Buonaiuto, G., Whittaker, D.M. and Cancellieri, E. (2018) Conservation of Quantum Correlations in Multimode Systems with U(1) Symmetry. Physical Review Letters, 121 (2). 020404. ISSN 0031-9007
Abstract
We present a theoretical investigation of the properties of quantum correlation functions in a multimode system. We define a total m th order equal-time correlation function, summed over all modes, which is shown to be conserved if the Hamiltonian possesses U(1) symmetry. It is also conserved in the presence of dissipation, provided the loss rate is the same for all modes of the system. As examples, we demonstrate this conservation using numerical simulations of a coupled cavity system and the Jaynes-Cummings model.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 01 Nov 2018 10:14 |
Last Modified: | 01 Nov 2018 10:14 |
Published Version: | https://doi.org/10.1103/PhysRevLett.121.020404 |
Status: | Published |
Publisher: | American Physical Society |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevLett.121.020404 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:137996 |