Purifying Photon Indistinguishability through Quantum Interference
- Author(s)
- 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
- Abstract
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(s)
- Quantum Optics, Quantum Nanophysics and Quantum Information, Research Network Quantum Aspects of Space Time
- External organisation(s)
- University of Copenhagen, University of Twente, Österreichische Akademie der Wissenschaften (ÖAW)
- Journal
- Physical Review Letters
- Volume
- 133
- No. of pages
- 7
- ISSN
- 0031-9007
- DOI
- https://doi.org/10.48550/arXiv.2403.12866
- Publication date
- 07-2024
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103025 Quantum mechanics, 103026 Quantum optics, 102040 Quantum computing
- ASJC Scopus subject areas
- General Physics and Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/b193690b-15e9-4179-9a12-fececb3a27e7