Dynamically Error-Corrected Gates for Universal Quantum Computation

Abstract

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.

5 pages, 3 figures

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• Fault-Tolerant Quantum Dynamical Decoupling
• Arbitrarily accurate composite pulses
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• Distance Bounds on Quantum Dynamics
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Cited by in corpus (3)

• Nuclear Spins in Nanostructures
• Dynamical Quantum Error Correction of Unitary Operations with Bounded Controls
• Quantum Control of d-Dimensional Quantum Systems with Application to Alkali Atomic Spins