Lorenza Viola

Dynamically error-corrected gates for accurate quantum control and computation
(Monday, 25 August, 11:15-12:00)

Abstract:

Achieving accurate control over quantum dynamics is a long-sought goal in a variety of quantum physics, chemistry, and engineering settings as well as in quantum information processing applications. Scalable quantum computation in realistic devices, in particular, requires that precise control can be implemented efficiently in the presence of decoherence and operational errors. In this talk, I will present a 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 control under realistic constraints and may prove instrumental to reduce implementation requirements for fault-tolerant quantum computing architectures. Illustrative examples will be discussed throughout.