<p>Hybrid quantum cryptography allows us to securely access quantum devices through classical devices. Despite the numerous achievements in this area, the research on remote pseudorandom state preparation, which is a fundamental cryptography primitive, remains entirely lacking. In this paper, we firstly present a remote pseudorandom state preparation protocol that allows a classical verifier to prepare a pseudorandom quantum state through classical interaction with the quantum prover, and prove that it can protect the privacy of the verifier and avoid cheating from malicious prover. The security of this protocol is based on the hardness of the Learning With Error problem (LWE).</p>

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Remote pseudorandom state preparation with classical communication

  • Tingyu Ge,
  • Mingqiang Wang

摘要

Hybrid quantum cryptography allows us to securely access quantum devices through classical devices. Despite the numerous achievements in this area, the research on remote pseudorandom state preparation, which is a fundamental cryptography primitive, remains entirely lacking. In this paper, we firstly present a remote pseudorandom state preparation protocol that allows a classical verifier to prepare a pseudorandom quantum state through classical interaction with the quantum prover, and prove that it can protect the privacy of the verifier and avoid cheating from malicious prover. The security of this protocol is based on the hardness of the Learning With Error problem (LWE).