Purity oscillations in coupled Bose-Einstein condensates
arXiv:1905.11671 · doi:10.1103/PhysRevA.100.063605
Abstract
It is shown that the distinct oscillations of the purity of the single-particle density matrix for many-body open quantum systems with balanced gain and loss reported by Dast et al. [Phys. Rev. A 93, 033617 (2016)] can also be found in closed quantum systems of which subsystems experience a gain and loss of particles. This is demonstrated with two different lattice setups for cold atoms, viz. a ring of six lattice sites with periodic boundary conditions and a linear chain of four lattice wells. In both cases pronounced purity oscillations are found, and it is shown that they can be made experimentally accessible via the average contrast in interference experiments.
arXiv commentminor additions in the text, new references, 7 pages, 8 figures
References in corpus (28)
- Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
- Nonreciprocal light transmission in parity-time-symmetric whispering-gallery microcavities
- PT-Symmetric Quantum Mechanics
- Dynamically encircling exceptional points in a waveguide: asymmetric mode switching from the breakdown of adiabaticity
- Visualization of Branch Points in PT-Symmetric Waveguides
- Experimental Study of Active LRC Circuits with PT-Symmetries
- Quantum state tomography across the exceptional point in a single dissipative qubit
- PT symmetry and spontaneous symmetry breaking in a microwave billiard
- A non-Hermitian symmetric Bose-Hubbard model: eigenvalue rings from unfolding higher-order exceptional points
- Information Retrieval and Criticality in Parity-Time-Symmetric Systems
- Observation of critical phenomena in parity-time-symmetric quantum dynamics
- Quantum noise and self-sustained radiation of PT-symmetric systems
- Quantum Classical Correspondence for a non-Hermitian Bose-Hubbard Dimer
- Exact solution for Morse oscillator in PT-symmetric quantum mechanics
- Dissipation induced coherence of a two-mode Bose-Einstein condensate
- Collective modes, chaotic behavior and self-trapping in the dynamics of three coupled Bose-Einstein condensates
- Hermitian four-well potential as a realization of a PT-symmetric system
- Ordinary versus PT-symmetric quantum field theory
- Tilted optical lattices with defects as realizations of PT symmetry in Bose-Einstein condensates
- Scattering Experiments with Microwave Billiards at an Exceptional Point under Broken Time Reversal Invariance
- Application of Pseudo-Hermitian Quantum Mechanics to a Complex Scattering Potential with Point Interactions
- Purity oscillations in Bose-Einstein condensates with balanced gain and loss
- Bose-Einstein condensates with balanced gain and loss beyond mean-field theory
- Quantum and Classical Statistical Mechanics of a Class of non-Hermitian Hamiltonians
- Fano resonances in scattering: an alternative perspective
- Supersymmetric model of a Bose-Einstein condensate in a -symmetric double-delta trap
- Stationary states in the many-particle description of Bose-Einstein condensates with balanced gain and loss
- Astrophysical Evidence for the Non-Hermitian but -symmetric Hamiltonian of Conformal Gravity