Warranty Deed of F LeCocq Jr. and Rhoda LeCocq, March 4, 1892

Warranty Deed of F LeCocq Jr. and wife Rhoda, signed March 4, 1892, to F. LeCocq Sr., relating to Lot 12 in Block 12 in the town of Harrison, Douglas County.https://nwcommons.nwciowa.edu/franklecocqjr/1009/thumbnail.jp

A Sketch of Dutch Medical History up to the Nineteenth Century, n.d.

A large essay on the topic which the title suggests. Contact our archives for more information, as there are many pages and only the first page has been scanned in thus far.https://nwcommons.nwciowa.edu/lecocqdescendants/1012/thumbnail.jp

Newspaper Public Sale Announcement, November 18, 1910

Newspaper announcement describing the upcoming Public Sale of F. LeCocq Jr.\u27s farm equipment and cattle.https://nwcommons.nwciowa.edu/franklecocqjr/1018/thumbnail.jp

Mortgage Contract of F LeCocq Sr. and Maria LeCocq, September, 1901

Contract detailing a real estate mortgage signed by F. LeCocq, Sr. for a property in Douglas County, SD.https://nwcommons.nwciowa.edu/franklecocqsr/1005/thumbnail.jp

Newspaper article by Hon. F. LeCocq, Jr., December 25, 1907

Article describing the Brief History of the Fraudulent Organization of Douglas County written by Frank LeCocq, Jr.https://nwcommons.nwciowa.edu/franklecocqjr/1017/thumbnail.jp

Post office receipt from F LeCocq, Sr. to Henry Hospers, June 17, 1886

Receipt describing the receipt of a letter addressed to Henry Hospers, Orange City, Iowa, sent by F LeCocq, Sr., Harrison, Dakota.https://nwcommons.nwciowa.edu/franklecocqsr/1014/thumbnail.jp

Quantum nondemolition measurement of a nonclassical state of a massive object

While quantum mechanics exquisitely describes the behavior of microscopic systems, one ongoing challenge is to explore its applicability to systems of larger size and mass. Unfortunately, quantum states of increasingly macroscopic objects are more easily corrupted by unintentional measurements from the classical environment. Additionally, even the intentional measurements from the observer can further perturb the system. In optomechanics, coherent light fields serve as the intermediary between the fragile mechanical states and our inherently classical world by exerting radiation pressure forces and extracting mechanical information. Here we engineer a microwave cavity optomechanical system to stabilize a nonclassical steady-state of motion while independently, continuously, and nondestructively monitoring it. By coupling the motion of an aluminum membrane to two microwave cavities, we separately prepare and measure a squeezed state of motion. We demonstrate a quantum nondemolition (QND) measurement of sub-vacuum mechanical quadrature fluctuations. The techniques developed here have direct applications in the areas of quantum-enhanced sensing and quantum information processing, and could be further extended to more complex quantum states.Comment: 9 pages, 6 figure