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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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Limitations of rotating-wave approximation in magnetic resonance : characterization and elimination of the Bloch–Siegert shift in magneto-optics
Bibliographic description
| title: | Limitations of rotating-wave approximation in magnetic resonance : characterization and elimination of the Bloch–Siegert shift in magneto-optics |
| author: | Sudyka Julia  , Pustelny Szymon , Gawlik Wojciech
|
| journal title: | New Journal of Physics |
| volume: | 21 |
| issue: | 2 |
| date of publication : | 2019 |
| article ID: | 023024 |
| eISSN: |
1367-2630 |
| DOI: | |
| language: | English |
| journal language: | English |
| abstract in English: | 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. |
| affiliation: | Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego |
| type: | journal article |
| subtype: | academic paper |
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Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 3.0
Projekt „Repozytorium otwartego dostępu do dorobku naukowego i dydaktycznego UJ” współfinansowany w ramach poddziałania 2.3.1 „Cyfrowe udostępnianie zasobów nauki” Programu Operacyjnego Polska Cyfrowa z Europejskiego Funduszu Rozwoju Regionalnego i budżetu państwa na podstawie umowy o dofinansowanie nr POPC.02.03.01-00-0030/17-00
