Experimental investigation of heralded Gaussification of phase-randomized coherent states of light
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73626862" target="_blank" >RIV/61989592:15310/24:73626862 - isvavai.cz</a>
Result on the web
<a href="https://opg.optica.org/directpdfaccess/c13710d1-be58-4e07-9aafc874156effdf_564962/oe-32-26-45582.pdf" target="_blank" >https://opg.optica.org/directpdfaccess/c13710d1-be58-4e07-9aafc874156effdf_564962/oe-32-26-45582.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/OE.539787" target="_blank" >10.1364/OE.539787</a>
Alternative languages
Result language
angličtina
Original language name
Experimental investigation of heralded Gaussification of phase-randomized coherent states of light
Original language description
Probabilistic heralded Gaussification of quantum states of light is an important ingredient of protocols for distillation of continuous variable entanglement and squeezing. An elementary step of the heralded Gaussification protocol consists of interference of two copies of the state at a balanced beam splitter, followed by conditioning on the outcome of a suitable Gaussian quantum measurement on one output mode. When iterated, the protocol either converges to a Gaussian state or diverges. Here, we report on experimental investigation of the convergence properties of iterative heralded Gaussification. We experimentally implement two iterations of the protocol, which requires simultaneous processing of four copies of the input state. We utilize the phase-randomized coherent states as the input states, which greatly facilitates the experiment because these states can be generated deterministically, and their mean photon number can easily be tuned. We comprehensively characterize the input and partially Gaussified states by balanced homodyne detection and quantum state tomography. Our experimental results are in good agreement with theoretical predictions and they provide new insights into the convergence properties of heralded quantum Gaussification.
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/GA21-23120S" target="_blank" >GA21-23120S: Quantum filters for engineering optical quantum states and operations</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
OPTICS EXPRESS
ISSN
1094-4087
e-ISSN
—
Volume of the periodical
32
Issue of the periodical within the volume
26
Country of publishing house
US - UNITED STATES
Number of pages
18
Pages from-to
45582-45599
UT code for WoS article
001391432200005
EID of the result in the Scopus database
2-s2.0-85212580212