TY - JOUR
T1 - Experimental demonstration of high two-photon time-energy entanglement
AU - Ali Khan, Irfan
AU - Howell, John C.
PY - 2006
Y1 - 2006
N2 - We report on the experimental demonstration of high energy-time entanglement in two-photon states created in the process of spontaneous parametric down-conversion. We show that the classical variance product, which we violate by three orders of magnitude, actually represents a lower bound estimate of the number of information eigenmodes K. Explicit measurements estimate K to be greater than 100, with theoretical estimates predicting a value of as high as 1× 106. These results provide incentive for the practical feasibility of large bandwidth quantum information processing, particularly in cryptography over large distances.
AB - We report on the experimental demonstration of high energy-time entanglement in two-photon states created in the process of spontaneous parametric down-conversion. We show that the classical variance product, which we violate by three orders of magnitude, actually represents a lower bound estimate of the number of information eigenmodes K. Explicit measurements estimate K to be greater than 100, with theoretical estimates predicting a value of as high as 1× 106. These results provide incentive for the practical feasibility of large bandwidth quantum information processing, particularly in cryptography over large distances.
UR - http://www.scopus.com/inward/record.url?scp=33644670709&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.73.031801
DO - 10.1103/PhysRevA.73.031801
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:33644670709
SN - 1050-2947
VL - 73
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 3
M1 - 031801
ER -