Work

Universal quantum frequency comb measurements by spectral mode-matching

Year: 2024

Type: article

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.

Source: Optica Quantum

DOI: 10.1364/opticaq.532232

Authors: Bakhao Dioum, Virginia D’Auria, Alessandro Zavatta, Olivier Pfister, Giuseppe Patera

Institutions: Université de Lille, Université Côte d'Azur, Communauté d'universités et d'établissements Université Côte d'Azur, National Institute of Optics, University of Virginia

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: diamond

Funders: National Science Foundation, Agence Nationale de la Recherche, Institut Universitaire de France, Division of Electrical, Communications and Cyber Systems