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Journal Articles Optics Letters Year : 2019

Second-order photon correlation measurement with picosecond resolution using frequency upconversion

Aymeric Delteil
Chun Tat Ngai
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Thomas Fink
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Abstract

The second-order correlation function of light g (2) (τ) constitutes a pivotal tool to quantify the quantum behavior of an emitter and in turn its potential for quantum information applications. The experimentally accessible time resolution of g (2) (τ) is usually limited by the jitter of available single photon detectors. Here, we present a versatile technique allowing to measure g (2) (τ) from a large variety of light signals with a time resolution given by the pulse length of a mode-locked laser. The technique is based on frequency upconversion in a nonlinear waveguide, and we analyze its properties and limitations by modeling the pulse propagation and the frequency conversion process. We measure g (2) (τ) from various signals including light from a quantum emitter-a confined exciton-polariton structure-revealing its quantum signatures at a scale of a few picoseconds and demonstrating the capability of the technique.
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Dates and versions

hal-02409358 , version 1 (13-12-2019)

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Aymeric Delteil, Chun Tat Ngai, Thomas Fink, Ataç İmamoğlu. Second-order photon correlation measurement with picosecond resolution using frequency upconversion. Optics Letters, 2019, 44 (15), pp.3877. ⟨10.1364/OL.44.003877⟩. ⟨hal-02409358⟩
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