Quantum Steering and state engineering: A stupid passive approach vs. a clever active decision making

QUEST Center event
No
Speaker
Yuval Gefen - The Weizmann Institute of Science
Date
15/12/2022 - 13:30 - 12:30Add to Calendar 2022-12-15 12:30:00 2022-12-15 13:30:00 Quantum Steering and state engineering: A stupid passive approach vs. a clever active decision making Weak measurement  is an alternative to von Neumann’s dogma of the “collapse” of a wave function: it avoids the necessity of the latter’s complete destruction, while capable of extracting partial information from the system measured. Concomitantly, measurement is associated with a back-action of the detector on the system’s state. This back-action can be harnessed for the purpose of steering a quantum state into a pre-designated target state, and for quantum engineering of non-trivial states of matter. I will try to package this all together, elucidating the difference between a stupid passive protocol, and an active one, where decisions made by a smart observer may improve the performance of quantum steering. Conference room on the 0th floor of Resnick building Department of Physics physics.dept@mail.biu.ac.il Asia/Jerusalem public
Place
Conference room on the 0th floor of Resnick building
Abstract

Weak measurement  is an alternative to von Neumann’s dogma of the “collapse” of a wave function: it avoids the necessity of the latter’s complete destruction, while capable of extracting partial information from the system measured. Concomitantly, measurement is associated with a back-action of the detector on the system’s state. This back-action can be harnessed for the purpose of steering a quantum state into a pre-designated target state, and for quantum engineering of non-trivial states of matter. I will try to package this all together, elucidating the difference between a stupid passive protocol, and an active one, where decisions made by a smart observer may improve the performance of quantum steering.

Last Updated Date : 12/12/2022