论文标题
容错的量子数据锁定
Fault tolerant quantum data locking
论文作者
论文摘要
量子数据锁定是一种量子通信原始性，它允许使用简短的秘密键来加密更长的消息。它保证了针对量子内存有限的对手的信息理论安全性。在这里，我们提出了一种量子数据锁定协议，该协议采用了仅由克利福德门组成的伪随机电路，该电路比通用门更容易容忍实现故障。我们表明，可以使用$ n-h_ \ mathrm {minrm {min}（\ Mathsf {x}）$ secret bits的订单将信息加密到$ n $ qubit代码单词中，其中$ h_ \ mathrm {minrm {minrm {marsf {x}）$是平面文本的最小文本和$ nim-entropy the $ nim-entropy的信息。作为应用程序，我们讨论了一种加密量子计算机输出的有效方法。
Quantum data locking is a quantum communication primitive that allows the use of a short secret key to encrypt a much longer message. It guarantees information-theoretical security against an adversary with limited quantum memory. Here we present a quantum data locking protocol that employs pseudo-random circuits consisting of Clifford gates only, which are much easier to implement fault tolerantly than universal gates. We show that information can be encrypted into $n$-qubit code words using order $n - H_\mathrm{min}(\mathsf{X})$ secret bits, where $H_\mathrm{min}(\mathsf{X})$ is the min-entropy of the plain text, and a min-entropy smaller than $n$ accounts for information leakage to the adversary. As an application, we discuss an efficient method for encrypting the output of a quantum computer.
