Quantum Rabi interferometry of motion and radiation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73619177" target="_blank" >RIV/61989592:15310/23:73619177 - isvavai.cz</a>
Result on the web
<a href="https://quantum-journal.org/papers/q-2023-05-31-1024/" target="_blank" >https://quantum-journal.org/papers/q-2023-05-31-1024/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.22331/q-2023-05-31-1024" target="_blank" >10.22331/q-2023-05-31-1024</a>
Alternative languages
Result language
angličtina
Original language name
Quantum Rabi interferometry of motion and radiation
Original language description
The precise determination of a displacement of a mechanical oscillator or a microwave field in a predetermined direction in phase space can be carried out with trapped ions or superconducting circuits, respectively, by coupling the oscillator with ancilla qubits. Through that coupling, the displacement information is transferred to the qubits which are then subsequently read out. However, unambiguous estimation of displacement in an unknown direction in the phase space has not been attempted in such oscillator-qubit systems. Here, we propose a hybrid oscillator-qubit interferometric setup for the unambiguous estimation of phase space displacements in an arbitrary direction, based on feasible Rabi interactions beyond the rotating-wave approximation. Using such a hybrid Rabi interferometer for quantum sensing, we show that the performance is superior to the ones attained by single-mode estimation schemes and a conventional interferometer based on Jaynes-Cummings interactions. Moreover, we find that the sensitivity of the Rabi interferometer is independent of the thermal occupation of the oscillator mode, and thus cooling it to the ground state before sensing is not required. We also perform a thorough investigation of the effect of qubit dephasing and oscillator thermalization. We find the interferometer to be fairly robust, outperforming different benchmark estimation schemes even for large dephasing and thermalization.
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
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Quantum
ISSN
2521-327X
e-ISSN
2521-327X
Volume of the periodical
7
Issue of the periodical within the volume
31.05.2023
Country of publishing house
AT - AUSTRIA
Number of pages
34
Pages from-to
"1024-1"-"1024-34"
UT code for WoS article
001007504700001
EID of the result in the Scopus database
2-s2.0-85128982021