Comment on "Scheme of the arrangement for attack on the protocol BB84"
Comment on "Scheme of the arrangement for attack on the protocol BB84"
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评论《针对BB84协议的攻击安排方案》
DOI:
10.1016/j.ijleo.2021.167451
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发表时间:
2021
期刊:
影响因子:
3.1
通讯作者:
Hance J
中科院分区:
文献类型:
--
作者:
Hance J
In a recent paper (Khokhlov, 2016), a protocol was proposed for using weak measurement to attack BB84. This claimed the four basis states typically used could be perfectly discriminated, and so an interceptor could obtain all information carried. We show this attack fails when considered using standard quantum mechanics, as expected — such “single-shot” quantum state discrimination is impossible, even using weak measurement.