Nonlinear feedforward enabling quantum computation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73619510" target="_blank" >RIV/61989592:15310/23:73619510 - isvavai.cz</a>
Result on the web
<a href="https://www.nature.com/articles/s41467-023-39195-w" target="_blank" >https://www.nature.com/articles/s41467-023-39195-w</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41467-023-39195-w" target="_blank" >10.1038/s41467-023-39195-w</a>

Result language
angličtina
Original language name
Nonlinear feedforward enabling quantum computation
Original language description
Measurement-based quantum computation with optical time-domain multiplexing is a promising method to realize a quantum computer from the viewpoint of scalability. Fault tolerance and universality are also realizable by preparing appropriate resource quantum states and electro-optical feedforward that is altered based on measurement results. While linear feedforward has been realized and become a common experimental technique, nonlinear feedforward was unrealized until now. In this paper, we demonstrate that a fast and flexible nonlinear feedforward realizes the essential measurement required for fault-tolerant and universal quantum computation. Using non-Gaussian ancillary states, we observed 10% reduction of the measurement excess noise relative to classical vacuum ancilla.
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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