Optimized protocols for duplex quantum transduction

• URL: http://arxiv.org/abs/2305.15648v3
• Date: Thu, 21 Mar 2024 19:32:21 GMT
• Title: Optimized protocols for duplex quantum transduction
• Authors: Zhaoyou Wang, Mengzhen Zhang, Yat Wong, Changchun Zhong, Liang Jiang,
• Abstract summary: Quantum transducers convert quantum signals through hybrid interfaces of physical platforms in quantum networks. We propose rate regions to characterize the performance of duplex quantum transduction.
• Score: 1.6437645274005803
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum transducers convert quantum signals through hybrid interfaces of physical platforms in quantum networks. Modeled as quantum communication channels, performance of unidirectional quantum transduction can be measured by the quantum channel capacity. However, characterizing performance of quantum transducers used for duplex quantum transduction where signals are converted bidirectionally remains an open question. Here, we propose rate regions to characterize the performance of duplex quantum transduction. Using this tool, we find that quantum transducers optimized for simultaneous duplex transduction can outperform strategies based on the standard protocol of time-shared unidirectional transduction. Integrated over the frequency domain, we demonstrate that rate region can also characterize quantum transducers with finite bandwidth.

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