Photon emission by nanocavity-enhanced quantum anti-Zeno effect in solid-state cavity quantum-electrodynamics.
Photon emission by nanocavity-enhanced quantum anti-Zeno effect in solid-state cavity quantum-electrodynamics.
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DOI：
10.1364/oe.16.018067
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发表时间：
2008-10
期刊：
影响因子：
3.8
通讯作者：
M. Yamaguchi;T. Asano;S. Noda
中科院分区：
文献类型：
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作者：
M. Yamaguchi;T. Asano;S. Noda
固态腔量子电动力学（QED）由于纳米腔和量子点（QD）耦合系统的发展而具有巨大的潜力。这些系统涉及两种光子发射机制：弱耦合区的珀塞尔效应和强耦合区的真空拉比分裂。在本文中，我们描述了第三种发射机制的基础上的量子反芝诺效应（阿泽）诱导的纯退相的量子点。这通过纳米腔的固有特性显著增强。这种机制解释了强光子发射的起源，在腔模式很大程度上从量子点失谐，以前被认为是一个违反直觉的，初步看来非节能，光发射现象。这些发现有助于控制固态腔QED的衰变和发射特性，并有助于开发固态量子器件。
Solid-state cavity quantum-electrodynamics (QED) has great potential owing to advances such as coupled systems combining a nanocavity and a quantum dot (QD). These systems involve two photon-emission mechanisms: the Purcell effect in the weak coupling regime and vacuum Rabi-splitting in the strong coupling regime. In this paper, we describe a third emission mechanism based on the quantum anti-Zeno effect (AZE) induced by the pure-dephasing in a QD. This is significantly enhanced by the inherent characteristics of the nanocavity. This mechanism explains the origin of strong photon emission at a cavity mode largely detuned from a QD, previously considered a counterintuitive, prima facie non-energy-conserving, light-emission phenomenon. These findings could help in controlling the decay and emission characteristics of solid-state cavity QED, and developing solid-state quantum devices.