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- W2726247914 abstract "We propose and analyze an effective scheme to enhance the optical higher-order sideband generation in a three-cavity array with local parity-time ($mathcal{PT}$) symmetry. In this three-cavity configuration, a single cavity containing a quantum dot (QD) is coupled to an assisted $mathcal{PT}$-symmetric combination of two cavities. Beyond the weak-excitation approximation, we derive the analytic formulas used to determine the nonlinear coefficient of the optical second-order sideband (OSS) by employing the perturbation technique. Using experimentally achievable parameters, we identify the conditions under which the assisted $mathcal{PT}$-symmetric double-cavity system allows us to modify the transmission of the probe field and improve the efficiency of OSS generation beyond what is achievable in a loss-only QD-cavity system. We examine the influence of the $mathcal{PT}$ phase transition from unbroken- to broken-$mathcal{PT}$ regimes on the OSS generation. It is found that the efficiency of optical second-order sideband generation can be significantly enhanced when the assisted double-cavity system is in $mathcal{PT}$-symmetric phase, extremely in the vicinity of the transition point. The present results illustrate the potential to utilize $mathcal{PT}$-symmetric physical systems for enhancing optical higher-order sidebands and controlling optical frequency combs, as well as to guide the design of experimental implementation." @default.
- W2726247914 created "2017-07-14" @default.
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- W2726247914 date "2017-07-05" @default.
- W2726247914 modified "2023-10-17" @default.
- W2726247914 title "Enhanced generation of higher-order sidebands in a single-quantum-dot–cavity system coupled to a <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi mathvariant=script>PT</mml:mi></mml:math> -symmetric double cavity" @default.
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- W2726247914 doi "https://doi.org/10.1103/physreva.96.013802" @default.
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