Atom-number squeezing and bipartite entanglement of two-component Bose–Einstein condensates: analytical results

2009/12/02 by Guangri Jin, G. R. Jin, X. W. Wang +5 · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Atom (system on chip) #Bipartite graph #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Combinatorics #Component (thermodynamics) #Josephson effect #Mathematics #Physics #Quantum #Quantum Information and Cryptography #Quantum entanglement #Quantum mechanics #Quantum, superfluid, helium dynamics #Superconductivity #cond-mat.quant-gas

paper · pdf · doi:10.1088/0953-4075/43/4/045301

published as J.Phys.B: At. Mol. Opt. Phys. 43 (2010)045301 · 9 pages, 3 figures

arxiv created 2009/12/02 · openalex publication_date 2010/01/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We investigate spin dynamics of a two-component Bose-Einstein condensates with weak Josephson coupling. Analytical expressions of atom-number squeezing and bipartite entanglement are presented for atom-atom repulsive interactions. For attractive interactions, there is no number squeezing; however, the squeezing parameter is still useful to recognize the appearance of Schr"odinger's cat state.

Citations

• Relative phase of two Bose-Einstein condensates
• Spin squeezing and reduced quantum noise in spectroscopy
• Many-body quantum coherence and interaction blockade in Josephson-linked Bose-Einstein condensates
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Interferometric detection of optical phase shifts at the Heisenberg limit
• Squeezed spin states
• Quantum Spin Dynamics of Mode-Squeezed Luttinger Liquids in Two-Component Atomic Gases
• Direct Observation of Sub-Poissonian Number Statistics in a Degenerate Bose Gas

Cited by

• Heisenberg operator approach for spin squeezing dynamics