High-fidelity single-qubit gates using non-adiabatic rapid passage

Authors:
Ran Li;Melique Hoover;Frank Gaitan
Affiliations:
Department of Physics, Southern Illinois University, Carbondale, IL and Department of Physics, Southern Illinois University, Carbondale, IL;Department of Physics, Southern Illinois University, Carbondale, IL and Department of Physics, Southern Illinois University, Carbondale, IL;Department of Physics, Southern Illinois University, Carbondale, IL and Department of Physics, Southern Illinois University, Carbondale, IL
Venue:
Quantum Information & Computation
Year:
2007

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Abstract

Numerical simulation results are presented which suggest that a class of nonadiabatic rapid passage sweeps first realized experimentally in 1991 should be capable of implementing a set of quantum gates that is universal for one-qubit unitary operations and whose elements operate with error probabilities Pe -4. The sweeps are noncomposite and generate controllable quantum interference effects which allow the onequbit gates produced to operate non-adiabatically while maintaining high accuracy. The simulations suggest that the one-qubit gates produced by these sweeps show promise as possible elements of a fault-tolerant scheme for quantum computing.