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Trapped Ion Quantum Computing

High-fidelity ion-trap quantum computing with hyperfine clock states

arXiv
Authors: L. Aolita, K. Kim, J. Benhelm, C. F. Roos, H. Häffner

Year

2007

Paper ID

49554

Status

Preprint

Abstract Read

~2 min

Abstract Words

95

Citations

N/A

Abstract

We propose the implementation of a geometric-phase gate on magnetic-field-insensitive qubits with hatσz-dependent forces for trapped ion quantum computing. The force is exerted by two laser beams in a Raman configuration. Qubit-state dependency is achieved by a small frequency detuning from the virtually-excited state. Ion species with excited states of long radiative lifetimes are used to reduce the chance of a spontaneous photon emission to less than 10-8 per gate-run. This eliminates the main source of gate infidelity of previous implementations. With this scheme it seems possible to reach the fault tolerant threshold.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2007 reference point for readers tracking recent quantum research.
  • We propose the implementation of a geometric-phase gate on magnetic-field-insensitive qubits with hatσ^z-dependent forces for trapped ion quantum computing.

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