Open AccessImplementation of quantum state tomography for time-bin entangled photon pairs
Author(s) -
Hiroki Takesue,
Yuita Noguchi
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.010976
Subject(s) - photon entanglement , quantum entanglement , bin , physics , photon , quantum metrology , optics , four wave mixing , w state , interferometry , quantum tomography , quantum optics , quantum sensor , photon polarization , quantum mechanics , quantum , quantum state , quantum network , computer science , nonlinear optics , laser , algorithm
Quantum state tomography (QST) is an important method for evaluating the quality of entangled photon pairs, and has been widely used to measure polarization entanglement. However, QST has not been applied to time-bin entanglement, which is a type of entanglement suitable for fiber transmission. In this paper, we clarify the way to implement QST on time-bin entangled photon pairs using a 1-bit delayed interferometer. We also provide experimental results for a demonstration of QST for time-bin entangled photon pairs generated using spontaneous four-wave mixing in a dispersion shifted fiber.