Decoherence of a single-ion qubit immersed in a spin-polarized atomic bath

L. Ratschbacher, C. Sias, L. Carcagni, J.M. Silver, C. Zipkes, M. Köhl

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the immersion of a spin qubit encoded in a single trapped ion into a spin-polarized neutral atom environment, which possesses both continuous (motional) and discrete (spin) degrees of freedom. The environment offers the possibility of a precise microscopic description, which allows us to understand dynamics and decoherence from first principles. We observe the spin dynamics of the qubit and measure the decoherence times (T1 and T2), which are determined by the spin-exchange interaction as well as by an unexpectedly strong spin-nonconserving coupling mechanism. © 2013 American Physical Society.
Original languageEnglish
JournalPhysical review letters
Volume110
Issue number16
DOIs
Publication statusPublished - 2013
Externally publishedYes

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