STARTING NOW: ICTP Colloquium, by Prof.Yuval Gefen:"Weak Measurement: A Peephole into the Quantum World"

Infopoint info_pt at ictp.it
Wed Feb 15 16:23:14 CET 2017


Dear All,

The ICTP Colloquium by Prof. Yuval Gefen, "Weak Measurement: A Peephole
into the Quantum World" will take place this afternoon at 16:30 hrs, in
the Budinich Lecture Hall, Leonardo Building, ICTP.

ABSTRACT: The measurement of observables in quantum mechanics is a
probabilistic process, traditionally described by von Neumann’s
projection postulate. Each eigenvalue of the observable happens to be a
possible outcome of the measurement process with a given probability,
and the original state of the system collapses into the corresponding
eigenstate. Weakly measuring an observable (i.e., coupling the system
weakly to the measuring device), perturbs the former weakly, yet, at the
same time, provides only partial information on the state of the
measured system. Employing composite measurement protocols, e.g., a weak
measurement followed by a strong one, opens new horizons. Such composite
protocols can be employed, inter alia, for efficient weak signal
amplification; they provide a tool for quantum state discrimination, and
may facilitate direct, yet non-destructive, observation of quantum
virtual states. A very recent challenge is their utility in probing
topological states of matter. I will address the principles and
applications—present and future-- of weak measurement protocols, paying
particular attention to the arena of solid state physics.

BIOSKETCH: Professor Yuval Gefen holds the Isabelle and Samuel Friedman
Professorial Chair of Theoretical Physics at the Weizmann Institute. His
research concerns the movement and interaction of electrons in systems
on the "nano scale" (which lays the foundations for the field of
nano-electronics). He is one of the “founding fathers” of the field of
mesoscopic physics. One of his predictions—that currents traveling
through extremely small pieces of metal or semiconductor material can be
measured in single electrons—helped establish the lower limit of what
characterizes the flow of electricity, and eventually led to the
experimental design of a single-electron transistor. Professor Gefen is
the recipient of many honors and fellowships, among them the Morris L.
Levinson Award in Physics, the Alexander von Humboldt Award, and, in
2003, the prestigious Max Planck Award for Physics.

The abstract of the talk is available at: http://indico.ictp.it/event/8130/

The Colloquium will be livestreamed at
http://video.ictp.it/livestream

The poster is attached.

Light refreshments will be served after the lecture.

You are all very warmly invited to attend.

Best regards,

Sandro Scandolo on behalf of Fernando Quevedo
















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