Linear Ascending Metrological Algorithm

M. R. Perelshtein*, N. S. Kirsanov, V. V. Zemlyanov, A. Lebedev, G. Blatter, V. M. Vinokur, G. B. Lesovik

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

3 Lataukset (Pure)

Abstrakti

The ubiquitous presence of shot noise sets a fundamental limit to the measurement precision in classical metrology. Recent advances in quantum devices and novel quantum algorithms utilizing interference effects are opening new routes for overcoming the detrimental noise tyranny. However, further progress is limited by the restricted capability of existing algorithms to account for the decoherence pervading experimental implementations. Here, adopting a systematic approach to the evaluation of effectiveness of metrological procedures, we devise the Linear Ascending Metrological Algorithm (LAMA), which offers a remarkable increase in precision in the demanding situation where a decohering quantum system is used to measure a continuously distributed variable. We introduce our protocol in the context of magnetic field measurements, assuming superconducting transmon devices as sensors operated in a qudit mode. Our findings demonstrate a quantum-metrological procedure capable of mitigating detrimental dephasing and relaxation effects.

AlkuperäiskieliEnglanti
Artikkeli013257
Sivumäärä12
JulkaisuPHYSICAL REVIEW RESEARCH
Vuosikerta3
Numero1
DOI - pysyväislinkit
TilaJulkaistu - 19 maaliskuuta 2021
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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