Presentation
3 October 2022 Optimal single-error-type entanglement generation via coherent-state transmission (Conference Presentation)
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Abstract
Entanglement is a fundamental resource not only for quantum communication but also for distributed quantum computation. Especially, entanglement including only one type of error is favorable, compared with one including multiple types of noise. In this talk, we consider protocol that presents single-error-type entanglement for distant qubits via coherent-state transmission over lossy channels. This protocol is considered to be a subroutine to serve entanglement for larger protocol to yield a final output, such as ebits or pbits. A protocol based on remote non-destructive parity measurement (RNPM) [K. Azuma, H. Takeda, M. Koashi, and N. Imoto, Phys. Rev. A 85, 062309 (2012)] is identified as a subroutine which achieves the global optimal for typical yield functions monotonically non-decreasing with respect to the singlet fraction, such as an arbitrary convex function of a singlet fraction and two-way distillable entanglement/key.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Koji Azuma "Optimal single-error-type entanglement generation via coherent-state transmission (Conference Presentation)", Proc. SPIE PC12238, Quantum Communications and Quantum Imaging XX, PC1223809 (3 October 2022); https://doi.org/10.1117/12.2633279
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KEYWORDS
Quantum communications

Nondestructive evaluation

Quantum computing

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