Negative Wigner function at telecommunication wavelength from homodyne detection
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73581244" target="_blank" >RIV/61989592:15310/17:73581244 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/pra/pdf/10.1103/PhysRevA.95.061802" target="_blank" >https://journals.aps.org/pra/pdf/10.1103/PhysRevA.95.061802</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.95.061802" target="_blank" >10.1103/PhysRevA.95.061802</a>
Alternative languages
Result language
angličtina
Original language name
Negative Wigner function at telecommunication wavelength from homodyne detection
Original language description
Quantum states of light having a Wigner function with negative values represent a key resource in quantum communication and quantum information processing. Here we present the generation of such a state at the telecommunication wavelength of 1550 nm. The state is generated by means of photon subtraction from a weakly squeezed vacuum state and is heralded by the "click" of a single photon counter. Balanced homodyne detection is applied to reconstruct the Wigner function, also yielding the state's photon-number distribution. The heralding photons are frequency up-converted to 532 nm to allow for the use of a room-temperature (silicon) avalanche photodiode. The Wigner function reads W(0,0) = -0.063 +/- 0.004 at the origin of phase space, which certifies negativity with more than 15 standard deviations.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/GB14-36681G" target="_blank" >GB14-36681G: Center of Excellence for Classical and Quantum Interactions in Nanoworld</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review A
ISSN
2469-9926
e-ISSN
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Volume of the periodical
95
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
"061802-1"-"061802-5"
UT code for WoS article
000404012500002
EID of the result in the Scopus database
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