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Building of one-way Hadamard gate for squeezed coherent states

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dc.contributor.author Podoshvedov S.A. en
dc.date.accessioned 2018-06-18T09:24:41Z
dc.date.available 2018-06-18T09:24:41Z
dc.date.issued 2013
dc.identifier.issn 10502947
dc.identifier.uri http://dspace.susu.ru/handle/0001.74/19745
dc.description.abstract We present an optical scheme to conditionally generate even or odd squeezed superpositions of coherent states (SSCSs). The optical setup consists of an unbalanced beam splitter whose transmittance tends to unity, and additional balanced beam splitters and photodetectors in auxiliary modes. Squeezed coherent states with different amplitudes are the input states in the optical scheme. The single-qubit operations are probabilistic and employ two- and three-photon subtractions from initial beams as the driving force. Generation of the even or odd SSCSs is observed in a wide diapason of values of used parameters. We consider a possibility to realize a one-way Hadamard gate for the squeezed coherent states when the base states are transformed into superposition states. States approximating the output states of a Hadamard gate with high fidelity can be realized by imposing restrictions on the values of used parameters. Higher-order subtractions from input beams are necessary to generate the SSCSs with larger amplitudes and higher fidelities. The problem is resolved in a Wigner representation to take into account imperfections of the optical devices. © 2013 American Physical Society. en]
dc.language.iso English
dc.relation.ispartof Physical Review A - Atomic, Molecular, and Optical Physics en]
dc.subject Coherent state en]
dc.subject Driving forces en]
dc.subject Hadamard gate en]
dc.subject Input state en]
dc.subject Optical scheme en]
dc.subject Optical set-up en]
dc.subject Single qubit operations en]
dc.subject Squeezed coherent state en]
dc.subject Superposition state en]
dc.subject Three-photon en]
dc.subject Wigner representation en]
dc.subject Optical instruments en]
dc.subject Prisms en]
dc.subject Optical beam splitters en]
dc.title Building of one-way Hadamard gate for squeezed coherent states en
dc.type Article en]
dc.identifier.doi 10.1103/PhysRevA.87.012307
dc.identifier.doi https://doi.org/10.1103/PhysRevA.87.012307
dc.identifier.scopus https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872291581&doi=10.1103%2fPhysRevA.87.012307&partnerID=40&md5=14a30ccb3dcbbe3ea6221ba2c0a00dac

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