Imprinting the quantum : Measurement as a route to novel quantum behavior by Mukund Vengalattore
Mukund Vengalattore Cornell University, Department of Physics
Host: Prof. Matthew LaHaye / Contact: Yudaisy Salomón Sargentón, 315-443-5960
202 Physics Bldg.
The act of measurement can have profound consequences on a quantum system. As such, a quantum system can be controlled and coaxed into novel behavior through the continuous measurement of its properties. I will describe our experimental studies on the measurement-induced quantum control of systems ranging from nanoKelvin atomic gases to millimeter-scale optomechanical systems. In the former case, we show that the quantum evolution of ultracold atomic gases can be controlled and even completely frozen by sporadic measurements - a manifestation of the Quantum Zeno effect. Extending such studies to regimes of dynamically and spatially controlled measurements, we show the emergence of novel phase transitions and critical behavior in the ultracold gas. I will extend these insights to macroscopic optomechanical systems and discuss continuous measurement schemes that allow the quantum state preparation, manipulation and control of macroscopic resonators for applications to quantum sensor technologies and quantum information processing.
Professor Mukund Vengalattore is an experimentalist who works in the area of ultra-cold atomic gases and hybrid quantum systems. His talk this week will focus on quantum measurement, including his group’s work on demonstrating the quantum zeno effect with atomic gases and related efforts underway to implement measurement-induced quantum control of optomechanical systems. His abstract and title are pasted below. (Please see the following link for a description of his research and a link to an interview in which he discusses the quantum Zeno effect http://ultracold.lassp.cornell.edu/.