This 42-minute lecture by Sreenath Kizhakkumpurath Manikandan from the International Centre for Theoretical Sciences explores the detection of single gravitons and methods for probing their acoherence. Delivered as part of the "Quantum Trajectories" program, the talk contributes to a broader initiative addressing central theoretical questions in quantum physics. Learn about cutting-edge research at the intersection of quantum mechanics and gravity, presented during a program organized by Michel Bauer, Cedric Bernardin, Raphael Chetrite, and Abhishek Dhar. The program, held from January 20 to February 7, 2025, at the Ramanujan Lecture Hall in ICTS Bengaluru, focuses on quantum trajectories, quantum control, measurement-induced phase transitions, and quantum information and computation, bringing together theoretical physicists, experimentalists, and mathematicians to foster collaboration in the second quantum revolution.