High-fidelity quantum operations on superconducting qubits in the presence of noise

Details High-fidelity quantum operations on superconducting qubits in the presence of noise High-fidelity quantum operations on superconducting qubits in the presence of noise

2008-01-06

arxiv.org/abs/0801.0761v2

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.101.070501

We present a scheme for implementing quantum operations with superconducting qubits. Our approach uses a "coupler" qubit to mediate a controllable, secular interaction between "data" qubits, pulse sequences which strongly mitigate the effects of 1/f flux noise, and a high-Q resonator-based local memory. We develop a Monte-Carlo simulation technique capable of describing arbitrary noise-induced dephasing and decay, and demonstrate in this system a set of universal gate operations with O(10^-5) error probabilities in the presence of experimentally measured levels of 1/f noise. We then add relaxation and quantify the decay times required to maintain this error level.

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