Past of a quantum particle revisited

• Main Authors: Englert, Berthold-Georg, Horia, Kelvin, Dai, Jibo, Len, Yink Loong, Ng, Hui Khoon
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2018
• Subjects: Quantum Mechanical; Particle Beams
• Online Access: https://hdl.handle.net/10356/82915; http://hdl.handle.net/10220/45036
• Institution: Nanyang Technological University

We analyze Vaidman's three-path interferometer with weak path marking [L. Vaidman, Phys. Rev. A 87, 052104 (2013)] and find that common sense yields correct statements about the particle's path through the interferometer. This disagrees with the original claim that the particles have disco...