TY - JOUR
T1 - Advantage of quantum radar with intensity fluctuations
AU - Chen, Juan
AU - Yang, Song
AU - Zhang, Shengli
N1 - Publisher Copyright:
© 2025 Elsevier B.V.
PY - 2025/12/28
Y1 - 2025/12/28
N2 - Quantum radar is a powerful tool for detecting weak targets. In theory, quantum radar shows a 6 dB quantum advantage in error probability. It is important to determine whether the advantages of a quantum illumination system exist in the presence of intensity fluctuations. We studied the advantages of a typical quantum radar with a two-mode Gaussian quantum entanglement state. By varying the standard deviation of the intensity fluctuation, the advantages of the quantum radar were identified. It is shown that in the weak signal intensity regime, the advantage of the quantum radar will decrease. However, in the strong signal intensity regime, its advantages surpass that of the no-fluctuation case. This contrasts with the intuitive notion that signal fluctuation would introduce distortion into the radar system. Our results serve as proof of the advantage of quantum radar and offer theoretical guidance for the development of more efficient quantum radar systems.
AB - Quantum radar is a powerful tool for detecting weak targets. In theory, quantum radar shows a 6 dB quantum advantage in error probability. It is important to determine whether the advantages of a quantum illumination system exist in the presence of intensity fluctuations. We studied the advantages of a typical quantum radar with a two-mode Gaussian quantum entanglement state. By varying the standard deviation of the intensity fluctuation, the advantages of the quantum radar were identified. It is shown that in the weak signal intensity regime, the advantage of the quantum radar will decrease. However, in the strong signal intensity regime, its advantages surpass that of the no-fluctuation case. This contrasts with the intuitive notion that signal fluctuation would introduce distortion into the radar system. Our results serve as proof of the advantage of quantum radar and offer theoretical guidance for the development of more efficient quantum radar systems.
KW - Intensity fluctuations
KW - Quantum advantage
KW - Quantum radar
UR - https://www.scopus.com/pages/publications/105020259663
U2 - 10.1016/j.physleta.2025.131084
DO - 10.1016/j.physleta.2025.131084
M3 - Article
AN - SCOPUS:105020259663
SN - 0375-9601
VL - 564
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
M1 - 131084
ER -