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Trapped Ion Quantum Computing

Controlling a mesoscopic spin environment by quantum bit manipulation.

PubMed
Authors: Taylor JM, Imamoglu A, Lukin MD

Year

2003

Paper ID

13012

Status

Peer-reviewed

Abstract Read

~2 min

Abstract Words

104

Citations

130

Abstract

We present a unified description of cooling and manipulation of a mesoscopic bath of nuclear spins via coupling to a single quantum system of electronic spin (quantum bit). We show that a bath cooled by the quantum bit rapidly saturates. Although the resulting saturated states of the spin bath ("dark states") generally have low degrees of polarization and purity, their symmetry properties make them a valuable resource for the coherent manipulation of quantum bits. Specifically, we demonstrate that the dark states of nuclear ensembles can be used to coherently control the system-bath interaction and to provide a robust, long-lived quantum memory for qubit states.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
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  • We present a unified description of cooling and manipulation of a mesoscopic bath of nuclear spins via coupling to a single quantum system of electronic spin (quantum bit).

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References & Citation Signals

[1] DOI https://doi.org/10.1103/PhysRevLett.91.246802 [2] Publisher https://pubmed.ncbi.nlm.nih.gov/14683144/

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Current Paper #13012

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