Phys. Rev. Lett. 102, 080501 (2009) [4 pages]Dynamically Error-Corrected Gates for Universal Quantum ComputationReceived 21 July 2008; published 26 February 2009 Scalable quantum computation in realistic devices requires that precise control can be implemented efficiently in the presence of decoherence and operational errors. We propose a general constructive procedure for designing robust unitary gates on an open quantum system without encoding or measurement overhead. Our results allow for a low-level error correction strategy solely based on Hamiltonian engineering using realistic bounded-strength controls and may substantially reduce implementation requirements for fault-tolerant quantum computing architectures. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.080501
DOI:
10.1103/PhysRevLett.102.080501
PACS:
03.67.Pp, 03.65.Yz, 03.67.Lx, 07.05.Dz
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