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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 22 — Oct. 27, 2008
  • pp: 17161–17170

Controllable entanglement and polarization phase gate in coupled double quantum-well structures

Wen-Xing Yang and Ray-Kuang Lee  »View Author Affiliations


Optics Express, Vol. 16, Issue 22, pp. 17161-17170 (2008)
http://dx.doi.org/10.1364/OE.16.017161


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Abstract

By analyzing the nonlinear optical response in an asymmetric coupled double quantum well structure based on the intersubband transitions, we show that a giant Kerr nonlinearity with a relatively large cross-phase modulation coefficient can be used to produce efficient photonphoton entanglement and implement an all-optical two-qubit quantum polarization phase gate. We also demonstrate that such photon-photon entanglement is practically controllable and may facilitate more practical applications in all-optical quantum information and computation.

© 2008 Optical Society of America

OCIS Codes
(190.3270) Nonlinear optics : Kerr effect
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(230.1150) Optical devices : All-optical devices
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Nonlinear Optics

History
Original Manuscript: July 11, 2008
Revised Manuscript: October 3, 2008
Manuscript Accepted: October 10, 2008
Published: October 13, 2008

Citation
Wen-Xing Yang and Ray-Kuang Lee, "Controllable entanglement and polarization phase gate in coupled double quantum-well structures," Opt. Express 16, 17161-17170 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-22-17161


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