Dynamically Error-Corrected Gates for Universal Quantum Computation

Details Dynamically Error-Corrected Gates for Universal Quantum Computation Dynamically Error-Corrected Gates for Universal Quantum Computation

2008-10-03

arxiv.org/abs/0810.0698v2

Phys.Rev.Lett.102:080501,2009

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.102.080501

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.

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