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I think the defects of light quantum are actually obvious, you can't steal information but you can interrupt your information transmission, you can't solve the secret but you can't receive any information, and the future research direction is likely to be a breakthrough in quantum quality.
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I feel that the quantum era will expose the location of data. Quantum encrypted communication regardless of modem and demodulation obviously requires a separate terminal, where these data are exposed, and through an attack on the terminal, the cryptography can be deciphered.
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The quantum age is a great era, an era of all-scientific true knowledge, and an era in which the people can understand the truth and be able to improve themselves and emancipate themselves.
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I am very optimistic, I read on the Internet that quantum financial communication, it has extremely high requirements for the verifiability of information sources, but the confidentiality requirements are not so high, because it not only requires security, but also requires extremely high traceability.
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I feel very good, theoretically light can circle the earth 7 and a half times in one second, but we **a** are casual for hours. It's not because the speed of light isn't enough, but with today's electronic technology, it takes a lot of time to read the information transmitted by light.
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The quantum era is still far away, I remember that in the sixties and seventies, digitization and large-scale circuits were just formed, and it took almost half a century of development to get to where we are today. No matter how fast the quantum age is, it will take twenty or thirty years.
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At this stage, quantum is a new qigong of science and technology – no one can say exactly what it is and what it can be used for.
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