High-quality source of fiber-coupled polarization-entangled photons at 1.56 [mu]m
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Franco N.C. Wong.
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This thesis describes the development of a high-quality source of single-mode fibercoupled polarization-entangled photon pairs based on a collinear spontaneous parametric down-conversion process in a bidirectionally pumped periodically-poled potassium titanyl phosphate (PPKTP) crystal inside a polarization Sagnac interferometer at communication wavelength (1.56 [mu]m). A two-photon quantum interference visibility of 97.1% was measured. In addition to the Sagnac source, a linear Mach-Zehnder source at 810 nm was built for the Interdisciplinary Quantum Information Science and Engineering (iQuISE) teaching laboratory, to allow students to observe fundamental quantum phenomena such as the Hong-Ou-Mandel (HOM) dip, the collapse of a Bell state due to measurement, or the Clauser-Horne-Shimony-Holt (CHSH) inequality violation in a single experimental setup. An HOM dip with a two-photon quantum interference visibility of 80% was demonstrated.
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2012.In title on title page, "[mu]" appears as lower case Greek letter italic. Cataloged from PDF version of thesis.Includes bibliographical references (p. 91-98).
DepartmentMassachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology
Electrical Engineering and Computer Science.