Aufsatz in einer Fachzeitschrift
High-precision force sensing using a single trapped ion



Details zur Publikation
Autor(inn)en:
Ivanov, P.; Vitanov, N.; Singer, K.
Publikationsjahr:
2016
Zeitschrift:
Nature
Seitenbereich:
28078
Jahrgang/Band:
6
ISSN:
0028-0836

Zusammenfassung, Abstract


We introduce quantum sensing schemes for measuring very weak forces with a single trapped ion. They use the spin-motional coupling induced by the laser-ion interaction to transfer the relevant force information to the spin-degree of freedom. Therefore, the force estimation is carried out simply by observing the Ramsey-type oscillations of the ion spin states. Three quantum probes are considered, which are represented by systems obeying the Jaynes-Cummings, quantum Rabi (in 1D) and Jahn-Teller (in 2D) models. By using dynamical decoupling schemes in the Jaynes-Cummings and Jahn-Teller models, our force sensing protocols can be made robust to the spin dephasing caused by the thermal and magnetic field fluctuations. In the quantum-Rabi probe, the residual spin-phonon coupling vanishes, which makes this sensing protocol naturally robust to thermally-induced spin dephasing. We show that the proposed techniques can be used to sense the axial and transverse components of the force with a sensitivity beyond the range, i.e. in the (xennonewton, 10−27). The Jahn-Teller protocol, in particular, can be used to implement a two-channel vector spectrum analyzer for measuring ultra-low voltages.




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Zuletzt aktualisiert 2019-25-07 um 18:47