标题： 纠缠量子比特对的几何分析 显示英文标题

标题： Geometric analysis of entangled qubit pairs

摘要： 两个纠缠的电子自旋，或量子比特，根据三维空间的几何特性进行分析，以及它们角动量之间的角度。 这种表述方式使得可逆性，一种量子纠缠的度量，可以表示为两个角动量之间方位角的三角函数的期望值。 显示英文摘要

摘要： Two entangled electron spins, or qubits, are analyzed in terms of ordinary three-dimensional space geometric properties, as are the angles between their angular momenta. This formulation allows concurrence, a measure of quantum entanglement, to be expressed as expectation values of trigonometric functions of the azimuthal angle between the two angular momenta.