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Complete hyperentangled-Bell-state analysis for photon systems assisted by quantum-dot spins in optical microcavitiesBao-Cang Ren, Hai-Rui Wei, Ming Hua, Tao Li, and Fu-Guo Deng »View Author Affiliations
Bao-Cang Ren,
Hai-Rui Wei,
Ming Hua,
Tao Li,
and Fu-Guo Deng^{*}
^{}Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875, China ^{*}Corresponding author: fgdeng@bnu.edu.cn |
Optics Express, Vol. 20, Issue 22, pp. 24664-24677 (2012)
http://dx.doi.org/10.1364/OE.20.024664
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Abstract
Bell-state analysis (BSA) is essential in quantum communication, but it is impossible to distinguish unambiguously the four Bell states in the polarization degree of freedom (DOF) of two-photon systems with only linear optical elements, except for the case in which the BSA is assisted with hyperentangled states, the simultaneous entanglement in more than one DOF. Here, we propose a scheme to distinguish completely the 16 hyperentangled Bell states in both the polarization and the spatial-mode DOFs of two-photon systems, by using the giant nonlinear optics in quantum dot-cavity systems. This scheme can be applied to increase the channel capacity of long-distance quantum communication based on hyperentanglement, such as entanglement swapping, teleportation, and superdense coding. We use hyperentanglement swapping as an example to show the application of this HBSA.
© 2012 OSA
OCIS Codes
(270.0270) Quantum optics : Quantum optics
(270.5580) Quantum optics : Quantum electrodynamics
(270.5565) Quantum optics : Quantum communications
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices
ToC Category:
Quantum Optics
History
Original Manuscript: June 28, 2012
Revised Manuscript: September 8, 2012
Manuscript Accepted: September 24, 2012
Published: October 12, 2012
Citation
Bao-Cang Ren, Hai-Rui Wei, Ming Hua, Tao Li, and Fu-Guo Deng, "Complete hyperentangled-Bell-state analysis for photon systems assisted by quantum-dot spins in optical microcavities," Opt. Express 20, 24664-24677 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-22-24664
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