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arXiv · 1203.6044

All-optical tuning of a quantum dot in a coupled cavity system

Ranojoy Bose·Tao Cai·Glenn. S. Solomon·Edo Waks
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Abstract

We demonstrate a method of tuning a semiconductor quantum dot (QD) onto resonance with a cavity mode all-optically. We use a system comprised of two evanescently coupled cavities containing a single QD. One resonance of the coupled cavity system is used to generate a cavity enhanced optical Stark shift, enabling the QD to be resonantly tuned to the other cavity mode. A twenty-seven fold increase in photon emission from the QD is measured when the off-resonant QD is Stark shifted into the cavity mode resonance, which is attributed to radiative enhancement of the QD. A maximum tuning of 0.06 nm is achieved for the QD at an incident power of 88 {\mu}W.

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Ranojoy Bose, Tao Cai, Glenn. S. Solomon, Edo Waks. 2012-03-27. All-optical tuning of a quantum dot in a coupled cavity system. https://doi.org/10.1063/1.4719065

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