Method for executing a quantum bit commitment protocol

摘要

Provided are a method and system for implementing a quantum bit delegation protocol. According to an embodiment of the present invention, there is provided a method according to an embodiment of the present invention, in which a second subject, which is a receiver of bit information, first selects a quantum state arbitrarily and transmits it to a first subject, which is a sender of bit information, and a quantum in which the first subject is received. A bit delegation step of combining bit information into a quantum state by performing a predetermined unitary transform on the state, and then transmitting a unitary transformed quantum state to a second subject, and receiving the received unitary transformed quantum state for a predetermined period of time. And a holding step of holding, and a publishing step in which the first subject informs the second subject of the delegated bit information by providing the second subject with information about the unitary transformation. The publishing step may include a verification process for verifying that the bit information informed by the first subject is the same as the bit information delegated in the bit delegation step. For example, a quantum state obtained by performing an inverse transform of the unitary transform is pre-operated. Verification can be performed by checking whether the quantum state is identical to;Quantum Bit Commitment, Quantum Communication, Non-relativistic Scheme, Unitary Transformation