Slowing quantum decoherence of oscillators by hybrid processing
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F22%3A73613192" target="_blank" >RIV/61989592:15310/22:73613192 - isvavai.cz</a>
Result on the web
<a href="https://www.nature.com/articles/s41534-022-00577-5.pdf" target="_blank" >https://www.nature.com/articles/s41534-022-00577-5.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41534-022-00577-5" target="_blank" >10.1038/s41534-022-00577-5</a>
Alternative languages
Result language
angličtina
Original language name
Slowing quantum decoherence of oscillators by hybrid processing
Original language description
Quantum information encoded into the superposition of coherent states is an illustrative representation of practical applications of macroscopic quantum coherence possessing. However, these states are very sensitive to energy loss, losing their non-classical aspects of coherence very rapidly. An available deterministic strategy to slow down this decoherence process is to apply a Gaussian squeezing transformation prior to the loss as a protective step. Here, we propose a deterministic hybrid protection scheme utilizing strong but feasible interactions with two-level ancillas immune to spontaneous emission. We verify the robustness of the scheme against the dephasing of qubit ancilla. Our scheme is applicable to complex superpositions of coherent states in many oscillators, and remarkably, the robustness to loss is enhanced with the amplitude of the coherent states. This scheme can be realized in experiments with atoms, solid-state systems, and superconducting circuits.
Czech name
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Czech description
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Classification
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)
Result continuities
Project
<a href="/en/project/GX21-13265X" target="_blank" >GX21-13265X: Quantum non-Gaussian coherence</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
npj Quantum Information
ISSN
2056-6387
e-ISSN
2056-6387
Volume of the periodical
8
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
"67-1"-"67-8"
UT code for WoS article
000811740100001
EID of the result in the Scopus database
2-s2.0-85132072988