Ground-State Cooling of a Trapped Ion Using Long-Wavelength Radiation.

Weidt, S; Randall, J; Webster, S C; Standing, E D; Rodriguez, A; Webb, A E; Lekitsch, B; Hensinger, W K

Weidt, S; Randall, J; Webster, S C; Standing, E D; Rodriguez, A; Webb, A E; Lekitsch, B; Hensinger, W K.

Afiliación

Weidt S; Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom.
Randall J; Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom.
Webster SC; QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
Standing ED; Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom.
Rodriguez A; Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom.
Webb AE; Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom.
Lekitsch B; Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom.
Hensinger WK; Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom.

Phys Rev Lett ; 115(1): 013002, 2015 Jul 03.

Article en En | MEDLINE | ID: mdl-26182094

RESUMEN

We demonstrate ground-state cooling of a trapped ion using radio-frequency (rf) radiation. This is a powerful tool for the implementation of quantum operations, where rf or microwave radiation instead of lasers is used for motional quantum state engineering. We measure a mean phonon number of n[over ¯]=0.13(4) after sideband cooling, corresponding to a ground-state occupation probability of 88(7)%. After preparing in the vibrational ground state, we demonstrate motional state engineering by driving Rabi oscillations between the |n=0⟩ and |n=1⟩ Fock states. We also use the ability to ground-state cool to accurately measure the motional heating rate and report a reduction by almost 2 orders of magnitude compared with our previously measured result, which we attribute to carefully eliminating sources of electrical noise in the system.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2015 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos

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