On-Demand Single Photons with High Extraction Efficiency and Near-Unity Indistinguishability from a Resonantly Driven Quantum Dot in a Micropillar

Abstract

Scalable photonic quantum technologies require on-demand single-photon sources with simultaneously high levels of purity, indistinguishability, and efficiency. These key features, however, have only been demonstrated separately in previous experiments. Here, by s-shell pulsed resonant excitation of a Purcell-enhanced quantum dot-micropillar system, we deterministically generate resonance fluorescence single photons which, at pi pulse excitation, have an extraction efficiency of 66%, single-photon purity of 99.1%, and photon indistinguishability of 98.5%. Such a single-photon source for the first time combines the features of high efficiency and near-perfect levels of purity and indistinguishabilty, and thus open the way to multi-photon experiments with semiconductor quantum dots.

arXiv commentsubmitted to PRL on 29/09/2015, accepted on 01/12/2015, published on 14/01/2016, the first work reporting an "all-around" single-photon source that combines purity, indistinguishability, and efficiency. see https://aps.altmetric.com/details/4994109

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• Charging of a Single InAs QD with Electrically-Injected Holes using a Lateral Electric Field
• Sparse interferometry for measuring multiphoton collective phase
• Convert laser light into single photons via interference
• Effects of coupling strength of the electron-photon and the photon-environment interactions on the electron transport through multiple-resonances of a double quantum dot system in a photon cavity
• Lifetimes and quantum efficiencies of quantum dots deterministically positioned in photonic-crystal waveguides
• Semi-Deterministic Quantum Dot Placement in Heteroepitaxy
• The origin and influence of non-cavity modes in a micropillar Bragg microcavity
• Mechanisms and Opportunities for Tunable High-Purity Single Photon Emitters: A Review of Hybrid Perovskites and Prospects for Bright Squeezed Vacuum
• Localized all-optical control of single semiconductor quantum dots through plasmon-polariton-induced screening
• An ultrafast polarised single photon source at 220 K
• Controlling and measuring a superposition of position and momentum
• Few-particle scattering from localized quantum systems in spatially structured bosonic baths
• Implementation of a quantum controlled-SWAP gate with photonic circuits
• Quantum state transfer between a frequency-encoded photonic qubit and a quantum dot spin in a nanophotonic waveguide
• Photonic "hourglass" design beyond the standard bulk model of phonon decoherence
• Near-unity efficiency and photon indistinguishability for the "hourglass" single-photon source using suppression of background emission
• Using the Autler-Townes and ac Stark effects to optically tune the frequency of indistinguishable single-photons from an on-demand source
• Delay and polarization routing of single photons
• Single plasmon generation in an InAs/GaAs quantum dot in a transfer-printed plasmonic microring resonator
• Experimental and theoretical analyses of strongly polarized photon emission from non-polar InGaN quantum dots
• Quantifying electron-nuclear spin entanglement dynamics in central-spin systems using one-tangles
• Coupling hBN quantum emitters to 1D photonic crystal cavities
• A vapor-cavity-QED system for quantum computation and communication