TY - GEN
T1 - Reliability of the beamsplitter based Bell-state measurement
AU - Kim, Yoon Ho
AU - Grice, Warren P.
PY - 2005
Y1 - 2005
N2 - A linear 50/50 beamsplitter, 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 |ψ (-)〉. In this paper, we demonstrate that the coincidence measurement at the output of a beamsplitter cannot be used as an absolute identifier of the input state |ψ(-)〉 nor as an indication that the input photons have projected to the |(-)〉 state.
AB - A linear 50/50 beamsplitter, 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 |ψ (-)〉. In this paper, we demonstrate that the coincidence measurement at the output of a beamsplitter cannot be used as an absolute identifier of the input state |ψ(-)〉 nor as an indication that the input photons have projected to the |(-)〉 state.
UR - http://www.scopus.com/inward/record.url?scp=27144444396&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:27144444396
SN - 1557527962
T3 - Quantum Electronics and Laser Science Conference (QELS)
SP - 1132
EP - 1134
BT - 2005 Quantum Electronics and Laser Science Conference (QELS)
T2 - 2005 Quantum Electronics and Laser Science Conference (QELS)
Y2 - 22 May 2005 through 27 May 2005
ER -