Time-reversal operation of tunneling dynamics of Bose-Einstein condensates in optical lattices
Year: 2008
Type: article
Abstract: We propose schemes that can perform perfect time-reversal operation of the tunneling dynamics of Bose-Einstein condensates in optical lattices. One of the time-reversal schemes is to reverse the sign of the tunneling coefficient by a time-periodic potential, maintaining its magnitude at a constant value. The other scheme utilizes a staggered $0\text{\ensuremath{-}}\ensuremath{\pi}$ phase imprinting on the optical lattices. If the reversal of the tunneling coefficient or the phase imprinting is performed at $\ensuremath{\tau}={\ensuremath{\tau}}_{p}$, the initial distribution of the condensates is regained at $\ensuremath{\tau}=2{\ensuremath{\tau}}_{p}$. Although the nonlinear interatomic interaction deteriorates the fidelity of the time-reversal operation, if the sign of the nonlinearity is reversed simultaneously with the phase imprinting at $\ensuremath{\tau}={\ensuremath{\tau}}_{p}$, the time-reversal operation at $\ensuremath{\tau}=2{\ensuremath{\tau}}_{p}$ becomes nearly perfect.
Source: Physical Review A
Institution: Hiroshima Institute of Technology
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1964770939