Journal
QUANTUM INFORMATION PROCESSING
Volume 17, Issue 12, Pages -Publisher
SPRINGER
DOI: 10.1007/s11128-018-2109-1
Keywords
Authenticated semiquantum dialogue; Delegated quantum computation; Collective-dephasing noise; Collective-rotation noise; Unitary collective noise
Funding
- National Key RAMP
- D Program of China [2017YFB0802300]
- Foundation Science and Forefront Technology of Chongqing Science and Technology Commission of China [cstc2016jcyjA0571]
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Semiquantum communication permits a communication party with only limited quantum ability (i.e., classical ability) to communicate securely with a powerful quantum counterpart and will obtain a significant advantage in practice when the completely quantum world has not been built up. At present, various semiquantum schemes for key distribution, secret sharing and secure communication have been proposed. In a quantum dialogue (QD) scenario, two communicants mutually transmit their respective secret messages and may have equal power (such as two classical parties). Based on delegated quantum computation model, this work extends the original semiquantum model to the authenticated semiquantum dialogue (ASQD) protocols, where two classical participants can mutually transmit secret messages without any information leakage and quantum operations are securely delegated to a quantum server. To make the proposed ASQD protocols more practical, we assume that the quantum channel is a collective noise channel and the quantum server is untrusted. The security analysis shows that the proposed protocols are robust even when the delegated quantum server is a powerful adversary.
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