Fast quantum state control of a single trapped neutral atom

2006/09/30 by M. P. A. Jones, Matthew P. A. Jones, J. Beugnon +9 · 7 citations
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum Information and Cryptography #Quantum optics and atomic interactions #quant-ph

paper · pdf · doi:10.1103/physreva.75.040301

published as Physical review A 75 (11/04/2007) 040301(R)

openalex publication_date 2007/04/11 · arxiv created 2007/04/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We demonstrate the initialization, readout, and high-speed manipulation of a qubit stored in a single ⁸⁷Rb atom trapped in a submicrometer-sized optical tweezer. Single-qubit rotations are performed on a time scale below 100\phantom\rule0.3em0exns using two-photon Raman transitions. Using the spin-echo technique, we measure an irreversible dephasing time of 34\phantom\rule0.3em0exms. The readout of the single atom qubit is at the quantum projection noise limit when averaging up to 1000 individual events.

Citations

• Analysis of dephasing mechanisms in a standing-wave dipole trap

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• Doppler-free, multiwavelength acousto-optic deflector for two-photon addressing arrays of Rb atoms in a quantum information processor
• Dynamics of a spin qubit in an optical dipole trap
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