An international team led by the Institute of Photonic Sciences (ICFO) in Spain has published research results in the journal Science, developing a mid-infrared single-photon detector capable of operating at 25 Kelvin using two-dimensional materials. This technology breaks through traditional low-temperature constraints, bringing new possibilities to fields such as astronomical observation and quantum communication.

The research team discovered that stacking bilayer graphene and hexagonal boron nitride materials exhibits bistable characteristics at specific twist angles. ICREA Professor Frank Koppens stated: "This material shows extraordinary sensitivity to light, and we have confirmed that it can detect individual photons." Experiments show that the detector can respond to photons with wavelengths extending to the mid-infrared band, with an operating principle similar to a "critical point trigger" mechanism.

Professor Pablo Jarillo-Herrero from MIT pointed out: "This research demonstrates the dual value of moiré quantum devices in basic research and practical applications." The team is currently working on optimizing the device structure to increase the operating temperature and promote practical applications of the technology. The European Space Agency has expressed interest in this technology, considering its potential applications in space exploration.