Continuous-variable quantum process tomography with squeezed-state probes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33154712" target="_blank" >RIV/61989592:15310/15:33154712 - isvavai.cz</a>
Result on the web
<a href="http://journals.aps.org/pra/abstract/10.1103/PhysRevA.92.022101#fulltext" target="_blank" >http://journals.aps.org/pra/abstract/10.1103/PhysRevA.92.022101#fulltext</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.92.022101" target="_blank" >10.1103/PhysRevA.92.022101</a>

Result language
angličtina
Original language name
Continuous-variable quantum process tomography with squeezed-state probes
Original language description
e propose a procedure for tomographic characterization of continuous-variable quantum operations which employs homodyne detection and single-mode squeezed probe states with a fixed degree of squeezing and antisqueezing and a variable displacement and orientation of squeezing ellipse. Density matrix elements of a quantum process matrix in Fock basis can be estimated by averaging well behaved pattern functions over the homodyne data. We show that this approach can be straightforwardly extended to characterization of quantum measurement devices and multimode operations. The probe states can be mixed, which makes the proposed procedure feasible with current technology.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Project
<a href="/en/project/7E13032" target="_blank" >7E13032: Bright Squeezed Vacuum and its Applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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