Decoherence suppression for oscillator-assisted geometric quantum gates via symmetrization

Li-Xiang Cen, Paolo Zanardi
2005 Physical Review A. Atomic, Molecular, and Optical Physics  
We propose a novel symmetrization procedure to beat decoherence for oscillator-assisted quantum gate operations. The enacted symmetry is related to the global geometric features of qubits transformation based on ancillary oscillator modes, e.g. phonons in an ion-trap system. It is shown that the devised multi-circuit symmetrized evolution endows the system with a two-fold resilience against decoherence: insensitivity to thermal fluctuations and quantum dissipation.
doi:10.1103/physreva.71.060307 fatcat:7xaxlnzfuzbg7ars3bropthyzm