High-fidelity quantum operations on superconducting qubits in the presence of noise
arXiv:0801.0761 · doi:10.1103/PhysRevLett.101.070501
Abstract
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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- Switchable ultrastrong coupling in circuit QED
- Tuning the Gap of a Superconducting Flux Qubit
- Tunable coupling in circuit quantum electrodynamics with a superconducting V-system
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- A metastable superconducting qubit
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