Tunable multi-photon correlations from a coherently driven quantum dot

Bracht, Thomas K., Clark, Rachel N., Androvitsaneas, Petros ORCID: https://orcid.org/0000-0001-5013-0282, Jordan, Matthew, Bishop, Samuel G., Dyte, Harry E., Cygorek, Moritz, Farrer, Ian A., Reiter, Doris E. and Bennett, Anthony J. ORCID: https://orcid.org/0000-0002-5386-3710 2026. Tunable multi-photon correlations from a coherently driven quantum dot. Optica Quantum 4 (3) , pp. 224-231. 10.1364/OPTICAQ.580658

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Abstract

Mixing the fields generated by different light sources has emerged as a powerful approach for engineering non-Gaussian quantum states. Understanding and controlling the resulting photon statistics is useful for emerging quantum technologies that are underpinned by interference. In this work, we investigate intensity correlation functions arising from the interference of resonance fluorescence from a quantum emitter with a coherent laser field. We show that the observed bunching behavior results from a subtle interplay between quantum interference and the normalization of the correlation functions. We show that by adjusting the mixing ratio and phase, one can achieve full tunability of the second-order correlation, ranging from anti-bunching to bunching. We further extend our analysis to third-order correlation functions, both experimentally and theoretically, to provide new insights into the interpretation of higher-order correlations and offer practical tools for shaping quantum optical fields.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Date of First Compliant Deposit:	21 April 2026
Date of Acceptance:	11 March 2026
Last Modified:	21 Apr 2026 09:30
URI:	https://orca.cardiff.ac.uk/id/eprint/186521

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