Investigations of quantum sensing techniques for deflection and displacement metrology

standard quantum limit\rquantum measurement\rprecision measurement\rweak measurement\rspatial entanglement\rspontaneous parametric downconversion

Krafczyk, Courtney L.

关键词: standard quantum limit\rquantum measurement\rprecision measurement\rweak measurement\rspatial entanglement\rspontaneous parametric downconversion;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/106160/KRAFCZYK-DISSERTATION-2019.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

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.