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We demonstrate the coherent creation of a biexciton in an InAs/GaAs quantum dot embedded in a planar microcavity through resonant two-photon excitation. This results in laser scattering-free cascaded single photons with excellent two-photon suppression. We also observe Rabi oscillations, Ramsey interference and high indistinguishability. This scheme can be used to generate entangled photon pairs and...
We present the studies on the development of InAs/GaAs quantum-dot lasers monolithically grown on Si for Si photonics. Room-temperature lasing near 1.3 µm has been demonstrated for the devices on Si and Ge substrates.
Entangled photons are essential for scalable optical quantum communication and processing. We demonstrate electrical generation of entangled light using a quantum dot within an LED, and interactions between entangled photons by two-photon-interference.
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