Entangled Qubit States and Linear Entropy in the Probability Representation of Quantum Mechanics

被引：10

作者：

Chernega, Vladimir N. ^{[1
]}

Man'ko, Olga, V ^{[1
]}

Man'ko, Vladimir, I ^{[1
,2
]}

机构：

[1] Russian Acad Sci, Lebedev Phys Inst, Leninskii Prospect 53, Moscow 119991, Russia

[2] Russian Quantum Ctr, Moscow 143025, Russia

来源：

ENTROPY | 2022年 / 24卷 / 04期

基金：

俄罗斯科学基金会;

关键词：

probability distributions; Bell states; qubits; symplectic tomogram; linear entropy; STAR PRODUCTS; DISTRIBUTIONS; COHERENT;

D O I：

10.3390/e24040527

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The superposition states of two qubits including entangled Bell states are considered in the probability representation of quantum mechanics. The superposition principle formulated in terms of the nonlinear addition rule of the state density matrices is formulated as a nonlinear addition rule of the probability distributions describing the qubit states. The generalization of the entanglement properties to the case of superposition of two-mode oscillator states is discussed using the probability representation of quantum states.

引用

页数：20

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