On-chip deterministic operation of quantum dots in dual-mode waveguides for a plug-and-play single-photon source

Abstract

A deterministic source of coherent single photons is an enabling device of quantum-information processing for quantum simulators, and ultimately a full-fledged quantum internet. Quantum dots (QDs) in nanophotonic structures have been employed as excellent sources of single photons, and planar waveguides are well suited for scaling up to multiple photons and emitters exploring near-unity photon-emitter coupling and advanced active on-chip functionalities. An ideal single-photon source requires suppressing noise and decoherence, which notably has been demonstrated in electrically-contacted heterostructures. It remains a challenge to implement deterministic resonant excitation of the QD required for generating coherent single photons, since residual light from the excitation laser should be suppressed without compromising source efficiency and scalability. Here, we present the design and realization of a novel planar nanophotonic device that enables deterministic pulsed resonant excitation of QDs through the waveguide. Through nanostructure engineering, the excitation light and collected photons are guided in two orthogonal waveguide modes enabling deterministic operation. We demonstrate a coherent single-photon source that simultaneously achieves high-purity ($g^{(2)}(0)$ = 0.020 $\pm$ 0.005), high-indistinguishability ($V$ = 96 $\pm$ 2 %), and $>$80 % coupling efficiency into the waveguide. The novel `plug-and-play' coherent single-photon source could be operated unmanned for several days and will find immediate applications, e.g., for constructing heralded multi-photon entanglement sources for photonic quantum computing or sensing.

arXiv comment12 pages, 10 figures

References in corpus (32)

• Quantum Cryptography
• The Quantum Internet
• Quantum Simulation
• Integrated Photonic Quantum Technologies
• Near optimal single photon sources in the solid state
• Universal Linear Optics
• Photonic quantum information processing: a review
• Near-unity coupling efficiency of a quantum emitter to a photonic-crystal waveguide
• All photonic quantum repeaters
• Boson sampling with 20 input photons in 60-mode interferometers at $10^{14}$ state spaces
• Towards optimal single-photon sources from polarized microcavities
• High Purcell factor generation of coherent on-chip single photons
• On-demand generation of background--free single photons from a solid-state source
• Transform-limited single photons from a single quantum dot
• A gated quantum dot far in the strong-coupling regime of cavity-QED at optical frequencies
• Near Transform-Limited Single Photons from an Efficient Solid-State Quantum Emitter
• Scalable in operando strain tuning in nanophotonic waveguides enabling three-quantum dot superradiance
• Indistinguishable and efficient single photons from a quantum dot in a planar nanobeam waveguide
• Quantum interference of electromechanically stabilized emitters in nanophotonic devices
• Coherently driving a single quantum two-level system with dichromatic laser pulses
• Quantum optics with near lifetime-limited quantum-dot transitions in a nanophotonic waveguide
• Device-independent quantum key distribution with single-photon sources
• Resonant excitonic emission of a single quantum dot in the Rabi regime
• Nanomechanical single-photon routing
• High-Efficiency Shallow-Etched Grating on GaAs Membranes for Quantum Photonic Applications
• Narrow optical linewidths and spin pumping on charge-tunable, close-to-surface self-assembled quantum dots in an ultra-thin diode
• Pulsed Rabi oscillations in quantum two-level systems: beyond the Area Theorem
• Frequency stabilization of the zero-phonon line of a quantum dot via phonon-assisted active feedback
• Numerical modelling of the coupling efficiency of single quantum emitters in photonic-crystal waveguides
• Suppressing phonon decoherence of high performance single-photon sources in nanophotonic waveguides
• A wave-function ansatz method for calculating field correlations and its application to the study of spectral filtering and quantum dynamics of multi-emitter systems
• Suspended Spot-Size Converters for Scalable Single-Photon Devices

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