Summary:
- This article discusses a new type of optical sensor that can detect extremely faint light signals, even down to the level of single photons.
- The sensor uses a technique called "time-resolved photon counting" to precisely measure the arrival time of individual photons, allowing it to detect extremely low-light signals.
- This technology has potential applications in fields like astronomy, quantum communication, and medical imaging, where the ability to detect and measure faint light signals is crucial.