Mavrogordatos, T;
Barratt, F;
Asari, U;
Szafulski, P;
Ginossar, E;
Szymanska, M;
(2018)
Rare quantum metastable states in the strongly dispersive Jaynes-Cummings oscillator.
Physical Review A
, 97
(3)
, Article 033828. 10.1103/PhysRevA.97.033828.
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Abstract
We present evidence of metastable rare quantum-fluctuation switching for the driven dissipative Jaynes-Cummings oscillator coupled to a zero-temperature bath in the strongly dispersive regime. We show that single-atom complex amplitude bistability is accompanied by the appearance of a low-amplitude long-lived transient state, hereinafter called the “dark state”, having a distribution with quasi-Poissonian statistics both for the coupled qubit and cavity mode. We find that the dark state is linked to a spontaneous flipping of the qubit state, detuning the cavity to a low-photon response. The appearance of the dark state is correlated with the participation of the two metastable states in the dispersive bistability, as evidenced by the solution of the master equation and single quantum trajectories.
| Type: | Article |
|---|---|
| Title: | Rare quantum metastable states in the strongly dispersive Jaynes-Cummings oscillator |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.97.033828 |
| Publisher version: | https://doi.org/10.1103/PhysRevA.97.033828 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Dark state, dispersive regime, complex amplitude bistability |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10045440 |
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