Influence of phonon reservoir on photon blockade in a driven quantum dot-cavity system

Journal Article · Mon Mar 14 04:00:00 EDT 2016 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4943644· OSTI ID:22596874

Gao, Bo; Li, Gao-xiang ^[1]; Zhu, Jia-pei ^[2]

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1. Department of Physics, Huazhong Normal University, Wuhan 430079 (China)
2. Department of Physics, College of Science, Honghe University, Mengzi 661100 (China)

We theoretically investigate the influence of the phonon bath on photon blockade in a simultaneously driven dot-cavity system. An optimal condition for avoiding two-photon excitation of a cavity field is put forward which can be achieved by modulating the phase difference and the strengths of the driving fields. The second-order correlation function and the mean photon number of the cavity field are discussed. In the absence of phonon effect, the strong photon blockade in a moderate quantum dot (QD)-cavity coupling regime occurs, which can be attributed to the destructive quantum interference arisen from different transition paths induced by simultaneously driving the dressed QD-cavity system. The participation of acoustic-phonon reservoir produces new transition channels for the QD-cavity system, which leads to the damage of destructive interference. As a result, the photon blockade effect is hindered when taking the electron-phonon interaction into account. It is also found that the temperature of the phonon reservoir is disadvantageous for the generation of photon blockade.

• OSTI ID: 22596874
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 10 Vol. 119; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CAVITIES
CORRELATION FUNCTIONS
ELECTRON-PHONON COUPLING
EXCITATION
INTERFERENCE
PHONONS
PHOTONS
QUANTUM DOTS