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arXiv quant-ph/0606158quant-phcond-mat.mes-hall
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通过连续测量校正低频噪声

Correcting low-frequency noise with continuous measurement

L. Tian

摘要:

低频噪声是固态量子比特退相干的一个严重来源。当与本征态的连续弱测量相结合时,低频噪声引起量子比特态之间的二阶弛豫。在这里,我们表明,松弛提供了一种独特的方法来校准低频噪声在时域中。通过用交替校准的两个物理量子比特编码一个量子比特,可以执行具有高保真度的量子逻辑门。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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