Realistic Non-Gaussian Receivers for Long Distance Continuous-Variable Quantum Key Distribution
Resumo
Reception strategies based on non-Gaussian detectors can be used to improve the performance of various quantum information processing tasks. In this work, we investigate the performance of two non-Gaussian receivers with imperfect detectors for long distance CV-QKD protocol. We show that both receivers outperform the ideal homodyne detection scheme even under realistic conditions, providing a robust alternative for enhancing long-distance CV-QKD.
Referências
Izumi, S., Neergaard-Nielsen, J. S., Miki, S., Terai, H., and Andersen, U. L. (2020). Experimental demonstration of a quantum receiver beating the standard quantum limit at telecom wavelength. Physical Review Applied, 13:054015.
Kennedy, R. S. (1973). A near-optimum receiver for the binary coherent state quantum channel. Technical Report Quarterly Progress Report No. 108, Massachusetts Institute of Technology, Research Laboratory of Electronics.
Laudenbach, F., Pacher, C., Fung, C.-H. F., Poppe, A., Peev, M., Schrenk, B., Hentschel, M., Walther, P., and Hübel, H. (2018). Continuous-variable quantum key distribution with gaussian modulation—the theory of practical implementations. Advanced Quantum Technologies, 1(1):1870011.
Takeoka, M. and Sasaki, M. (2008). Discrimination of the binary coherent signal: Gaussian-operation limit and simple non-gaussian near-optimal receivers. Physical Review A, 78:022320.
Kennedy, R. S. (1973). A near-optimum receiver for the binary coherent state quantum channel. Technical Report Quarterly Progress Report No. 108, Massachusetts Institute of Technology, Research Laboratory of Electronics.
Laudenbach, F., Pacher, C., Fung, C.-H. F., Poppe, A., Peev, M., Schrenk, B., Hentschel, M., Walther, P., and Hübel, H. (2018). Continuous-variable quantum key distribution with gaussian modulation—the theory of practical implementations. Advanced Quantum Technologies, 1(1):1870011.
Takeoka, M. and Sasaki, M. (2008). Discrimination of the binary coherent signal: Gaussian-operation limit and simple non-gaussian near-optimal receivers. Physical Review A, 78:022320.
Publicado
25/05/2026
Como Citar
LACERDA, Joás J.; MELO, Lucas F.; TACLA, Alexandre B..
Realistic Non-Gaussian Receivers for Long Distance Continuous-Variable Quantum Key Distribution. In: WORKSHOP DE REDES QUÂNTICAS (WQUNETS), 3. , 2026, Praia do Forte/BA.
Anais [...].
Porto Alegre: Sociedade Brasileira de Computação,
2026
.
p. 83-84.
DOI: https://doi.org/10.5753/wqunets.2026.23806.