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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Higher-order photon bunching in a semiconductor microcavity.

M Assmann¹, F Veit, M Bayer

¹Experimentelle Physik II, Technische Universität Dortmund, D-44221 Dortmund, Germany.

Science (New York, N.Y.)

|July 18, 2009

Summary

This summary is machine-generated.

We observed photon bunching in strong coupling regimes of semiconductor microcavities. This quantum collective behavior vanishes in the weak coupling regime, confirming thermal light predictions.

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Area of Science:

Quantum optics
Solid-state physics
Semiconductor microcavities

Background:

Quantum mechanically indistinguishable particles, like photons, exhibit collective behavior.
Describing light fields requires considering photon assemblies, not just independent particles.

Purpose of the Study:

Investigate multiphoton correlations in semiconductor microcavity emission.
Quantify few-photon bunching in light pulses with high time resolution.

Main Methods:

Studied single-mode emission from a semiconductor microcavity.
Analyzed multiphoton correlations up to fourth order.
Recorded photon counting statistics with picosecond time resolution.

Main Results:

Observed photon bunching in the strong coupling regime.
Photon bunching diminished in the weak coupling regime as the cavity began lasing.
Verified the n factorial prediction for zero-delay correlation functions of thermal light photons.

Conclusions:

Collective photon behavior is crucial for describing light fields.
Coupling regimes in microcavities significantly influence photon correlations.
Experimental results align with theoretical predictions for thermal light.