Limitations of rotating-wave approximation in magnetic resonance : characterization and elimination of the Bloch–Siegert shift in magneto-optics

doi:10.1088/1367-2630/aaf778

Limitations of rotating-wave approximation in magnetic resonance : characterization and elimination of the Bloch–Siegert shift in magneto-optics

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Limitations of rotating-wave approximation in magnetic resonance : characterization and elimination of the Bloch–Siegert shift in magneto-optics

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dc.contributor.author	Sudyka, Julia [USOS79351]	pl
dc.contributor.author	Pustelny, Szymon [SAP11019465]	pl
dc.contributor.author	Gawlik, Wojciech [SAP11005398]	pl
dc.date.accessioned	2019-05-14T13:35:38Z
dc.date.available	2019-05-14T13:35:38Z
dc.date.issued	2019	pl
dc.identifier.uri	https://ruj.uj.edu.pl/xmlui/handle/item/74656
dc.language	eng	pl
dc.rights	Udzielam licencji. Uznanie autorstwa 3.0	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/legalcode	*
dc.title	Limitations of rotating-wave approximation in magnetic resonance : characterization and elimination of the Bloch–Siegert shift in magneto-optics	pl
dc.type	JournalArticle	pl
dc.abstract.en	We present investigations of radio-frequency (RF) resonances observed in an optically pumped rubidium vapor. By measuring the systematic shifts (the Bloch–Siegert shifts) of RF resonances in low magnetic fields, we demonstrate limitations of the rotating-wave approximation in the case of angular momentum $F \geq 1$. The resonance shifts and deformations are characterized in a wide range of parameters and it is shown that the observed behavior is far more complex than in a standard two-level system. It is also demonstrated that the shifts can be controllably turned on or off by switching between the oscillating and rotating magnetic field. Experimental results are supported with numerical calculations, reproducing all features of the observed signals. Besides fundamental aspect of the research, application of rotating magnetic field helps to suppress/evaluate spectroscopic-measurement and precise-metrology systematic errors. The reported study has also important implications for quantum metrology and information processing beyond RWA and standard two-state qubit dynamics.	pl
dc.description.volume	21	pl
dc.description.number	2	pl
dc.identifier.doi	10.1088/1367-2630/aaf778	pl
dc.identifier.eissn	1367-2630	pl
dc.title.journal	New Journal of Physics	pl
dc.language.container	eng	pl
dc.affiliation	Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego	pl
dc.subtype	Article	pl
dc.identifier.articleid	023024	pl
dc.rights.original	CC-BY; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0	pl
dc.identifier.project	ROD UJ / OP	pl
.pointsMNiSW	[2019 A]: 140