Confidence and backaction in the quantum filter equation
Confidence and backaction in the quantum filter equation
复制标题
量子滤波器方程中的置信度和反作用
DOI:
10.1103/physreva.86.052320
复制
发表时间:
2012-07
影响因子:
2.9
通讯作者:
Nori, Franco
中科院分区:
文献类型:
--
作者:
Cui, Wei;Lambert, Neill;Ota, Yukihiro;Lu, Xin-You;Xiang, Z. -L.;You, J. Q.;Nori, Franco
We study the confidence and backaction of state reconstruction based on a continuous weak measurement and the quantum filter equation. As a physical example we use the traditional model of a double quantum dot being continuously monitored by a quantum point contact. We examine the confidence of the estimate of a state constructed from the measurement record, and the effect of backaction of that measurement on that state. Finally, in the case of general measurements we show that using the relative entropy as a measure of confidence allows us to define the lower bound on the confidence as a type of quantum discord.
DOI:
10.1007/978-3-540-47620-7
发表时间:
1993
期刊:
--
影响因子:
--
作者:
H. Carmichael
通讯作者:
H. Carmichael
DOI:
10.1016/s1474-6670(17)63541-9
发表时间:
1981-08
期刊:
IFAC Proceedings Volumes
影响因子:
--
作者:
J. Baras;G. Blankenship;S. Mitter
通讯作者:
J. Baras;G. Blankenship;S. Mitter
影响因子:
3.5
作者:
C. Kiefer
通讯作者:
C. Kiefer