Paradoxical consequences of multipath coherence : perfect interaction-free measurements

• Main Authors: Mondal, Subhendu, Paterek, Tomasz, Zhao, Z., Markiewicz, M., Rutkowski, A., Dakić, B., Laskowski, W.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2018
• Subjects: Quantum Mechanics; Paradoxical Consequences; DRNTU::Science::Physics
• Online Access: https://hdl.handle.net/10356/88257; http://hdl.handle.net/10220/45659
• Institution: Nanyang Technological University

Quantum coherence can be used to infer the presence of a detector without triggering it. Here we point out that, according to quantum mechanics, such interaction-free measurements cannot be perfect, i.e., in a single-shot experiment one has strictly positive probability to activate the detector. We...