Practically secure quantum position verification

Practically secure quantum position verification
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实用安全的量子位置验证

DOI:
10.1088/1367-2630/ac0755
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发表时间:
2021
影响因子:
3.3
通讯作者:
Siopsis, George
Siopsis, George
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Das, Siddhartha;Siopsis, George

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我们讨论了量子位置验证(QPV)协议,其中验证者创建并发送单量子比特状态给证明者。已知使用单量子比特状态的QPV协议对于共享少量纠缠量子比特的对手是不安全的。我们介绍了QPV协议,实际上是安全的:他们只需要从每个验证单量子位状态,但他们的安全性被打破,如果对手共享不切实际的大量纠缠量子位采用基于远程传输的攻击。这些协议是已知的QPV协议的修改,其中我们包括一个经典的随机预言机,而不改变验证者所需的量子资源的量。我们提出了一种作弊策略,需要在对手之间共享的纠缠量子位的数量随随机预言机的经典输入的大小呈指数增长。
We discuss quantum position verification (QPV) protocols in which the verifiers create and send single-qubit states to the prover. QPV protocols using single-qubit states are known to be insecure against adversaries that share a small number of entangled qubits. We introduce QPV protocols that are practically secure: they only require single-qubit states from each of the verifiers, yet their security is broken if the adversaries sharing an impractically large number of entangled qubits employ teleportation-based attacks. These protocols are a modification of known QPV protocols in which we include a classical random oracle without altering the amount of quantum resources needed by the verifiers. We present a cheating strategy that requires a number of entangled qubits shared among the adversaries that grows exponentially with the size of the classical input of the random oracle.
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影响因子: 1.3
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