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Kwiat, Paul Cooper, Lance Vishveshwara, Smitha Lorenz, Virginia Krafczyk, Courtney L. 2020-03-02T21:57:59Z 2020-03-02T21:57:59Z 2019-09-26 2019-12 We discuss our effort toward designing experiments to surpass the standard quantum limit in deflection and displacement measurements. First, we review weak measurement techniques, then describe our strategy and results from implementing recycling to measure a beam deflection. We then discuss how spatial correlations emerge from spontaneous parametric downconversion and how we utilize those correlations to improve the achievable resolution of a beam displacement. Finally, we discuss a possible way to use a quantum eraser to improve the signal from an atomic force microscope. Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2020-02-28 without embargo terms The student, Courtney Krafczyk, accepted the attached license on 2019-09-24 at 11:11. The student, Courtney Krafczyk, submitted this Dissertation for approval on 2019-09-24 at 11:26. This Dissertation was approved for publication on 2019-09-26 at 08:36. DSpace SAF Submission Ingestion Package generated from Vireo submission #14471 on 2020-02-28 at 17:11:54 Made available in DSpace on 2020-03-02T21:57:59Z (GMT). No. of bitstreams: 3 KRAFCZYK-DISSERTATION-2019.pdf: 2593945 bytes, checksum: 0c6f2759aa19a129fd76f71d5075f55c (MD5) LICENSE.txt: 4214 bytes, checksum: 17986b0a2f95a4135193b258dba85d14 (MD5) PROQUEST_LICENSE.txt: 4560 bytes, checksum: 6591c235c31934098bb7fd81bd41491b (MD5) Previous issue date: 2019-09-26 application/pdf http://hdl.handle.net/2142/106160 en Copyright 2019 Courtney Krafczyk standard quantum limit quantum measurement precision measurement weak measurement spatial entanglement spontaneous parametric downconversion Investigations of quantum sensing techniques for deflection and displacement metrology text text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.