The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), is seeking information from potential vendors regarding the procurement of Superconducting Nanowire Single Photon Detectors (SNSPD). This Sources Sought Notice aims to identify capable suppliers who can provide these advanced detectors, which are critical for various applications in quantum computing and photonics research. The SNSPDs are essential for enhancing measurement capabilities in analytical laboratory settings, particularly in the field of laboratory equipment and supplies. Interested parties are encouraged to reach out to Jenna Bortner at jenna.bortner@nist.gov or Tracy Retterer at Tracy.retterer@nist.gov for further information regarding this opportunity.