Correcting low-frequency noise with continuous measurement
量子物理
2011-07-26 v1 介观与纳米尺度物理
摘要
Low-frequency noise presents a serious source of decoherence in solid-state qubits. When combined with a continuous weak measurement of the eigenstates, the low-frequency noise induces a second-order relaxation between the qubit states. Here we show that the relaxation provides a unique approach to calibrate the low-frequency noise in the time-domain. By encoding one qubit with two physical qubits that are alternatively calibrated, quantum logic gates with high fidelity can be performed.
引用
@article{arxiv.quant-ph/0606158,
title = {Correcting low-frequency noise with continuous measurement},
author = {L. Tian},
journal= {arXiv preprint arXiv:quant-ph/0606158},
year = {2011}
}
备注
10 pages, 3 figures, submitted