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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 6 — Jun. 1, 2010
  • pp: A175–A180

Phase control of a path-entangled photon state by a deformable membrane mirror

Cristian Bonato, Stefano Bonora, Andrea Chiuri, Paolo Mataloni, Giorgio Milani, Giuseppe Vallone, and Paolo Villoresi  »View Author Affiliations


JOSA B, Vol. 27, Issue 6, pp. A175-A180 (2010)
http://dx.doi.org/10.1364/JOSAB.27.00A175


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Abstract

We demonstrate the potentialities of a deformable mirror for closed-loop control of a two-photon path-entangled state subject to phase fluctuations. A custom-made membrane mirror is used to set a relative phase shift between the arms of an interferometric apparatus. The control algorithm estimates the phase of the quantum state by measurements of the coincidence events at the output ports of the interferometer and uses the measurement results to provide a feedback signal to the deformable mirror. Stabilization of the coincidence rate to within 1.5 standard deviation of the Poissonian noise is demonstrated over 2000  s .

© 2010 Optical Society of America

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(270.2500) Quantum optics : Fluctuations, relaxations, and noise

ToC Category:
Quantum Metrology

History
Original Manuscript: February 24, 2010
Revised Manuscript: April 8, 2010
Manuscript Accepted: April 9, 2010
Published: May 17, 2010

Citation
Cristian Bonato, Stefano Bonora, Andrea Chiuri, Paolo Mataloni, Giorgio Milani, Giuseppe Vallone, and Paolo Villoresi, "Phase control of a path-entangled photon state by a deformable membrane mirror," J. Opt. Soc. Am. B 27, A175-A180 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-6-A175

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