Universal quantum frequency comb measurements by spectral mode-matching

Year: 2024

Authors: Dioum B., D’Auria V., Zavatta A., Pfister O., Patera G.

Autors Affiliation: Univ Lille, CNRS, UMR 8523, PhLAM Phys Lasers Atomes & Mol, F-59000 Lille, France; Univ Cote Azur, Inst Phys Nice INPHYNI, CNRS, UMR 7010, 17 rue J Laupretre, F-06200 Nice, France; Consiglio Nazl Ric CNR INO, Ist Nazl Ott, Lgo E Fermi 6, I-50125 Florence, Italy; QTI Srl, Lgo E Fermi 6, I-50125 Florence, Italy; Univ Virginia, Dept Phys, 382 McCormick Rd, Charlottesville, VA 22903 USA.

Abstract: The frequency comb of a multimode interferometer offers exceptional scalability potential for field-encoded quantum information. However, the staple field detection method, homodyne detection, cannot access quantum information in the whole comb because some spectral quadratures [and their asymmetries with respect to the local oscillator (LO)] are out of reach. We present here the first general approach to making optimal measurements of a multimode quantum optical source-something that is required for photonic quantum computing and is not possible when using homodyne detection with a pulse-shaped LO. This approach uses universal spectral mode-matching, which can be understood as interferometry with a memory effect. We derive a complete formalism and propose an implementation by microcavity arrays. Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Journal/Review: OPTICA QUANTUM

Volume: 2 (6)      Pages from: 413  to: 427

More Information: Institut Universitaire de France (Nomination VDA, membre Junior) ; National Science Foundation (PHY-2112867, ECCS-2219760) ; Agence Nationale de la Recherche (OQuLus (ANR-22-PETQ-0013) , SPHIFA (ANR-20-CE47-0012) , LABEX CEMPI (ANR-11-LABX-0007) , I-SITE ULNE (ANR-16-IDEX-0004) ) .
KeyWords: Optical Parametric Oscillator; Noise Reduction; Squeezed States; Generation; Realization; Cavity; Light
DOI: 10.1364/OPTICAQ.532232