Atomic number fluctuations in a mixture of two spinor condensates

Abstract

We study particle number fluctuations in the quantum ground states of a mixture of two spin-1 atomic condensates when the interspecies spin-exchange coupling interaction $c_{12}\beta$ is adjusted. The two spin-1 condensates forming the mixture are respectively ferromagnetic and polar in the absence of an external magnetic (B-) field. We categorize all possible ground states using the angular momentum algebra and compute their characteristic atom number fluctuations, focusing especially on the the AA phase (when $c_{12}\beta >0$), where the ground state becomes fragmented and atomic number fluctuations exhibit drastically different features from a single stand alone spin-1 polar condensate. Our results are further supported by numerical simulations of the full quantum many-body system.

5 pages, 2 figures, in press PRA

References in corpus (11)

• Spontaneous symmetry breaking in a quenched ferromagnetic spinor Bose condensate
• Tuning the scattering length with an optically induced Feshbach resonance
• Double species condensate with tunable interspecies interactions
• Fragmentation of Bose-Einstein Condensates
• Discrete symmetries and 1/3-quantum vortices in condensates of F=2 cold atoms
• Photoassociation spectroscopy of a Spin-1 Bose-Einstein condensate
• Ground states of spin-3 Bose-Einstein condensates for conserved magnetization
• Bose-Einstein Condensation with Entangled Order Parameter
• A binary mixture of spinor atomic Bose-Einstein condensates
• Localization of spin mixing dynamics in a spin-1 Bose-Einstein condensate
• Quantum states of a binary mixture of spinor Bose-Einstein condensates

Cited by in corpus (11)

• Ground-state phases of a mixture of spin-1 and spin-2 Bose-Einstein condensates
• Spontaneously axisymmetry breaking phase in a binary mixture of spinor Bose-Einstein condensates
• Interspecies singlet pairing in a mixture of two spin-1 Bose condensates
• Quantum entangled ground states of two spinor Bose-Einstein condensates
• Quantum spin mixing in a binary mixture of spin-1 atomic condensates
• Density-functional theory for the spin-1 bosons in a one-dimensional harmonic trap
• Resonant Spin Exchange between Heteronuclear Atoms Assisted by Periodic Driving
• Magnetization Oscillation of a Spinor Condensate Induced by Magnetic Field Gradient
• Fragmentation of a spin-1 mixture in a magnetic field
• Phase separation and metastability in a mixture of spin-1 and spin-2 Bose-Einstein condensates
• Phase diagrams of spin-2 Floquet spinor Bose-Einstein condensates