Despite their advantages, SNSPDs face several challenges: - Cryogenic Cooling: The requirement for extremely low temperatures limits their portability and increases operational costs. - Fabrication Complexity: Producing nanowires with consistent quality and dimensions requires advanced fabrication techniques, which can be costly and time-consuming. - Scalability: Integrating large arrays of SNSPDs for practical applications is challenging due to the need for precise alignment and control of individual detectors.
