Arbitrary-speed quantum gates within large ion crystals through minimum control of laser beams

Details Arbitrary-speed quantum gates within large ion crystals through minimum control of laser beams Arbitrary-speed quantum gates within large ion crystals through minimum control of laser beams

2005-08-03

arxiv.org/abs/quant-ph/0508037v1

Europhysics Letters 73,485 (2006)

Physics

Quantum Physics

4 pages

Scientific paper

10.1209/epl/i2005-10424-4

We propose a scheme to implement arbitrary-speed quantum entangling gates on two trapped ions immersed in a large linear crystal of ions, with minimal control of laser beams. For gate speeds slower than the oscillation frequencies in the trap, a single appropriately-detuned laser pulse is sufficient for high-fidelity gates. For gate speeds comparable to or faster than the local ion oscillation frequency, we discover a five-pulse protocol that exploits only the local phonon modes. This points to a method for efficiently scaling the ion trap quantum computer without shuttling ions.

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