Non-Gaussian quantum state generation by multi-photon subtraction at the telecommunication wavelength

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73619000" target="_blank" >RIV/61989592:15310/23:73619000 - isvavai.cz</a>
Result on the web
<a href="https://opg.optica.org/oe/fulltext.cfm?uri=oe-31-8-12865&id=528766" target="_blank" >https://opg.optica.org/oe/fulltext.cfm?uri=oe-31-8-12865&id=528766</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/OE.486270" target="_blank" >10.1364/OE.486270</a>

Result language
angličtina
Original language name
Non-Gaussian quantum state generation by multi-photon subtraction at the telecommunication wavelength
Original language description
In the field of continuous-variable quantum information processing, non-Gaussian states with negative values of the Wigner function are crucial for the development of a fault-tolerant universal quantum computer. While several non-Gaussian states have been generated experimentally, none have been created using ultrashort optical wave packets, which are necessary for high-speed quantum computation, in the telecommunication wavelength band where mature optical communication technology is available. In this paper, we present the generation of non-Gaussian states on wave packets with a short 8-ps duration in the 1545.32 nm telecommunication wavelength band using photon subtraction up to three photons. We used a low-loss, quasi-single spatial mode waveguide optical parametric amplifier, a superconducting transition edge sensor, and a phase-locked pulsed homodyne measurement system to observe negative values of the Wigner function without loss correction up to three-photon subtraction. These results can be extended to the generation of more complicated non-Gaussian states and are a key technology in the pursuit of high-speed optical quantum computation.
Czech name
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Czech description
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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)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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