Persistent current by a static non-Hermitian ratchet
- URL: http://arxiv.org/abs/2110.13773v2
- Date: Tue, 1 Mar 2022 04:10:41 GMT
- Title: Persistent current by a static non-Hermitian ratchet
- Authors: Guitao Lyu and Gentaro Watanabe
- Abstract summary: We propose a scheme to generate a persistent current in driven-dissipative systems.
The basic physics of our scheme is discussed by a simple discrete driven-dissipative GP model.
We demonstrate the experimental feasibility of our scheme to generate the persistent current in exciton-polariton condensates in a semiconductor microcavity.
- Score: 0.913755431537592
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We propose a scheme to generate a persistent current in driven-dissipative
systems which can be described by the generalized Gross-Pitaevskii (GP)
equation. Our proposal consists of fabricating a rachet-potential shape of the
loss-rate profile, which simultaneously breaks the time-reversal and
parity-inversion symmetry. Unlike existing schemes to generate a current using
a rachet potential in Hermitian systems, no dynamic drive is needed. The basic
physics of our scheme is discussed by a simple discrete driven-dissipative GP
model, and the results are also verified by a realistic continuous model.
Furthermore, we demonstrate the experimental feasibility of our scheme to
generate the persistent current in exciton-polariton condensates in a
semiconductor microcavity.
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