概念是数学的，不是物理的，而物理的量子位在应用中存在本质性的概念问题，包括无法读写，需要无穷大的精度，与经典熵

的定义矛盾，等等.

discrepancies between them. In the context of quantum information，the definition of quantum bit is purely mathematical，

which greatly differs from its physical properties. Major differences include: the readability and writeability

of the qubit; the requirement of inifinit procision in typical algrorithms such as Shor’s algorithm; voilation of

classic entropy definition，etc