Unlocking quantum precision: Expanded superconducting strips for enhanced photon-counting accuracy
Using single photons as qubits has become a prominent strategy in quantum information technology. Accurately determining the number of photons is crucial in various quantum systems, including quantum computation, quantum communication, and quantum metrology. Photon-number-resolving detectors (PNRDs) play a vital role in achieving this accuracy and have two main performance indicators: resolving fidelity, which measures the probability of accurately recording the number of incident photons, and dynamic range, which describes the maximum resolvable photon number.
Superconducting nanostrip single-photon detectors (SNSPDs) are considered the leading ...










