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Journal Article

Optical hybrid approaches to quantum information


van Loock,  Peter
van Loock Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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van Loock, P. (2011). Optical hybrid approaches to quantum information. LASER & PHOTONICS REVIEWS, 5(2), 167-200. doi:10.1002/lpor.201000005.

Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-6A1B-8
This article reviews recent hybrid approaches to optical quantum information processing, in which both discrete and continuous degrees of freedom are exploited. There are well-known limitations to optical single-photon-based qubit and multi-photon-based qumode implementations of quantum communication and quantum computation, when the toolbox is restricted to the most practical set of linear operations and resources such as linear optics and Gaussian operations and states. The recent hybrid approaches aim at pushing the feasibility, the efficiencies, and the fidelities of the linear schemes to the limits, potentially adding weak or measurement-induced nonlinearities to the toolbox.