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We show that integrating waveguides in photonic crystal cavities coupled to quantum dots leads to highly efficient optical nonlinear effects at low photon numbers. Semiconductor quantum dots coupled to photonic crystal cavities provide a platform where large optical nonlinearities can be observed near the single photon level [1,2]. Coupling photonic crystal cavities to a waveguide allows for efficient...
Semiconductor quantum dots (QDs) coupled to high quality optical microcavities provide essential components for solid state cavity quantum electrodynamics systems. Indium Arsenide (InAs) QDs are one of the most promising candidates for quantum emitters due to their discrete density of states and high oscillator strength. When they are combined with small mode volume and high quality microcavities,...
We apply a magnetic field to photonic crystal cavity devices with embedded Indium Arsenide (InAs) quantum dots (QDs), and demonstrate strong coupling between individual QD exciton spin states and a photonic crystal cavity.
We demonstrate reversible tuning of photonic-crystal cavity resonance by 2.7nm using a photochromic film of spiropyran. Exposure of spiropyran to ultraviolet light redshifts the cavity resonance that can be reversed by exposure to visible light.
A protocol is presented for generating entanglement between spatially separated quantum dots with different emission wavelengths and radiative lifetimes. This protocol can be practically implemented in semiconductor systems where emitters suffer from large inhomogeneous broadening.
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