Investigations of quantum sensing techniques for deflection and displacement metrology

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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2020

Author dc:creator

• Krafczyk, Courtney L.

Contributors dc:contributor

• Kwiat, Paul
• Cooper, Lance
• Vishveshwara, Smitha
• Lorenz, Virginia

• standard quantum limit quantum measurement precision measurement weak measurement spatial entanglement spontaneous parametric downconversion

Statement dc:rights

• Copyright 2019 Courtney Krafczyk

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/106160

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/106160