Impossibility Proofs and Quantum Bit Commitment
نویسنده
چکیده
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.
منابع مشابه
Unconditionally Secure Quantum Bit Commitment Is Possible
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The “impossibility proof” on unconditionally secure quantum bit commitment is critically analyzed. Many possibilities for obtaining a secure bit commitment protocol are indicated, purely on the basis of two-way quantum communications, which are not covered by the impossibility proof formulation. They are classified under six new types of protocols, with security proofs for specific examples on ...
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Bit commitment involves the submission of evidence from one party to another so that the evidence can be used to confirm a later revealed bit value by the first party, while the second party cannot determine the bit value from the evidence alone. It is widely believed that unconditionally secure quantum bit commitment is impossible due to quantum entanglement cheating, which is codified in a ge...
متن کاملHow Unconditionally Secure Quantum Bit Commitment Is Possible
Bit commitment involves the submission of evidence from one party to another so that the evidence can be used to confirm a later revealed bit value by the first party, while the second party cannot determine the bit value from the evidence alone. It is widely believed that unconditionally secure quantum bit commitment is impossible due to quantum entanglement cheating, which is codified in a ge...
متن کاملMaking An Empty Promise With A Quantum Computer (Or, A Brief Review on the Impossibility of Quantum Bit Commitment)
The desire to obtain an unconditionally secure bit commitment protocol in quantum cryptography was expressed for the rst time thirteen years ago. Bit commitment is suucient in quantum cryptography to realize a variety of applications with unconditional security. In 1993, a quantum bit commitment protocol was proposed together with a security proof. However, a basic aw in the protocol was discov...
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تاریخ انتشار 2008