Applications of correlated photon pairs : sub-shot noise interferometry and entanglement
Name
72463951-MIT.pdf
Description
Full printable version
Size
3.97 MB
Format
Adobe PDF
Checksum (MD5)
d9ed29e512e25ceaf881dcc372567a06
Author(s)
Loh, Huanqian
Advisor(s)
Vladan Vuletić.
Date Issued
2006
Publisher
Massachusetts Institute of Technology
Abstract
Using cesium atoms weakly coupled to a low-finesse cavity, we have generated photon pairs that are highly correlated in a non-classical way, as demonstrated by a large violation of the Cauchy-Schwartz inequality G = 760 +2100 -320 for a bin width T = 60 ns. Biphoton interferometry of the correlated pairs via the Holland-Burnett scheme holds promise to demonstrate precision beyond the shot noise limit, although the current interference fringe visibility of [beta]= 0.84 ± 0.04 only translates to a shot noise limited phase uncertainty. Polarization-time entangled pairs can also be directly generated, by optically pumping the atoms to both F = 3, mF = ±3 ground states. The degree of entanglement, expressed by the calculated fidelity f = 0.81 ± 0.09 and calculated Bell state parameter S = 2.3 ± 0.2, is estimated to be finite but not maximal.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2006.
Includes bibliographical references (p. 89-95).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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