‘‘Event-ready-detectors’’ Bell experiment via entanglement swapping

M. Żukowski; A. Zeilinger; M. A. Horne; A. K. Ekert

doi:10.1103/PhysRevLett.71.4287

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‘‘Event-ready-detectors’’ Bell experiment via entanglement swapping

Institut für Experimentalphysik, Universität Innsbruck, A-6020 Innsbruck, Austria
Instytut Fizyki Teoretycznej i Astrofizyki, Uniwersytet Gdanski, PL-80-952 Gdansk, Poland

Institut für Experimentalphysik, Universität Innsbruck, A-6020 Innsbruck, Austria

Stonehill College, North Easton, Massachusetts 02357

Institut für Experimentalphysik, Universität Innsbruck, A-6020 Innsburck, Austria
Merton College and Physics Department, Oxford University, OX1 4JD Oxford, United Kindgom

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Phys. Rev. Lett. 71, 4287 – Published 27 December, 1993

DOI: https://doi.org/10.1103/PhysRevLett.71.4287

Abstract

Using independent sources one can realize an ‘‘event-ready’’ Bell–Einstein-Podolsky-Rosen experiment in which one can measure directly the probabilities of the various outcomes including nondetection of both particles. Our proposal involves two parametric down-converters. Subcoherence-time monitoring of the idlers provides a noninteractive quantum measurement entangling and preselecting the independent signals without touching them. We give the conditions for high fringe visibility and particle collection efficiency as required for a Bell test.

References (10)

B. Yurke and D. Stoler, Phys. Rev. A 46, 2229 (1992); for the GHZ case: Phys. Rev. Lett. 68, 1251 (1992).
J. S. Bell, Speakable and Unspeakable in Quantum Mechanics (Cambridge University, Cambridge, 1988), pp. 29 and 105.
A. Garg and N. D. Mermin, Phys. Rev. D 35, 3638 (1987).
J. F. Clauser and A. Shimony, Rep. Prog. Phys. 41, 1881 (1978).
Yet note that one of the arrangements proposed by Yurke and Stoler [1] can be run in an event-ready mode.
The fully symmetrized state gives the same final results.
S. Friberg, C. K. Hong and L. Mandel, Phys. Rev. Lett. 54, 2011 (1985); M. Horne, A. Shimony, and A. Zeilinger, in Quantum Coherence, edited by J. Anandan (World Scientific, Singapore, 1990).
C. K. Hong and L. Mandel, Phys. Rev. A 31, 2409 (1985); M. Zukowski, Phys. Lett. A 150, 136 (1990).
J. H. Eberly and K. Wódkiewicz J. Opt. Soc. Am. 67, 1252 (1977).
C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres and W. K. Wooters, Phys. Rev. Lett. 70, 1895 (1993).

[c1] B. Yurke and D. Stoler, Phys. Rev. A 46, 2229 (1992); for the GHZ case: Phys. Rev. Lett. 68, 1251 (1992).

[c2] J. S. Bell, Speakable and Unspeakable in Quantum Mechanics (Cambridge University, Cambridge, 1988), pp. 29 and 105.

[c3] A. Garg and N. D. Mermin, Phys. Rev. D 35, 3638 (1987).

[c4] J. F. Clauser and A. Shimony, Rep. Prog. Phys. 41, 1881 (1978).

[c5] Yet note that one of the arrangements proposed by Yurke and Stoler [1] can be run in an event-ready mode.

[c6] The fully symmetrized state gives the same final results.

[c7] S. Friberg, C. K. Hong and L. Mandel, Phys. Rev. Lett. 54, 2011 (1985); M. Horne, A. Shimony, and A. Zeilinger, in Quantum Coherence, edited by J. Anandan (World Scientific, Singapore, 1990).

[c8] C. K. Hong and L. Mandel, Phys. Rev. A 31, 2409 (1985); M. Zukowski, Phys. Lett. A 150, 136 (1990).

[c9] J. H. Eberly and K. Wódkiewicz J. Opt. Soc. Am. 67, 1252 (1977).

[c10] C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres and W. K. Wooters, Phys. Rev. Lett. 70, 1895 (1993).

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‘‘Event-ready-detectors’’ Bell experiment via entanglement swapping

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References (10)

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