Realization of Versatile and Effective Quantum Metrology Using a Single Bosonic Mode
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F25%3A73627468" target="_blank" >RIV/61989592:15310/25:73627468 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prxquantum/pdf/10.1103/PRXQuantum.6.010304" target="_blank" >https://journals.aps.org/prxquantum/pdf/10.1103/PRXQuantum.6.010304</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PRXQuantum.6.010304" target="_blank" >10.1103/PRXQuantum.6.010304</a>
Alternative languages
Result language
angličtina
Original language name
Realization of Versatile and Effective Quantum Metrology Using a Single Bosonic Mode
Original language description
Quantum metrology offers the potential to surpass its classical counterpart, pushing the boundaries of measurement precision toward the ultimate Heisenberg limit. This enhanced precision is normally attained by utilizing large squeezed states or multiparticle entangled quantum states, both of which are often challenging to implement and prone to decoherence in real quantum devices. In this work, we present a versatile and on-demand protocol for deterministic parameter estimation that leverages two efficient state-transfer operations on a single bosonic mode. Specifically, we demonstrate this protocol in the context of phase estimation using the superposition of coherent states in the bosonic circuit quantum electrodynamics (cQED) platform. With low average photon numbers of only up to 1.76, we achieve quantum enhanced precision approaching the Heisenberg scaling, reaching a metrological gain of 7.5(6) dB. Importantly, we show that the gain or sensitivity range can be further enhanced on the fly by tailoring the input states, with different superposition weights, based on specific system constraints. The realization of this versatile and efficient scheme affords a promising path toward practical quantum enhanced sensing, not only for bosonic cQED hardware but also readily extensible to other continuous-variable platforms.
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
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)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PRX Quantum
ISSN
2691-3399
e-ISSN
2691-3399
Volume of the periodical
6
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
"010304-1"-"010304-15"
UT code for WoS article
001417484800001
EID of the result in the Scopus database
2-s2.0-85217265983