Researchers use quantum mechanics to see objects without looking at them

https://phys.org/news/2022-12-quantum-mechanics.html

"transmon devices, large superconducting circuits that show quantum behavior...  detect microwave pulses generated by classical instruments... added quantumness using higher energy level of transmon... quantum coherence of resulting system as resource... diagnosing microwave-photon states in memory elements... extracting information without disturbing the quantum processor... communication between two parties without physical particles transferred... computation result obtained without running computer"