Feedback-induced instabilities and dynamics in the Jaynes-Cummings model
- URL: http://arxiv.org/abs/2006.11535v1
- Date: Sat, 20 Jun 2020 10:07:01 GMT
- Title: Feedback-induced instabilities and dynamics in the Jaynes-Cummings model
- Authors: Nikolett N\'emet, Scott Parkins, Victor Canela, Alexander Carmele
- Abstract summary: We investigate the coherence and steady-state properties of the Jaynes-Cummings model subjected to time-delayed coherent feedback.
The introduced feedback qualitatively modifies the dynamical response and steady-state quantum properties of the system.
- Score: 62.997667081978825
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We investigate the coherence and steady-state properties of the
Jaynes-Cummings model subjected to time-delayed coherent feedback in the regime
of multiple excitations. The introduced feedback qualitatively modifies the
dynamical response and steady-state quantum properties of the system by
enforcing a non-Markovian evolution. This leads to recovered collapses and
revivals as well as non-equilibrium steady states when the two-level system
(TLS) is directly driven by a laser. The latter are characterized by narrowed
spectral linewidth and diverging correlation functions that are robust against
the time delay and feedback phase choices. These effects are also demonstrated
in experimentally accessible quantities such as the power spectrum and the
second-order correlation function $g^{(2)}(\tau)$ in standard and widely
available photon-detection setups.
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