Studies of extreme cases within quantum mechanics have always been particularly attractive. How macroscopic can objects be an d still demonstrate unique quantum features\, such as entanglement? Wh at are the real limits of measurement precision in quantum mechanics? I will review our experiments where macroscopic objects are driven dee p into the quantum regime. Observation of a quantum trajectory of moti on in a quantum reference frame with\, in principle\, unlimited accura cy will be presented. A concept of a reference frame with an effective negative mass required for such observation will be introduced. Gener ation of an entangled Einstein-Podolsky-Rosen state between distant me chanical and atomic oscillators and progress towards application of th ose ideas to gravitational wave detection will be reported. Another ch allenge within quantum physics of macroscopic objects is generation of Fock states corresponding to single quantum excitations of an oscilla tor. Progress along those lines with states of motion and of a macros copic spin will be presented.
\n \nThis event starts at 3:30pm with refreshments\, followed at 3:45pm by a short presentation by Akba r Safari (postdoc Saffman group) titled "Remote atom-atom entanglement and quantum networking". The invited presentation starts at 4pm.
URL:https://www.physics.wisc.edu/events/?id=8101 END:VEVENT END:VCALENDAR