idw – Informationsdienst Wissenschaft
Nachrichten, Termine, Experten
Nachrichten, Termine, Experten
idw - Informationsdienst
Wissenschaft
01/14/2021 - 01/14/2021 | Virtual lecture
As part of the Distinguished Lecturer Series (DLS) at the Max Planck Institute for the Science of Light, Eugene S. Polzik from the Niels Bohr Institute at the University of Copenhagen will talk about quantum mechanics in the negative mass reference frame. Due to the circumstances, the lecture will be held virtually via Zoom.
Abstract:
According to textbook quantum mechanics, a measurement of the position of an object imposes a random quantum back action kick to its momentum. This randomness translates with time into position uncertainty, thus leading to the well known uncertainty on the measurement of motion. As a consequence, and in accordance with the Heisenberg uncertainty principle, this leads to the so-called standard quantum limit on the precision of sensing of position and force. Similar quantum limits are found if a spin oscillating in magnetic field is monitored. In this talk I will present the ideas and experimental results for measurement of motion of a mechanical or a spin oscillator with, in principle, unlimited precision. This is achieved by performing a measurement in a special reference frame with an effective negative mass. Applications to force sensing, magnetometry and gravitational wave detection will be discussed.
Biography:
Eugene Polzik is professor of physics at the Niels Bohr Institute at the University of Copenhagen and the leader of QUANTOP – Quantum Optics Center. His research interests are within quantum physics of matter and light, quantum communication, quantum sensing, and quantum information technologies. Among his notable results are demonstration of the quantum teleportation between material objects, a quantum memory for light, an optical detection of radio waves using a nanomechanical oscillator, a quantum optical interface with a cold atomic crystal, and measurements of motion and fields not restricted by the Heisenberg uncertainty.
Eugene Polzik has published more than 170 papers in refereed journals including a number of papers in Science and Nature journals. He is a member of the Royal Danish Academy of Sciences, Fellow of the American Physical Society and Fellow of the Optical Society of America. He is a recipient of several awards. including the Herbert Walther Award of Optical Society of America and German Physical Society, the Gordon Moore Distinguished Scholar award, the Scientific American Research Leadership award, the European Research Council Advanced Grant award (twice) and the Danish Association of Academics award.
Information on participating / attending:
Due to the circumstances, the lecture will be held via Zoom. To get the login credentials, please subscribe for the DLS Newsletter at https://mpl.mpg.de/newsletter. The Zoom link is sent to the subscribers some hours before the lecture.
Date:
01/14/2021 15:00 - 01/14/2021 16:00
Event venue:
Online lecture via Zoom
Virtual lecture
Bayern
Germany
Target group:
Scientists and scholars, Students
Email address:
Relevance:
international
Subject areas:
Physics / astronomy
Types of events:
Presentation / colloquium / lecture
Entry:
11/23/2020
Sender/author:
Clarissa Grygier
Department:
Kommunikation und Marketing
Event is free:
yes
Language of the text:
English
URL of this event: http://idw-online.de/en/event67425
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