Spontaneous emission control of single quantum dots by electromechanical tuning of a photonic crystal cavity
arXiv:1207.2980 · doi:10.1063/1.4748302
Abstract
We demonstrate the control of the spontaneous emission rate of single InAs quantum dots embedded in a double-membrane photonic crystal cavity by the electromechanical tuning of the cavity resonance. Controlling the separation between the two membranes with an electrostatic field we obtain the real-time spectral alignment of the cavity mode to the excitonic line and we observe an enhancement of the spontaneous emission rate at resonance. The cavity has been tuned over 13 nm without shifting the exciton energies. A spontaneous emission enhancement of 4.5 has been achieved with a coupling efficiency of the dot to the mode 92%.
4 pages, 3 figures
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- On-chip nanomechanical filtering of quantum-dot single-photon sources
- All-optical dynamic modulation of spontaneous emission rate in hybrid optomechanical cavity quantum electrodynamics systems
- Spin-photon Qubits for Scalable Quantum Network