Relevant bibliographies by topics / Quantum-Degenerate mixtures / Journal articles

Journal articles on the topic 'Quantum-Degenerate mixtures'

To see the other types of publications on this topic, follow the link: Quantum-Degenerate mixtures.
Author: Grafiati
Published: 7 July 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 40 journal articles for your research on the topic 'Quantum-Degenerate mixtures.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Modugno, G., G. Roati, and M. Inguscio. "Quantum degenerate potassium-rubidium mixtures." Fortschritte der Physik 51, no. 45 (May 7, 2003): 396–401. http://dx.doi.org/10.1002/prop.200310053.

Full text
APA, Harvard, Vancouver, ISO, and other styles
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.

Full text
APA, Harvard, Vancouver, ISO, and other styles
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 (May 2007): 1268–77. http://dx.doi.org/10.1016/j.chaos.2005.12.043.

Full text
APA, Harvard, Vancouver, ISO, and other styles
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 (July 14, 2023): 823. http://dx.doi.org/10.3390/photonics10070823.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 order parameter differs significantly for heteronuclear admixtures. We evaluate the fidelity as a figure of merit for the overlap between the order parameters of each atomic species. Dynamical evidence of the differences between the phases of the order parameters is predicted to manifest in their corresponding linear and angular momenta. We numerically verify that the total angular and linear momenta are both conserved during the collision. Some direct correlations between the Weber number and the impact parameter with the distribution of the dynamical variables are established.
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 (March 2008): 843–46. http://dx.doi.org/10.1088/0256-307x/25/3/011.

Full text
APA, Harvard, Vancouver, ISO, and other styles
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.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
We construct a resource theory of sharpness for finite-dimensional positive operator-valued measures (POVMs), where the sharpness−non−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 characterized as the canonical ones. More generally, we quantify sharpness in terms of a class of monotones, expressed as the EPR–Ozawa correlations between the given POVM and an arbitrary reference POVM. We show that one POVM can be transformed into another by means of a sharpness-non-increasing operation if and only if the former is sharper than the latter with respect to all monotones. Thus, our resource theory of sharpness is complete, in the sense that the comparison of all monotones provides a necessary and sufficient condition for the existence of a sharpness-non-increasing operation between two POVMs, and operational, in the sense that all monotones are in principle experimentally accessible.
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 (January 17, 2019): 853–56. http://dx.doi.org/10.1126/science.aau7230.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 0.3 times the Fermi temperature. We explore the properties of this reactive gas and demonstrate how degeneracy suppresses chemical reactions, making a long-lived degenerate gas of polar molecules a reality.
8

Wu, Yu-Ping, Xing-Can Yao, Hao-Ze Chen, Xiang-Pei Liu, Xiao-Qiong Wang, Yu-Ao Chen, and Jian-Wei Pan. "A quantum degenerate Bose–Fermi mixture of41K and6Li." Journal of Physics B: Atomic, Molecular and Optical Physics 50, no. 9 (April 6, 2017): 094001. http://dx.doi.org/10.1088/1361-6455/aa658b.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Fukuhara, T., T. Tsujimoto, and Y. Takahashi. "Quadrupole oscillations in a quantum degenerate Bose–Fermi mixture." Applied Physics B 96, no. 2-3 (February 13, 2009): 271–74. http://dx.doi.org/10.1007/s00340-009-3375-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ferlaino, F., R. J. Brecha, P. Hannaford, F. Riboli, G. Roati, G. Modugno, and M. Inguscio. "Dipolar oscillations in a quantum degenerate Fermi Bose atomic mixture." Journal of Optics B: Quantum and Semiclassical Optics 5, no. 2 (April 1, 2003): S3—S8. http://dx.doi.org/10.1088/1464-4266/5/2/351.

Full text
APA, Harvard, Vancouver, ISO, and other styles
11

Klempt, C., T. Henninger, O. Topic, J. Will, St Falke, W. Ertmer, and J. Arlt. "Transport of a quantum degenerate heteronuclear Bose-Fermi mixture in a harmonic trap." European Physical Journal D 48, no. 1 (April 18, 2008): 121–26. http://dx.doi.org/10.1140/epjd/e2008-00067-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

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 (June 2005): 161–69. http://dx.doi.org/10.1016/j.physleta.2005.03.056.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

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.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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.
14

Wilson, Kali E., Alexander Guttridge, Jack Segal, and Simon L. Cornish. "Quantum degenerate mixtures of Cs and Yb." Physical Review A 103, no. 3 (March 9, 2021). http://dx.doi.org/10.1103/physreva.103.033306.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Fukuhara, Takeshi, Seiji Sugawa, Yosuke Takasu, and Yoshiro Takahashi. "All-optical formation of quantum degenerate mixtures." Physical Review A 79, no. 2 (February 3, 2009). http://dx.doi.org/10.1103/physreva.79.021601.

Full text
APA, Harvard, Vancouver, ISO, and other styles
16

Pasquiou, Benjamin, Alex Bayerle, Slava M. Tzanova, Simon Stellmer, Jacek Szczepkowski, Mark Parigger, Rudolf Grimm, and Florian Schreck. "Quantum degenerate mixtures of strontium and rubidium atoms." Physical Review A 88, no. 2 (August 1, 2013). http://dx.doi.org/10.1103/physreva.88.023601.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Duda, Marcel, Xing-Yan Chen, Andreas Schindewolf, Roman Bause, Jonas von Milczewski, Richard Schmidt, Immanuel Bloch, and Xin-Yu Luo. "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.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 correlations results in the emergence of a molecular Fermi gas. The features of the underlying quantum phase transition represent a new phenomenon complementary to the paradigmatic Bose–Einstein condensate/Bardeen–Cooper–Schrieffer crossover observed in Fermi systems. By driving the system through the transition, we produce a sample of sodium–potassium molecules exhibiting a large molecule-frame dipole moment in the quantum-degenerate regime.
18

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 (May 19, 2011). http://dx.doi.org/10.1103/physrevlett.106.205304.

Full text
APA, Harvard, Vancouver, ISO, and other styles
19

Sengupta, Pinaki, and Leonid P. Pryadko. "Quantum degenerate Bose-Fermi mixtures on one-dimensional optical lattices." Physical Review B 75, no. 13 (April 30, 2007). http://dx.doi.org/10.1103/physrevb.75.132507.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

Cazalilla, M. A., and A. F. Ho. "Instabilities in Binary Mixtures of One-Dimensional Quantum Degenerate Gases." Physical Review Letters 91, no. 15 (October 8, 2003). http://dx.doi.org/10.1103/physrevlett.91.150403.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Hansen, Anders H., Alexander Y. Khramov, William H. Dowd, Alan O. Jamison, Benjamin Plotkin-Swing, Richard J. Roy, and Subhadeep Gupta. "Production of quantum-degenerate mixtures of ytterbium and lithium with controllable interspecies overlap." Physical Review A 87, no. 1 (January 16, 2013). http://dx.doi.org/10.1103/physreva.87.013615.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

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 (November 2, 2022). http://dx.doi.org/10.1038/s41598-022-22904-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 calculating the Weber number of the droplets involved in the collisions. Several regimes on the outcomes of the binary frontal collisions that range from the coalescence of the quantum droplets to their disintegration into smaller droplets are identified. Atoms losses of the droplets derived from self-evaporation and three-body scattering are quantified for both homo- and hetero-nuclear mixtures. Their control is mandatory for the observation of some interesting effects arising from droplets collisions.
23

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 (January 27, 2021). http://dx.doi.org/10.1038/s41598-021-81707-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 fragmented and the onset of a quantum turbulence with giant quantized vortices present in the bosonic component of the accretion disk is observed. The binary system ends its life in a spectacular way, revealing quantum features underlying the white dwarf star’s structure. We find a charged mass, falling onto a black hole, could be responsible for recently discovered ultraluminous X-ray bursts. The simulations show that final passage of a white dwarf near a black hole can cause a gamma-ray burst.
24

Konečná, Andrea, Fadil Iyikanat, and F. Javier García de Abajo. "Entangling free electrons and optical excitations." Science Advances 8, no. 47 (November 25, 2022). http://dx.doi.org/10.1126/sciadv.abo7853.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 free-electron states. We shape the electron wave function profile to select the accessible cavity modes and simultaneously associate them with targeted electron scattering directions. This concept is exemplified through theoretical calculations of free-electron entanglement with degenerate and nondegenerate plasmon modes in silver nanoparticles and atomic vibrations in an inorganic molecule. The generated entanglement can be further propagated through its electron component to extend quantum interactions beyond existing protocols.
25

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

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 ռեզոնատորում չայլասերված պարամետրիկական տրոհման երևույթի համար, որում hw3 էներգիայով քվանտը տրոհվում է hw2 և hw1 էներգիաներով երկու քվանտի, որտեղ (hw3= hw2 + hw1) hw, հետազոտված է ֆոտոնների թվի, դաշտի փոխազդող մոդերի քվանտային էնտրոպիաների և Վիգների ֆունկցիաների քվանտային դինամիկան: Ցույց է տրված, որ w3 հաճախություն ունեցող մոդանը մոդերի միջև շատ ուժեղ փոխազդեցության տիրույթում կարող է լոկալացվել սեղմ վիճակում, իսկ w1 կամ w2 հաճախությամբ մոդերը անկախ մոդերի միջև եղած փոխազդեցության գործակցի արժեքից լոկալացվում են Ֆոկի վիճակների վիճակագրական խառնուրդ հանդիսացող վիճակում: The quantum dynamics of the number of photons, of the quantum entropy, and the Wigner functions of field interacting modes are studied for the process of non-degenerate parametric decay in an optical cavity, where a quantum with energy hw3 decays into two photons with energies hw2 and hw1 (hw3= hw2 + hw1). It is shown that the mode with frequency w3 can localize in a squeezed state in the region of very strong coupling between the interacting modes. It is shown that the modes with frequencies w1 and w2 localize in states that are a statistical mixtures of Fock states regardless of the value of the coupling coefficient.
26

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.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 and densities typical for dense liquid layers of compact degenerate stars. We do not rely on various quasiclassic approximations widely used in the literature, such as factoring-out the tunneling process, tunneling in an average spherically symmetric mean-force potential, usage of classic free energies and pair correlation functions, linear mixing rule and so on. In general, a good agreement with earlier results from the thermonuclear limit to Γ ∼ 100 is found. For a very strongly coupled liquid 100 ≲ Γ ≤ 175, a deviation from currently used parametrisations of the reaction rates is discovered and approximated by a simple analytic expression. The developed method of nuclear reaction rate calculations with account of plasma screening can be extended to ion mixtures and crystallised phases of stellar matter.
27

LeBlanc, Matt, Benjamin Nachman, and Christof Sauer. "Going off topics to demix quark and gluon jets in αS extractions." Journal of High Energy Physics 2023, no. 2 (February 15, 2023). http://dx.doi.org/10.1007/jhep02(2023)150.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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, as this fraction is degenerate with the value of αS for the most well-understood observables. To overcome this limitation, we apply recently proposed techniques to statistically demix multiple mixtures of jets and obtain purified quark and gluon distributions based on an operational definiton. We illustrate that studying quark and gluon jet substructure separately can significantly improve the sensitivity of such extractions of the strong coupling. We also discuss how using machine learning techniques or infrared- and collinear-unsafe information can improve the demixing performance without the loss of theoretical control. While theoretical research is required to connect the extract topics with the quark and gluon objects in cross section calculations, our study illustrates the potential of demixing to reduce the dominant uncertainty for the αS extraction from jet substructure at the LHC.
28

Hu, Hui, Xia-Ji Liu, and Michele Modugno. "Expansion of a quantum degenerate boson-fermion mixture." Physical Review A 67, no. 6 (June 30, 2003). http://dx.doi.org/10.1103/physreva.67.063614.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

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 (July 22, 2011). http://dx.doi.org/10.1103/physreva.84.011606.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

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 (October 20, 2005). http://dx.doi.org/10.1103/physrevlett.95.170408.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Hadzibabic, Z., C. A. Stan, K. Dieckmann, S. Gupta, M. W. Zwierlein, A. Görlitz, and W. Ketterle. "Two-Species Mixture of Quantum Degenerate Bose and Fermi Gases." Physical Review Letters 88, no. 16 (April 4, 2002). http://dx.doi.org/10.1103/physrevlett.88.160401.

Full text
APA, Harvard, Vancouver, ISO, and other styles
32

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 (March 29, 2023). http://dx.doi.org/10.1103/physreva.107.l031306.

Full text
APA, Harvard, Vancouver, ISO, and other styles
33

Cao, Jin, Huan Yang, Zhen Su, Xin-Yao Wang, Jun Rui, Bo Zhao, and Jian-Wei Pan. "Preparation of a quantum degenerate mixture of Na23K40 molecules and K40 atoms." Physical Review A 107, no. 1 (January 17, 2023). http://dx.doi.org/10.1103/physreva.107.013307.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

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.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 mixture is loaded into a large volume optical dipole trap where $^{23}$Na atoms are immediately transferred to $|1,1\rangle$ for further effective cooling to avoid the strong three-body loss between $^{23}$Na atoms in $|2,2\rangle$ and $^{40}$K atoms in $|9/2,9/2\rangle$. At the end of the evaporation in optical trap, a degenerate Fermi gas of $^{40}$K with 1.9$\times10^{5}$ atoms at $T/T_{F}$=0.5 in the $|9/2,9/2\rangle$ hyperfine state coexists with a Bose-Einstein condensate (BEC) of $^{23}$Na with 8$\times10^{4}$ atoms in the $|1,1\rangle$ hyperfine state at 300 nK. We also can produce the two species mixture with the tunable population imbalance by adjusting the $^{23}$Na magneto-optical trap loading time.
35

Rakshit, Debraj, Tomasz Karpiuk, Miroslaw Brewczyk, and Mariusz Gajda. "Quantum Bose-Fermi droplets." SciPost Physics 6, no. 6 (June 28, 2019). http://dx.doi.org/10.21468/scipostphys.6.6.079.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 three-body collisions.
36

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 (February 1, 2002). http://dx.doi.org/10.1103/physrevlett.88.070408.

Full text
APA, Harvard, Vancouver, ISO, and other styles
37

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 (January 4, 2008). http://dx.doi.org/10.1103/physrevlett.100.010401.

Full text
APA, Harvard, Vancouver, ISO, and other styles
38

Park, Jee Woo, Cheng-Hsun Wu, Ibon Santiago, Tobias G. Tiecke, Sebastian Will, Peyman Ahmadi, and Martin W. Zwierlein. "Quantum degenerate Bose-Fermi mixture of chemically different atomic species with widely tunable interactions." Physical Review A 85, no. 5 (May 9, 2012). http://dx.doi.org/10.1103/physreva.85.051602.

Full text
APA, Harvard, Vancouver, ISO, and other styles
39

Miao, Jie, Guoqi Bian, Biao Shan, Liangchao Chen, Zengming Meng, Pengjun Wang, Lianghui Huang, and Jing Zhang. "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.

Full text
APA, Harvard, Vancouver, ISO, and other styles
Abstract:
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 number and density of $^{87}$Rb and $^{40}$K atoms after evaporative cooling in the hybrid magnetic trap with dark MOT loading are compared with bright MOT. The atoms with large number and high density make it easier to realize the quantum degenerate of Bose-Fermi mixture.
40

Yip, S. K. "Comment on “Phonon Spectrum and Dynamical Stability of a Dilute Quantum Degenerate Bose-Fermi Mixture”." Physical Review Letters 90, no. 17 (May 2, 2003). http://dx.doi.org/10.1103/physrevlett.90.178901.

Full text
APA, Harvard, Vancouver, ISO, and other styles

To the bibliography