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S-wave quantum entanglement in a harmonic trap

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arxiv quant-ph/0503020 v2 pith:5S7TX37D submitted 2005-03-02 quant-ph

classification quant-ph
keywords entanglementquantums-waveatomsharmonictrapanalyzedecomposition
verification ladder T0 review T1 audit T2 compute T3 formal
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We analyze the quantum entanglement between two interacting atoms trapped in a spherical harmonic potential. At ultra-cold temperature, ground state entanglement is generated by the dominated s-wave interaction. Based on a regularized pseudo-potential Hamiltonian, we examine the quantum entanglement by performing the Schmidt decomposition of low-energy eigenfunctions. We indicate how the atoms are paired and quantify the entanglement as a function of a modified s-wave scattering length inside the trap.

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