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Unconditional verification of quantum computation with classical light

Quantum Physics 2024-04-01 v2 Optics

Abstract

Verification of quantum computation is a task to efficiently check whether an output given from a quantum computer is correct. Existing verification protocols conducted between a quantum computer to be verified and a verifier necessitate quantum communication to unconditionally detect any malicious behavior of the quantum computer solving any promise problem in BQP{\sf BQP}. In this paper, we remove the necessity of the communication of qubits by proposing a "physically classical" verification protocol in which the verifier just sends coherent light to the quantum computer.

Keywords

Cite

@article{arxiv.2403.14142,
  title  = {Unconditional verification of quantum computation with classical light},
  author = {Yuki Takeuchi and Akihiro Mizutani},
  journal= {arXiv preprint arXiv:2403.14142},
  year   = {2024}
}

Comments

13 pages, 2 figures, v2: Improved the presentation throughout and fixed an error in the proof of the soundness in Sec. III (The results are unchanged except for that the value of $m$ is slightly increased.)

R2 v1 2026-06-28T15:28:15.376Z