stability of a Dilute Quantum Degenerate Bose-Fermi Mixture." Physical Review Letters 88, no. 7 (2002). http://dx.doi.org/10.1103/physrevlett.88.070408.

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39

Taglieber, M., A. C. Voigt, T. Aoki, T. W. Hänsch, and K. Dieckmann. "Quantum Degenerate Two-Species Fermi-Fermi Mixture Coexisting with a Bose-Einstein Condensate." Physical Review Letters 100, no. 1 (2008). http://dx.doi.org/10.1103/physrevlett.100.010401.

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40

Takatsuka, Kazuo, and Yasuki Arasaki. "Mechanism of quantum chaos in molecular nonadiabatic electron dynamics." Journal of Chemical Physics 161, no. 6 (2024). http://dx.doi.org/10.1063/5.0219345.

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The quantum nuclear kinematic interactions with electrons (or nonadiabatic interactions) are the inherent driving force that possibly causes a mixture of the adiabatic electronic states in molecules. Particularly in systems whose electron wavepackets lie in a densely quasi-degenerate electronic-state manifold where many-dimensional and many-state nonadiabatic interactions last continually, we have found before that those extensive mixings can lead to a quantum electronic-state chaos [K. Takatsuka and Y. Arasaki, J. Chem. Phys. 159, 074110 (2023)]. This chaos of electron dynamics is a new kind

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41

Park, Jee Woo, Cheng-Hsun Wu, Ibon Santiago, et al. "Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions." Physical Review A 85, no. 5 (2012). http://dx.doi.org/10.1103/physreva.85.051602.

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42

Dubessy, Romain, and Hélène Perrin. "Quantum gases in bubble traps." AVS Quantum Science 7, no. 1 (2025). https://doi.org/10.1116/5.0242948.

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This paper presents a review and perspective on quantum gases in bubble traps. We emphasize how the idea of realizing shell-shaped condensates emerged and was enabled by the invention of the radiofrequency adiabatic potential technique. We review the many subsequent theoretical works that address the new physics emerging for a condensate trapped on a closed surface. We present the current status of the experiments, the challenges ahead, and highlight how a different approach using an immiscible mixture of two condensates enabled the first observation of a shell-shaped degenerate gas. Finally,

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43

Yip, S. K. "Comment on “Phonon Spectrum and Dynamical Stability of a Dilute Quantum Degenerate Bose-Fermi Mixture”." Physical Review Letters 90, no. 17 (2003). http://dx.doi.org/10.1103/physrevlett.90.178901.

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44

Miao, Jie, Guoqi Bian, Biao Shan, et al. "Achieving ultracold Bose-Fermi mixture of $^{87}$Rb and $^{40}$K with dual dark magnetic-optical-trap." Chinese Physics B, February 25, 2022. http://dx.doi.org/10.1088/1674-1056/ac5882.

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Abstract We demonstrate that dual dark MOTs have great importance in the two-species $^{87}$Rb and $^{40}$K mixture compared with dual bright MOTs. As comparison, dark MOT has a little improvement in the trapping of single-species $^{87}$Rb or $^{40}$K gases compared with bright MOT. For the case of loading two-species $^{87}$Rb and $^{40}$K simultaneously, the improvement of $^{40}$K in the dual dark MOTs is mainly from the reduction of light-assisted collision losses. The dual dark MOTs employ a pair of conical lenses to produce the hollow beam for repump laser with high efficiency. The numb

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