Real time $g^{(2)}$ monitoring at 100 kHz

Abstract

We introduce a technique to determine photon correlations of optical light fields in real time. The method is based on ultrafast phase-randomized homodyne detection and allows us to follow the temporal evolution of the second-order correlation function $g^{(2)}(0)$ of a light field. We demonstrate the capabilities of our approach by applying it to a laser diode operated in the threshold region. In particular, we are able to monitor the emission dynamics of the diode switching back and forth between lasing and spontaneous emission with a $g^{(2)}(0)$-sampling rate of 100 kHz.

arXiv comment9 pages, 4 figures

References in corpus (8)

• Continuous-variable optical quantum state tomography
• Theory of frequency-filtered and time-resolved N-photon correlations
• Accessing higher order correlations by time-multiplexing
• Versatile Wideband Balanced Detector for Quantum Optical Homodyne Tomography
• Intensity fluctuations in bimodal micropillar lasers enhanced by quantum-dot gain competition
• Temporally resolved second-order photon correlations of exciton-polariton Bose-Einstein condensate formation
• Ultrasensitive N-photon interferometric autocorrelator
• Second-order coherence properties of amplified spontaneous emission from a high-power tapered superluminescent diode

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• High-speed photon correlation monitoring of amplified quantum noise by chaos using deep-learning balanced homodyne detection
• Conditional Spectroscopy via Non-Stationary Optical Homodyne Quantum State Tomography
• Quantum coherence of a long-lifetime exciton-polariton condensate