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Spectral polarization and spectral phase control of time-energy entangled photons

Dayan, Barak and Bromberg, Yaron and Afek, Itai and Silberberg, Yaron (2007) Spectral polarization and spectral phase control of time-energy entangled photons. Physical Review A, 75 (4). Art. No. 043804. ISSN 1050-2947. doi:10.1103/PhysRevA.75.043804.

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We demonstrate a scheme to spectrally manipulate a collinear, continuous stream of time and energy entangled photons to generate beamlike, bandwidth-limited fluxes of polarization-entangled photons with nearly degenerate wavelengths. Utilizing an ultrashort-pulse shaper to control the spectral phase and polarization of the photon pairs, we tailor the shape of the Hong-Ou-Mandel interference pattern, demonstrating the rules that govern the dependence of this interference pattern on the spectral phases of the photons. We then use the pulse shaper to generate all four polarization Bell states. The singlet state generated by this scheme forms a very robust decoherence-free subspace, extremely suitable for long-distance fiber-optics-based quantum communication.

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Additional Information:©2007 The American Physical Society (Received 16 April 2006; published 4 April 2007) The authors wish to thank Avi Pe’er for many fruitful discussions. Financial support of this research by the Israel Science Foundation is gratefully acknowledged.
Subject Keywords:quantum entanglement; quantum optics; quantum communication; optical communication; information theory; high-speed optical techniques; Bell theorem; optical pulse shaping
Issue or Number:4
Record Number:CaltechAUTHORS:DAYpra07
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8559
Deposited By: Archive Administrator
Deposited On:20 Aug 2007
Last Modified:08 Nov 2021 20:51

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