Dear Group
We will meet in the CTP seminar room today at 1:00 and have the
following presentation by Masoud Mohseni.
Eddie
Title: Direct Characterization of Quantum Dynamics
Abstract:
The characterization of quantum dynamics is a fundamental and central
task in quantum mechanics. This task is typically addressed by
quantum process tomography (QPT). Here we present an alternative
"direct characterization of quantum dynamics" (DCQD) algorithm. In
contrast to all known QPT methods, this algorithm relies on error-
detection techniques and does not require any quantum state
tomography. We illustrate that, by construction, the DCQD algorithm
can be applied to the task of obtaining partial information about
quantum dynamics. Specifically, we demonstrate how DCQD can be
utilized for Hamiltonian identification tasks. Furthermore, we argue
that the DCQD algorithm is experimentally implementable in a variety
of prominent quantum-information processing systems, and show how it
can be realized in photonic systems with present day technology.
References:
M. Mohseni and D. A. Lidar, Phys, Rev. Lett. 97, 170501 (2006).
M. Mohseni and D. A. Lidar, quant-ph/0601034.
***********************************************
Edward Farhi
Professor of Physics
Director
Center for Theoretical Physics
Massachusetts Institute of Technology
NE25 Room 4024
Cambridge MA 02139
617 253 4871
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Dear Group members,
Does anybody want to meet with Lawrence Pratt? Sule? I think his theory
could help with the fuel cells. I will try to attend seminar this Wednesday.
A.
---------- Forwarded message ----------
From: Andrei A Golosov <agolosov(a)gmail.com>
Date: Dec 3, 2006 8:28 PM
Subject: Pratt's visit this Tue
To: Alan Aspuru-Guzik <alan(a)aspuru.com>
Hi, Alan! Are you or your students interested to meet with our next speaker:
Lawrence Pratt from Los Alamos?
Below is the title and the abstract. If you are interested, any time btw 9-5
other than 2-4 pm is available.
Thanks.
----Andrei
Let us start with title!
FOLLOW THE WATER! FROM THEORY OF MOLECULAR LIQUIDS TO WHAT IS SPECIAL
ABOUT WATER AS THE MATRIX OF LIFE
###
>
> • Theory of molecular liquids
> - but particularly liquid water, the condensed matter that fell on your
> head this morning
> - the roles of molecular theory, molecular simulation, and solution
> thermodynamics/chemistry in understanding molecular biology,
> biotechnology, nanotechnology
> - the intersection of molecular science and statistical mechanics: the
> Potential Distribution Theorem, a partition function to be evaluated on
> the basis of molecular simulation data
>
> • From the Potential Distribution Theorem to Quasi-chemical Theory (QCT)
> - Distributions, fluctuations, entropies, and bounds. Example: Na+/K+
> selectivity in potassium channels
> - Good theories are either gaussian or everything. Example: Gaussian
> (non-van der Waals) model of liquid water
> - QCT analysis hooks: Ab initio molecular dynamics (AIMD) and QCT for
> liquid water. Self-consistent molecular field theory?
> - Chemistry is most of story, but chemistry isn't the whole story.
> Example: primitive QCT --- the sanity check ---, d-electrons, and why
> Zn++ binds zinc fingers
> - Application: H+(aq) and HO-(aq), AIMD and sanity checks
>
> • Hydrophobic effects, what is special about liquid water as a matrix
> for life, and a discussion of NASA's "follow the water" strategy for
> exploration of our solar system.
>
--
Alan Aspuru-Guzik
Assistant Professor
Department of Chemistry and Chemical Biology
12 Oxford Street
Harvard University
Cambridge, MA 02138
Tel: (617)384-8188
Group URL: http://aspuru.chem.harvard.edu
