ar X iv : q ua nt - p h / 03 05 14 4 v 2 8 Ju l 2 00 3 How to Build Unconditionally Secure Quantum Bit Commitment Protocols ∗
نویسنده
چکیده
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 four types. Reasons for some previously failed attempts at obtaining secure protocols are also indicated.
منابع مشابه
ar X iv : q ua nt - p h / 07 02 07 4 v 1 7 F eb 2 00 7 QBC 3 : An Unconditionally Secure Quantum Bit Commitment Protocol
This article describes an unconditionally secure quantum bit commitment protocol, QBC3, based on entanglement destruction via forced measurements. Some comments on the current status of the field are also made.
متن کاملua nt - p h / 07 02 07 4 v 4 1 9 M ar 2 00 7 QBC 3 : An Unconditionally Secure Quantum Bit Commitment Protocol
This article describes a quantum bit commitment protocol, QBC3, based on entanglement destruction via forced measurements and proves its unconditional security. Some comments on the current status of the field are also made.
متن کاملua nt - p h / 07 02 07 4 v 3 9 M ar 2 00 7 QBC 3 : An Unconditionally Secure Quantum Bit Commitment Protocol
This article describes a quantum bit commitment protocol, QBC3, based on entanglement destruction via forced measurements and proves its unconditional security. Some comments on the current status of the field are also made.
متن کاملua nt - p h / 02 07 08 9 v 2 1 9 Ju l 2 00 2 Quantum bit commitment and unconditional security Horace
It is generally believed that unconditionally secure quantum bit commitment is impossible, due to widespread acceptance of an impossibility proof that utilizes quantum entaglement cheating. In this paper, we delineate how the impossibiliy proof formulation misses various types of quantum bit commitment protocols based on two-way quantum communications. We point out some of the gaps in the impos...
متن کاملua nt - p h / 02 07 08 9 v 1 1 6 Ju l 2 00 2 Quantum bit commitment and unconditional security
It is generally believed that unconditionally secure quantum bit commitment is impossible, due to widespread acceptance of an impossibility proof that utilizes quantum entaglement cheating. In this paper, we delineate how the impossibiliy proof formulation misses various types of quantum bit commitment protocols based on two-way quantum communications. We point out some of the gaps in the impos...
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