Imaginary Potential Induced Quantum Coherence for Bose-Einstein Condensates

Abstract

The role of complex potentials in single-body Schrődinger equation has been studied intensively. We study the quantum coherence for degenerate Bose gases in complex potentials, when the exchange symmetry of identical bosons is considered. For initially independent Bose-Einstein condensates, it is shown that even very weak imaginary potential can induce perfect quantum coherence between different condensates. The scheme to observe imaginary potential induced quantum coherence is discussed.

4 pages, 4 figures

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Cited by in corpus (3)

• Optical waveguide arrays: quantum effects and PT symmetry breaking
• Scaling behavior and phase diagram of a PT-symmetric non-Hermitian Bose-Hubbard system
• Disorder effects in tunable waveguide arrays with parity-symmetric tunneling