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Quantum Information Processing

Multi-party quantum key agreement with five-qubit brown states

  • 01-05-2018
Published in:
Authors
Tao Cai
Min Jiang
Gang Cao
Published in
Quantum Information Processing | Issue 5/2018

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Abstract

In this paper, we propose a multi-party quantum key agreement protocol with five-qubit brown states and single-qubit measurements. Our multi-party protocol ensures each participant to contribute equally to the agreement key. Each party performs three single-qubit unitary operations on three qubits of each brown state. Finally, by measuring brown states and decoding the measurement results, all participants can negotiate a shared secret key without classical bits exchange between them. With the analysis of security, our protocol demonstrates that it can resist against both outsider and participant attacks. Compared with other schemes, it also possesses a higher information efficiency. In terms of physical operation, it requires single-qubit measurements only which weakens the hardware requirements of participant and has a better operating flexibility.

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previous article High-dimensional cryptographic quantum parameter estimation
next article Recurrent neural network approach to quantum signal: coherent state restoration for continuous-variable quantum key distribution
Title
Multi-party quantum key agreement with five-qubit brown states
Authors
Tao Cai
Min Jiang
Gang Cao
Publication date
01-05-2018
Publisher
Springer US
Published in
Quantum Information Processing / Issue 5/2018
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-018-1871-4
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Correspondence between quantization schemes for two-player nonzero-sum games and CNOT complexity

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Recurrent neural network approach to quantum signal: coherent state restoration for continuous-variable quantum key distribution