Generating nonclassical states from classical radiation by subtraction measurements

We describe the creation of nonclassical states of microwave radiation via ideal dichotomic single photon detection, i.e., a detector that only indicates presence or absence of photons. Ideally, such a detector has a back action in the form of the subtraction operator (bare lowering operator). Using...

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Bibliographic Details
Published inNew journal of physics Vol. 16; no. 4; pp. 45011 - 15
Main Authors Govia, Luke C G, Pritchett, Emily J, Wilhelm, Frank K
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 15.04.2014
Subjects
Coherence
Linearity
microwave photonics
Microwaves
Multiplier phototubes
Nonlinearity
Operators
Photomultiplier tubes
Photomultipliers
Photons
Physics
quantum computing
quantum information
Subtraction
superconducting circuits
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Summary:We describe the creation of nonclassical states of microwave radiation via ideal dichotomic single photon detection, i.e., a detector that only indicates presence or absence of photons. Ideally, such a detector has a back action in the form of the subtraction operator (bare lowering operator). Using the non-linearity of this back action, it is possible to create a large family of nonclassical states of microwave radiation, including squeezed and multi-component cat states, starting from a coherent state. We discuss the applicability of this protocol to current experimental designs of Josephson photomultipliers.
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ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/16/4/045011