18 research outputs found
Entanglement detection with minimal tomography using witness bases measurement
Master'sMASTER OF SCIENC
Past of a quantum particle: Common sense prevails
We analyze Vaidman's three-path interferometer with weak path marking [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 discontinuous trajectories at odds with
common sense. In our analysis, "the particle's path" has operational meaning as
acquired by a path-discriminating measurement. For a quantum-mechanical
experimental demonstration of the case, one should perform a single-photon
version of the experiment by Danan et al. [Phys. Rev. Lett. 111, 240402 (2013)]
with unambiguous path discrimination. We present a detailed proposal for such
an experiment.Comment: v1: 20 pages, 15 figures; v2 and v3: 20 pages, 16 figures, text and
figures edited, references update
PAST OF A QUANTUM PARTICLE AND QUANTUM INFORMATION PROCESSING WITH OPEN-SYSTEM NOISE
Ph.DDOCTOR OF PHILOSOPH