Experimental quantum secret sharing based on phase encoding of coherent
states
- URL: http://arxiv.org/abs/2303.14622v2
- Date: Tue, 28 Mar 2023 03:55:15 GMT
- Title: Experimental quantum secret sharing based on phase encoding of coherent
states
- Authors: Ao Shen, Xiao-Yu Cao, Yang Wang, Yao Fu, Jie Gu, Wen-Bo Liu, Chen-Xun
Weng, Hua-Lei Yin, Zeng-Bing Chen
- Abstract summary: We propose a quantum secret sharing protocol with simple phase encoding of coherent states among three parties.
Our scheme achieves a key rate of 85.3 bps under a 35 dB channel loss.
- Score: 17.01107355316032
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum secret sharing (QSS) is one of the basic communication primitives in
future quantum networks which addresses part of the basic cryptographic tasks
of multiparty communication and computation. Nevertheless, it is a challenge to
provide a practical QSS protocol with security against general attacks. A QSS
protocol that balances security and practicality is still lacking. Here, we
propose a QSS protocol with simple phase encoding of coherent states among
three parties. Removing the requirement of impractical entangled resources and
the need for phase randomization, our protocol can be implemented with
accessible technology. We provide the finite-key analysis against coherent
attacks and implement a proof-of-principle experiment to demonstrate our
scheme's feasibility. Our scheme achieves a key rate of 85.3 bps under a 35 dB
channel loss. Combined with security against general attacks and accessible
technology, our protocol is a promising candidate for practical multiparty
quantum communication networks.
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