Interferometric measurement of the quadrature coherence scale using two replicas of a quantum optical state
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73619924" target="_blank" >RIV/61989592:15310/23:73619924 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.023730" target="_blank" >https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.023730</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.108.023730" target="_blank" >10.1103/PhysRevA.108.023730</a>
Alternative languages
Result language
angličtina
Original language name
Interferometric measurement of the quadrature coherence scale using two replicas of a quantum optical state
Original language description
Assessing whether a quantum state ˆρ is nonclassical (i.e., incompatible with a mixture of coherent states) is a ubiquitous question in quantum optics, yet a nontrivial experimental task because many nonclassicality witnesses are nonlinear in ˆρ. In particular, if we want to witness or measure the nonclassicality of a state by evaluating its quadrature coherence scale, this a priori requires full state tomography. Here, we provide an experimental procedure for directly accessing this quantity with a simple linear interferometer involving two replicas (independent and identical copies) of the state ˆρ supplemented with photon-number-resolving measurements. This finding, which we interpret as an extension of the Hong-Ou-Mandel effect, illustrates the wide applicability of the multicopy interferometric technique in order to circumvent state tomography in quantum optics.
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/8C20002" target="_blank" >8C20002: Short-Range Optical Quantum Connections</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
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
2469-9934
Volume of the periodical
108
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
"023730-1"-"023730-11"
UT code for WoS article
001063028100001
EID of the result in the Scopus database
2-s2.0-85172691352