Demonstration and modelling of time-bin entangled photons from a quantum dot in a nanowire

Abstract

Resonant excitation of the biexciton state in an InAsP quantum dot by a phase-coherent pair of picosecond pulses allows preparing time-bin entangled pairs of photons via the biexciton-exciton cascade. We show that this scheme can be implemented for a dot embedded in an InP nanowire. The underlying physical mechanisms can be represented and quantitatively analyzed by an effective three-level open system master equation. Simulation parameters including decay and intensity dependent dephasing rates are extracted from experimental data, which in turn let us predict the resulting entanglement and optimal operating conditions.

References in corpus (5)

• Bright single-photon sources in bottom-up tailored nanowires
• On-demand semiconductor source of entangled photons which simultaneously has high fidelity, efficiency, and indistinguishability
• Observation of strongly entangled photon pairs from a nanowire quantum dot
• Polarization entangled photons from quantum dots embedded in nanowires
• Multiplexed Single Photons from Deterministically Positioned Nanowire Quantum Dots

Cited by in corpus (8)

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• Review of Distributed Quantum Computing. From single QPU to High Performance Quantum Computing
• Energy-time and time-bin entanglement: past, present and future
• Time-bin entanglement in the deterministic generation of linear photonic cluster states
• Theory of time-bin entangled photons from quantum emitters
• Photonic quantum information with time-bins: Principles and applications
• Indistinguishable photons from a two-photon cascade
• The surprising persistence of time-dependent quantum entanglement