Impossibility Proofs and Quantum Bit Commitment

TL;DR

This paper discusses the limitations of quantum bit commitment protocols and proposes methods to achieve security by testing for cheating entanglement, challenging previous impossibility results.

Contribution

It introduces a testing approach that exploits multiple cheating entanglement possibilities to secure quantum bit commitment, addressing known impossibility proofs.

Findings

Quantum bit commitment can be secured using testing for cheating entanglement

Impossibility proofs have limitations when testing strategies are employed

Proposes a practical approach to overcome theoretical security barriers

Abstract

The nature and scope of various impossibility proofs as they relate to real-world situations are discussed. In particular, it is shown in words without technical symbols how secure quantum bit commitment protocols may be obtained with testing that exploits the multiple possibilities of cheating entanglement formation.