Measurement of the Noise Spectrum Using a Multiple-Pulse Sequence
Quantum Physics
2015-05-28 v2 Statistical Mechanics
Abstract
A method is proposed for obtaining the spectrum for noise that causes the phase decoherence of a qubit directly from experimentally available data. The method is based on a simple relationship between the spectrum and the coherence time of the qubit in the presence of a pi-pulse sequence. The relationship is found to hold for every system of a qubit interacting with the classical-noise, bosonic, and spin baths.
Cite
@article{arxiv.1105.1594,
title = {Measurement of the Noise Spectrum Using a Multiple-Pulse Sequence},
author = {Tatsuro Yuge and Susumu Sasaki and Yoshiro Hirayama},
journal= {arXiv preprint arXiv:1105.1594},
year = {2015}
}
Comments
8 pages (4 pages + 4 pages Supplemental material), 1 figure