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Distinguishability and Many-Particle Interference

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Title: Distinguishability and Many-Particle Interference
Authors: Menssen, AJ
Jones, AE
Metcalf, BJ
Tichy, MC
Barz, S
Kolthammer, WS
Walmsley, IA
Item Type: Journal Article
Abstract: Quantum interference of two independent particles in pure quantum states is fully described by the particles’ distinguishability: the closer the particles are to being identical, the higher the degree of quantum interference. When more than two particles are involved, the situation becomes more complex and interference capability extends beyond pairwise distinguishability, taking on a surprisingly rich character. Here, we study many-particle interference using three photons. We show that the distinguishability between pairs of photons is not sufficient to fully describe the photons’ behavior in a scattering process, but that a collective phase, the triad phase, plays a role. We are able to explore the full parameter space of three-photon interference by generating heralded single photons and interfering them in a fiber tritter. Using multiple degrees of freedom—temporal delays and polarization—we isolate three-photon interference from two-photon interference. Our experiment disproves the view that pairwise two-photon distinguishability uniquely determines the degree of nonclassical many-particle interference.
Issue Date: 10-Apr-2017
Date of Acceptance: 1-Apr-2017
URI: http://hdl.handle.net/10044/1/48719
DOI: https://dx.doi.org/10.1103/PhysRevLett.118.153603
ISSN: 0031-9007
Publisher: American Physical Society
Journal / Book Title: PHYSICAL REVIEW LETTERS
Volume: 118
Issue: 15
Copyright Statement: © 2017 American Physical Society. Phys. Rev. Lett. 118, 153603 – Published 10 April 2017
Keywords: Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
LINEAR OPTICS
BOSON
PHASE
CHIP
quant-ph
General Physics
02 Physical Sciences
Publication Status: Published
Article Number: ARTN 153603
Appears in Collections:Quantum Optics and Laser Science
Physics
Faculty of Natural Sciences



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