Geometric phase gate on an optical transition for ion trap quantum computation

2007/10/31 by Kihwan Kim, K. Kim, C. F. Roos +7 · 3 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.77.050303

published as Phys. Rev. A 77, 050303(R) (2008) · 4 pages, 2 figures

arxiv created 2008/03/25 · openalex publication_date 2008/05/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03

Abstract

We propose a geometric phase gate of two ion qubits that are encoded in two levels linked by an optical dipole-forbidden transition. Compared to hyperfine geometric phase gates mediated by electric dipole transitions, the gate has many interesting properties, such as very low spontaneous emission rates, applicability to magnetic field insensitive states, and use of a co-propagating laser beam geometry. We estimate that current technology allows for infidelities of around 10^\ensuremath-4.

Cited by

• The trapped-ion qubit tool box
• Colloquium: Trapped ions as quantum bits: Essential numerical tools
• Parallel execution of quantum gates in a long linear ion chain via Rydberg mode shaping

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