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数字通信和数字信号处理领域的快速发展直接推动了20世纪后半叶兴起的信息革命。今天的数字信息系统仍然只在经典物理范畴。每一个比特的信息都能完全被经典器件描述,比如用一个晶体管或者微处理器的输入电压高低来代表0或者1。然而,信息也能通过量子力学方式处理和传输,这就产
The rapid development in digital communications and digital signal processing has directly contributed to the information revolution that started in the second half of the 20th century. Today’s digital information system is still only in the classical physics category. Each bit of information can be completely classical device description, such as a transistor or microprocessor input voltage level to represent 0 or 1. However, information can also be processed and transmitted through quantum mechanics, which produces