Purifying Photon Indistinguishability through Quantum Interference

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

doi:10.48550/arXiv.2403.12866

Purifying Photon Indistinguishability through Quantum Interference

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

Publications: Contribution to journal › Article › Peer Reviewed

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.

Original language	English
Article number	033604
Number of pages	7
Journal	Physical Review Letters
Volume	133
Issue number	3
DOIs	https://doi.org/10.48550/arXiv.2403.12866 https://doi.org/10.1103/PhysRevLett.133.033604
Publication status	Published - 19 Jul 2024

Austrian Fields of Science 2012

103025 Quantum mechanics
103026 Quantum optics
102040 Quantum computing

Access to Document

Cite this

Faurby, C. F. D., Carosini, L., Cao, H., Sund, P. I., Hansen, L. M., Giorgino, F., Villadsen, A. B., Van Den Hoven, S. N., Lodahl, P., Paesani, S., Loredo, J. C., & Walther, P. (2024). Purifying Photon Indistinguishability through Quantum Interference. Physical Review Letters, 133(3), [033604]. https://doi.org/10.48550/arXiv.2403.12866, https://doi.org/10.1103/PhysRevLett.133.033604

@article{b193690b15e941799a12fececb3a27e7,

title = "Purifying Photon Indistinguishability through Quantum Interference",

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.",

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

note = "Publisher Copyright: {\textcopyright} 2024 American Physical Society.",

year = "2024",

month = jul,

day = "19",

doi = "10.48550/arXiv.2403.12866",

language = "English",

volume = "133",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "AMER PHYSICAL SOC",

number = "3",

}

TY - JOUR

T1 - Purifying Photon Indistinguishability through Quantum Interference

AU - Faurby, Carlos F.D.

AU - Carosini, Lorenzo

AU - Cao, Huan

AU - Sund, Patrik I.

AU - Hansen, Lena M.

AU - Giorgino, Francesco

AU - Villadsen, Andrew B.

AU - Van Den Hoven, Stefan N.

AU - Lodahl, Peter

AU - Paesani, Stefano

AU - Loredo, Juan C.

AU - Walther, Philip

PY - 2024/7/19

Y1 - 2024/7/19

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85199211657&partnerID=8YFLogxK

U2 - 10.48550/arXiv.2403.12866

DO - 10.48550/arXiv.2403.12866

M3 - Article

C2 - 39094150

AN - SCOPUS:85199211657

VL - 133

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 3

M1 - 033604

ER -

Purifying Photon Indistinguishability through Quantum Interference

Abstract

Austrian Fields of Science 2012

Access to Document

Other files and links

quantA: Quantum Science Austria

Applications and Hardware for Photonic Quantum Information Processing

Multiphotonen-Experimente mit Halbleiterquantenpunkten

Cite this

Purifying Photon Indistinguishability through Quantum Interference

Abstract

Austrian Fields of Science 2012

Access to Document

Other files and links

Projects

quantA: Quantum Science Austria

Applications and Hardware for Photonic Quantum Information Processing

Multiphotonen-Experimente mit Halbleiterquantenpunkten

Cite this