Slowing Quantum Decoherence by Squeezing in Phase Space
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73586548" target="_blank" >RIV/61989592:15310/18:73586548 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.120.073603" target="_blank" >https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.120.073603</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.120.073603" target="_blank" >10.1103/PhysRevLett.120.073603</a>
Alternative languages
Result language
angličtina
Original language name
Slowing Quantum Decoherence by Squeezing in Phase Space
Original language description
Non-Gaussian states, and specifically the paradigmatic cat state, are well known to be very sensitive to losses. When propagating through damping channels, these states quickly lose their nonclassical features and the associated negative oscillations of their Wigner function. However, by squeezing the superposition states, the decoherence process can be qualitatively changed and substantially slowed down. Here, as a first example, we experimentally observe the reduced decoherence of squeezed optical coherent-state superpositions through a lossy channel. To quantify the robustness of states, we introduce a combination of a decaying value and a rate of decay of the Wigner function negativity. This work, which uses squeezing as an ancillary Gaussian resource, opens new possibilities to protect and manipulate quantum superpositions in phase space.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
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
2018
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 Letters
ISSN
0031-9007
e-ISSN
—
Volume of the periodical
120
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
"073603-1"-"073603-6"
UT code for WoS article
000424912000009
EID of the result in the Scopus database
2-s2.0-85042161850