Miscibility regimes in a ${}^{23}$Na-${}^{39}$K quantum mixture

Abstract

Effects of miscibility in interacting two-component classical fluids are relevant in a broad range of daily applications. When considering quantum systems, two-component Bose-Einstein condensates provides a well controlled platform where the miscible-immiscible phase transition can be completely characterized. In homogeneous systems, this phase transition is governed only by the competition between intra- and inter-species interactions. However in more conventional experiments dealing with trapped gases, the pressure of the confinement increases the role of the kinetic energy and makes the system more miscible. In the most general case, the miscibility phase diagram of unbalanced mixtures of different atomic species is strongly modified by the atom number ratio and the different gravitational sags. Here, we numerically investigate the ground-state of a ${}^{23}$Na-${}^{39}$K quantum mixture for different interaction strengths and atom number ratios considering realistic experimental parameters. Defining the spatial overlap between the resulting atomic clouds, we construct the phase diagram of the miscibility transition which could be directly measured in real experiments.

18 pages, 6 figures

References in corpus (13)

• Quantum liquid droplets in a mixture of Bose-Einstein condensates
• Dual-Species Bose-Einstein Condensate of ${}^{87}$Rb and ${}^{133}$Cs
• Observation of Efimov Resonances in a Mixture with Extreme Mass Imbalance
• Feshbach resonances in ultracold K(39)
• Tuning of heteronuclear interactions in a quantum-degenerate Fermi-Bose mixture
• Modulation instability and solitary wave formation in two-component Bose-Einstein condensates
• Self-trapping of impurities in Bose-Einstein condensates: Strong attractive and repulsive coupling
• Binary Quantum Turbulence Arising from Countersuperflow Instability in Two-Component Bose-Einstein Condensates
• Controlling phase separation of a two-component Bose-Einstein condensate by confinement
• Parametrically excited star-shaped patterns at the interface of binary Bose-Einstein condensates
• The mixing-demixing phase diagram of ultracold heteronuclear mixtures in a ring trimer
• The Miscible-Immiscible Quantum Phase Transition in Coupled Two-Component Bose-Einstein Condensates in 1D Optical Lattices
• A compact experimental machine for studying tunable Bose-Bose superfluid mixtures

Cited by in corpus (1)

• Miscibility of Binary Bose-Einstein Condensates with $p$-wave Interaction