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Universal linear-optical quantum device: experimental implementation
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SYSNO ASEP 0337355 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Universal linear-optical quantum device: experimental implementation Title Univerzální lineárně optické kvantové zařízení: experimentální realizace Author(s) Černoch, Antonín (FZU-D) RID, ORCID
Soubusta, Jan (FZU-D) RID, ORCID
Dušek, M. (CZ)
Fiurášek, J. (CZ)Source Title Journal of Russian Laser Research. - : Springer - ISSN 1071-2836
Roč. 30, č. 5 (2009), 533-539Number of pages 7 s. Language eng - English Country US - United States Keywords quantum information ; quantum gate ; universal cloning Subject RIV BH - Optics, Masers, Lasers R&D Projects 1M06002 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100522 - FZU-D (2005-2011) UT WOS 000272617100018 DOI 10.1007/s10946-009-9089-7 Annotation We report on a linear-optical realization of a universal quantum device working with polarization encoded quantum bits. It can serve as a two-qubit partial SWAP entangling gate. The same device can be used also for filtering symmetric and antisymmetric parts of the input two-photon state. Through a partial symmetrization, the universal asymmetric quantum cloning of single-photon polarization states can be achieved. All functions can be implemented in one setup by changing the classical parameters like the phase shift and attenuation only. For the characterization of the device, the reconstruction of the output state by full process tomography was performed. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2010
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