Purifying Photon Indistinguishability through Quantum Interference

Autor(en)

Carlos F.D. Faurby, Lorenzo Carosini, Huan Cao, Patrik I. Sund, Lena M. Hansen, Francesco Giorgino, Andrew B. Villadsen, Stefan N. Van Den Hoven, Peter Lodahl, Stefano Paesani, Juan C. Loredo, Philip Walther

Abstrakt

Indistinguishability between photons is a key requirement for scalable photonic quantum technologies. We experimentally demonstrate that partly distinguishable single photons can be purified to reach near-unity indistinguishability by the process of quantum interference with ancillary photons followed by heralded detection of a subset of them. We report on the indistinguishability of the purified photons by interfering two purified photons and show improvements in the photon indistinguishability of 2.774(3)% in the low-noise regime, and as high as 10.2(5)% in the high-noise regime.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation, Forschungsverbund Quantum Aspects of Space Time

Externe Organisation(en)

University of Copenhagen, University of Twente, Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Physical Review Letters

Band

133

Anzahl der Seiten

7

ISSN

0031-9007

DOI

https://doi.org/10.48550/arXiv.2403.12866

Publikationsdatum

07-2024

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103026 Quantenoptik, 102040 Quantencomputing

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/b193690b-15e9-4179-9a12-fececb3a27e7