Decoherence-assisted quantum driving
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10468405" target="_blank" >RIV/00216208:11320/23:10468405 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=8nwodOE0Zm" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=8nwodOE0Zm</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.107.L030603" target="_blank" >10.1103/PhysRevA.107.L030603</a>
Alternative languages
Result language
angličtina
Original language name
Decoherence-assisted quantum driving
Original language description
We address the problem of optimal quantum state preparation. We propose a protocol based on a stroboscopic driving of the system in its parameter space combined with repeated measurementlike interactions with an external spectator system. In the limit of infinite-rate interactions, the protocol naturally yields unit fidelity due to the quantum Zeno effect. For realistic finite-rate interactions we show that the fidelity is maximized if the discretized driving trajectory has a minimal geometric length and keeps a constant speed with respect to the Provost-Vallee metric in the parameter space. We numerically test the protocol in an interacting multiqubit system, demonstrating its possible dominance over the coherent driving. Our results can be used in various quantum information applications.
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
—
OECD FORD branch
10300 - Physical sciences
Result continuities
Project
<a href="/en/project/GA20-09998S" target="_blank" >GA20-09998S: DYNAMICAL SIGNATURES OF EXCITED-STATE QUANTUM PHASE TRANSITIONS</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
107
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
L030603
UT code for WoS article
000959714900006
EID of the result in the Scopus database
2-s2.0-85151269810