Using sequences of pulses to control coherence in an open quantum computing system

摘要

A method for quantum control of coherence in an open quantum computing system is presented. The approach was applied to finding a suitable control sequence for maintaining coherence in a silicon-based nuclear spin quantum computing system, subject to Bose-type environmental noise, and under the Born-Markovian and rotating wave approximations. It is shown that the evolution operator remains decoherence free while the three control pulses are being applied.