在一个传统计算机中，任何时刻一个比特被表示为1或0 .由于量子力学的奇怪结果，等价的情形在一个量子计算机中，一个量子比特能够被表示为任意值的叠加。
In a conventional computer, a bit can represent either 1 or 0 at any time. Thanks to the quirks of quantum mechanics, the equivalent in a quantum computer, a qubit, can represent both values at once.
我们现在知道并应用的量子力学是用狄拉克符号表示的。
The quantum theory as we know it and apply it today is as formulated by Dirac.
量子信息利用量子力学的基本原理结合经典信息的性质对信息进行表示和处理。
Quantum information is the use of quantum physics principles and properties of classical information to represent and manipulate information.
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