Fault-Tolerant Error Correction with Efficient Quantum Codes

Research paper by David P. DiVincenzo, Peter W. Shor

Indexed on: 23 Aug '96Published on: 23 Aug '96Published in: Quantum Physics


We exhibit a simple, systematic procedure for detecting and correcting errors using any of the recently reported quantum error-correcting codes. The procedure is shown explicitly for a code in which one qubit is mapped into five. The quantum networks obtained are fault tolerant, that is, they can function successfully even if errors occur during the error correction. Our construction is derived using a recently introduced group-theoretic framework for unifying all known quantum codes.