Experimental Implementation of the Optical Fractional Fourier Transform in the Time-Frequency Domain
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
Dokumenter
- PhysRevLett.130.240801
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The fractional Fourier transform (FrFT), a fundamental operation in physics that corresponds to a rotation of phase space by any angle, is also an indispensable tool employed in digital signal processing for noise reduction. Processing of optical signals in their time-frequency degree of freedom bypasses the digitization step and presents an opportunity to enhance many protocols in quantum and classical communication, sensing, and computing. In this Letter, we present the experimental realization of the fractional Fourier transform in the time-frequency domain using an atomic quantum-optical memory system with processing capabilities. Our scheme performs the operation by imposing programmable interleaved spectral and temporal phases. We have verified the FrFT by analyses of chroncyclic Wigner functions measured via a shot-noise limited homodyne detector. Our results hold prospects for achieving temporal-mode sorting, processing, and superresolved parameter estimation.
Originalsprog | Engelsk |
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Artikelnummer | 240801 |
Tidsskrift | Physical Review Letters |
Vol/bind | 130 |
Udgave nummer | 24 |
ISSN | 0031-9007 |
DOI | |
Status | Udgivet - 16 jun. 2023 |
Bibliografisk note
Funding Information:
The “Quantum Optical Technologies” (MAB/2018/4) project is carried out within the International Research Agendas programme of the Foundation for Polish Science co-financed by the European Union under the European Regional Development Fund. We thank K. Banaszek for generous support.
Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
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