TY - JOUR
T1 - Reliability of the beam-splitter–based Bell-state measurement
AU - Kim, Yoon Ho
AU - Grice, Warren P.
PY - 2003
Y1 - 2003
N2 - A linear 50-50 beam splitter, together with a coincidence measurement, has been widely used in quantum optical experiments, such as teleportation, dense coding, etc., for interferometrically distinguishing, measuring, or projecting onto one of the four two-photon polarization Bell states [Formula Presented] In this paper, we demonstrate that the coincidence measurement at the output of a beam splitter cannot be used as an absolute identifier of the input state [Formula Presented] nor as an indication that the input photons have been projected to the [Formula Presented] state.
AB - A linear 50-50 beam splitter, together with a coincidence measurement, has been widely used in quantum optical experiments, such as teleportation, dense coding, etc., for interferometrically distinguishing, measuring, or projecting onto one of the four two-photon polarization Bell states [Formula Presented] In this paper, we demonstrate that the coincidence measurement at the output of a beam splitter cannot be used as an absolute identifier of the input state [Formula Presented] nor as an indication that the input photons have been projected to the [Formula Presented] state.
UR - http://www.scopus.com/inward/record.url?scp=85037245526&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.68.062305
DO - 10.1103/PhysRevA.68.062305
M3 - Article
AN - SCOPUS:85037245526
SN - 1050-2947
VL - 68
SP - 4
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 6
ER -