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Production and applications of non-Gaussian quantum states of light
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This review covers recent theoretical and experimental efforts to extend the application of the continuous-variable quantum technology of light beyond "Gaussian" quantum states, such as coherent and squeezed states, into the domain of "non-Gaussian" states with negative Wigner functions. Starting with basic Gaussian nonclassicality associated with single- and two-mode vacuum states produced by means of parametric down-conversion and applying a set of standard tools, such as linear interferometry, coherent state injection, and conditional homodyne and photon number measurements, one can implement a large variety of optical states and processes that are relevant in fundamental quantum physics as well as quantum optical information processing. We present a systematic review of these methods, paying attention to both fundamental and practical aspects of their implementation, as well as a comprehensive overview of the results achieved therewith.
Forward citations
Cited by 6 Pith papers
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A new class of pure non-Gaussian optical states with trigonal phase-plane symmetry can be prepared by non-degenerate four-wave mixing followed by photon-number heralding.
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Enhancement of non-Gaussianity and nonclassicality of pair coherent states with postselected von Neumann measurement
Postselected von Neumann measurement on one mode of a pair coherent state can enhance non-Gaussianity and nonclassicality for anomalous weak values, though quantum teleportation fidelity is not improved over the initi...
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