Optimizing photon indistinguishability in the emission from incoherently-excited semiconductor quantum dots

Abstract

Most optical quantum devices require deterministic single-photon emitters. Schemes so far demonstrated in the solid state imply an energy relaxation which tends to spoil the coherent nature of the time evolution, and with it the photon indistinguishability. We focus our theoretical investigation on semiconductor quantum dots embedded in microcavities. Simple and general relations are identified between the photon indistinguishability and the collection efficiency. The identification of the key parameters and of their interplay provides clear indications for the device optimization.

References in corpus (4)

• Triggered single photons from a quantum dot
• Quantum dot single photon sources: Prospects for applications in linear optics quantum information processing
• Nonclassical radiation from diamond nanocrystals
• Dynamics of the excitations of a quantum dot in a microcavity

Cited by in corpus (8)

• On-demand generation of indistinguishable polarization-entangled photon pairs
• Phonon-assisted robust and deterministic two-photon biexciton preparation in a quantum dot
• Quantum-tomography of entangled photon pairs by quantum-dot cascade decay
• Distilling one, two and entangled pairs of photons from a quantum dot with cavity QED effects and spectral filtering
• Microscopic theory of indistinguishable single-photon emission from a quantum dot coupled to a cavity: The role of non-Markovian phonon-induced decoherence
• Phonon-assisted decoherence in the production of polarization-entangled photons in a single semiconductor quantum dot
• Two-photon interference from a quantum dot--microcavity: Persistent pure-dephasing and suppression of time-jitter
• Continuous monitoring can improve indistinguishability of a single-photon source