基于单个超导纳米线单光子探测器的光子数分辨方法
By connecting an inductor in series in a superconducting nanowire single-photon detector and utilizing the rise time or slope of the response pulse, the problem of photon number resolution accuracy in a single superconducting nanowire single-photon detector was solved, achieving high-fidelity photon number resolution with the advantages of simple structure and low cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
- Filing Date
- 2023-01-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to accurately distinguish the number of photons on a single superconducting nanowire single-photon detector, especially since single-photon and multi-photon response signals are difficult to differentiate, leading to a decrease in the fidelity of photon number resolution.
By connecting a series inductor in a superconducting nanowire single-photon detector, the photon number resolution capability is enhanced. The photon number is determined by the rise time or rise slope of the response pulse. Accurate photon number resolution is achieved by combining the readout circuit and the pulse time measurement device.
High-fidelity photon number resolution was achieved on a single superconducting nanowire single-photon detector, with a simple structure, easy implementation, and low cost.
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Figure CN116046184B_ABST