Tools for Multimode Quantum Information: Modulation, Detection, and Spatial Quantum Correlations

Mikael Østergaard Lassen, Vincent Delaubert, Jirí Janousek, Kate Wagner, Hans. A- Bachor, Ping Koy Lam, Nikola Treps, Preben Buchhave, Claude Fabre, Charles Harb

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We present here all the tools required for continuous variable parallel quantum information protocols based on spatial multi-mode quantum correlations and entanglement. We describe techniques for encoding and detecting this quantum information with high efficiency in the individual modes. We use the generation of spatial squeezing light in higher order transverse Hermite-Gauss modes as a demonstration of the quality of our scheme. The squeezing in selective modes is achieved by fine tuning of the phase matching condition of the nonlinear (2) material and the cavity resonance condition of the optical parametric amplifier. By combining these modes we can now build a practical multi-mode optical quantum information system.
Original languageEnglish
JournalPhysical Review Letters
Issue number8
Pages (from-to)083602
Publication statusPublished - 2007

Bibliographical note

Copyright 2007 American Physical Society



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