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Selective truncations of an optical state using projection synthesis

Adam Miranowicz·Sahin Kaya Ozdemir·Jiri Bajer·Masato Koashi·Nobuyuki Imoto
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Abstract

Selective truncation of Fock-state expansion of an optical field can be achieved using projection synthesis. The process removes predetermined Fock states from the input field by conditional measurement and teleportation. We present a scheme based on multiport interferometry to perform projection synthesis. This scheme can be used both as a generalized quantum scissors device, which filters out Fock states with photon numbers higher than a predetermined value, and also as a quantum punching device, which selectively removes specific Fock states making holes in the Fock-state expansion of the input field.

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Adam Miranowicz, Sahin Kaya Ozdemir, Jiri Bajer, Masato Koashi, Nobuyuki Imoto. 2006-05-16. Selective truncations of an optical state using projection synthesis. https://doi.org/10.1364/josab.24.000379

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