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Ground-state cooling of a trapped ion Using long-wavelength radiation

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posted on 2023-06-08, 21:23 authored by Sebastian WeidtSebastian Weidt, J Randall, S C Webster, E D Standing, A Rodriguez, A E Webb, B Lekitsch, Winfried HensingerWinfried Hensinger
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¯=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.

Funding

Ion trap arrays for scalable quantum computing.; G0294; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/E011136/1

Quantum technology with nanofabricated ion trap chips; G0308; EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL; EP/G007276/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review Letters

ISSN

0031-9007

Publisher

American Physical Society

Issue

1

Volume

115

Article number

a013002

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2015-08-11

First Open Access (FOA) Date

2015-08-11

First Compliant Deposit (FCD) Date

2015-08-11

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