Determination of the full statistics of quantum observables using the maximum-entropy method
Determination of the full statistics of quantum observables using the maximum-entropy method
复制标题
使用最大熵方法确定量子可观测量的完整统计量
DOI:
10.1103/physreva.98.053857
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发表时间:
2018
影响因子:
2.9
通讯作者:
J. Wiersig
中科院分区:
文献类型:
--
作者:
B. Gulyak;B. Melcher;J. Wiersig
Numerical methods for the description of nonequilibrium many-particle quantum systems such as equation of motion techniques often cannot compute the full statistics of observables but only moments of it, such as mean, variance, and higher order moments. We employ here the maximum-entropy method to numerically construct unbiased statistics based on the knowledge of moments. We verify the feasibility of the proposed method by numerical simulation of a simple birth-death model for quantum-dot-microcavity lasers, where the full photon and carrier statistics are available for comparison. We show that not only the constructed statistics but also the computed entropy and the Lagrange multipliers, which appear here as a by-product, provide valuable insight into the physics of the considered system. For example, the entropy reveals that, in contrast to common wisdom, the photon statistics of the microcavity laser above threshold is better described by a Gaussian distribution than by a Poisson distribution. Our approach is general and can be applied to many other systems emerging in physics and related fields.
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影响因子:
3.8
作者:
C. Gies;M. Florian;P. Gartner;F. Jahnke
通讯作者:
F. Jahnke
DOI:
10.1140/epjb/e2006-00164-3
发表时间:
2006
期刊:
The European Physical Journal B - Condensed Matter and Complex Systems
影响因子:
--
作者:
N. Baer;C. Gies;J. Wiersig;F. Jahnke
通讯作者:
F. Jahnke
DOI:
10.1016/j.cpc.2016.10.010
发表时间:
2017
期刊:
Comput. Phys. Commun.
影响因子:
--
作者:
A. Foerster;H. Leymann;J. Wiersig
通讯作者:
J. Wiersig
DOI:
10.1137/120901386
发表时间:
2013
期刊:
SIAM/ASA J. Uncertain. Quantification
影响因子:
--
作者:
A. Batou;Christian Soize
通讯作者:
Christian Soize
影响因子:
2.9
作者:
H.A.M. Leymann;C. Hopfmann;F. Albert;A. Foerster;M. Khanbekyan;C. Schneider;S. Höfling;A. Forchel;M. Kamp;J. Wiersig;S. Reitzenstein
通讯作者:
S. Reitzenstein