Shi-Liang Zhu et al 2006 Europhys. Lett. 73 485 doi:10.1209/epl/i2005-10424-4
Shi-Liang Zhu, C. Monroe and L.-M. Duan
Show affiliationsWe 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.
32.80.Qk Coherent control of atomic interactions with photons
03.67.Pp Quantum error correction and other methods for protection against decoherence
03.67.Lx Quantum computation architectures and implementations
Issue 4 (February 2006)
Received 10 November 2005, accepted for publication 15 December 2005, in final form 15 December 2005
Published 6 January 2006
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