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Speed optimized two-qubit gates with laser coherent control techniques for ion trap quantum computing.

J J García-Ripoll1, P Zoller, J I Cirac

  • 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, Garching, D-85748, Germany. Juan.Ripoll@mpq.mpg.de

Physical Review Letters
|November 13, 2003
PubMed
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We introduce a novel two-qubit gate for trapped ions using laser control. This method is faster and more robust than current proposals, overcoming key limitations in quantum computing.

Area of Science:

  • Quantum Information Science
  • Atomic Physics
  • Quantum Computing

Background:

  • Trapped ions are a leading platform for quantum computing.
  • Existing two-qubit gates face limitations in speed and operational conditions.

Purpose of the Study:

  • To propose a new concept for a fast and robust two-qubit gate for trapped ion systems.
  • To overcome speed limitations and operational constraints of current quantum gates.

Main Methods:

  • Utilizes laser coherent control techniques for gate operation.
  • Operates on pairs of trapped ions.

Main Results:

  • The proposed gate is insensitive to ion temperature.
  • It functions outside the Lamb-Dicke regime.

Related Experiment Videos

  • Requires no individual laser addressing of ions.
  • Achieves speeds orders of magnitude faster than the trap period.

    • Conclusions:

    • This novel gate concept offers significant advantages for trapped ion quantum computing.
    • It provides a pathway to faster and more versatile quantum operations.