Can Two-photon Interference be Considered the Interference of Two Photons?
Todd B. Pittman,Dmitry Strekalov,Alan L. Migdall,Morton H. Rubin,Alexander V. Sergienko,Yanhua Shih +5 more
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TLDR
In the sense of a quantum eraser, the distinguishability of the different two-photon Feynman amplitudes leading to a coincidence detection is removed by delaying the compensation until after the output of an unbalanced two-Photon interferometer.Abstract:
We report on a ``postponed compensation'' experiment in which the observed two-photon entangled state interference cannot be pictured in terms of the overlap of the two individual photon wave packets of a parametric down-conversion pair on a beam splitter. In the sense of a quantum eraser, the distinguishability of the different two-photon Feynman amplitudes leading to a coincidence detection is removed by delaying the compensation until after the output of an unbalanced two-photon interferometer.read more
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Multiphoton entanglement and interferometry
Jian-Wei Pan,Zeng-Bing Chen,Chao-Yang Lu,Harald Weinfurter,Anton Zeilinger,Marek Zukowski,Marek Zukowski +6 more
TL;DR: A review of the progress in photonic quantum information processing can be found in this article, where the emphasis is given to the creation of photonic entanglement of various forms, tests of the completeness of quantum mechanics (in particular, violations of local realism), quantum information protocols for quantum communication, and quantum computation with linear optics.
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On-chip quantum interference between silicon photon-pair sources
Joshua W. Silverstone,Damien Bonneau,Kazuya Ohira,N. Suzuki,Haruhiko Yoshida,Norio Iizuka,Mizunori Ezaki,Chandra M. Natarajan,Michael G. Tanner,Robert H. Hadfield,Val Zwiller,Graham D. Marshall,John Rarity,Jeremy L. O'Brien,Mark G. Thompson +14 more
TL;DR: In this paper, a silicon-on-insulator device combining two four-wave mixing photon-pair sources in an interferometer with a reconfigurable phase shifter is used to create and manipulate non-degenerate or degenerate, path-entangled or path-unentangled photon pairs.
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Entangling independent photons by time measurement
Matthaus Halder,Alexios Beveratos,Nicolas Gisin,Valerio Scarani,Christoph Simon,Hugo Zbinden +5 more
TL;DR: In this article, the authors presented an experiment where the coherence time of the photons exceeds the temporal resolution of the detectors, and pulsed sources can be replaced by continuous-wave sources, which do not require any synchronization.
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Can Two-Photon Correlation of Chaotic Light Be Considered as Correlation of Intensity Fluctuations?
TL;DR: A ghost imaging type of second-order spatial correlation experiment of chaotic light is presented to show that the classical understanding based on the concept of statistical intensity fluctuations does not give a correct interpretation for the observation.
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Entangled biphoton source - property and preparation
TL;DR: In this article, the authors introduce the concept of biphoton wavepacket and emphasize the very different physics associated with the entangled two-photon system (pure state) and with the individual subsystems (statistical mixture).