aspuru-list September 2012

aspuru-list@lists.fas.harvard.edu

26 participants
54 discussions

[Aspuru-Guzik group list] [Aspuru-meetings-list] AMP Seminar Monday, September 17, Nimrod Moiseyev (Technion-Israel Institute of Technology) Measurable phenomena in light matter interaction in open systems with non-Hermitian quantum mechanics

by Gonzalo Gonzalez Abad

Please join us for an informal seminar sponsored by the Atomic and Molecular Physics Division, Harvard-Smithsonian Center for Astrophysics. (Complete schedule at http://www.cfa.harvard.edu/amp/events.html) 11:00 AM Monday, September 17, 2012 Classroom 60 Garden St, Cambridge, MA Measurable phenomena in light matter interaction in open systems with non-Hermitian quantum mechanics Nimrod Moiseyev Schulich Faculty of Chemistry and Faculty of Physics, Technion-Israel Institute of Technology Abstract When embedded in a suitable environment, atoms, molecules and nano-structures can have finite lifetime. Non-hermitian (NH) quantum mechanics (QM) is particularly suitable to describe these open systems, mainly because the discrete eigenstates of the NH Hamiltonian (resonances) provide not only the lifetime of the system but also the probability to decay into the different open channels. Resonances appear in most disciplines of science. NHQM aids in discovering fundamental new phenomena which are hard to discover or explain by other means. One such exciting phenomenon we have recently discovered show that for open systems an asymmetrical dynamical behavior is obtained by an arbitrarily slow variation of potential parameters. This means that different initial states will end up in the same final state. Moreover, the final results depends on the direction of motion of the potential parameters. Following the same path in the potential parameter space different results are obtained if the parameters are varied in the clock-wise direction or in the counter-clock wise direction. We claim that this dynamical asymmetrical decay process is a novel mechanism to control pathways between different states for a variety of physical and bio-chemical systems. References Raam Uzdin, Alexei Mailybaev and Nimrod Moiseyev,'On the observability and asymmetry of adiabatic state flips generated by exceptional points', J. Phys. A : Math. Theor. 44 435302 (2011) Ido Gilary and Nimrod Moiseyev, FAST TRACK COMMUNICATION, 'Asymmetric effect of slowly varying chirped laser pulses on the adiabatic state exchange of a molecule' J. Phys. B: At. Mol. Opt. Phys. 45 ,051002 (2012) Nimrod Moiseyev, Chapter 9 in 'Non-hermitian Quantum Mechanics', Cambridge University Press, 2011 _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

11 years, 7 months

by Gonzalo Gonzalez Abad

Measurable phenomena in light matter interaction in open systems with non-Hermitian quantum mechanics Nimrod Moiseyev Schulich Faculty of Chemistry and Faculty of Physics, Technion-Israel Institute of Technology Abstract When embedded in a suitable environment, atoms, molecules and nano-structures can have finite lifetime. Non-hermitian (NH) quantum mechanics (QM) is particularly suitable to describe these open systems, mainly because the discrete eigenstates of the NH Hamiltonian (resonances) provide not only the lifetime of the system but also the probability to decay into the different open channels. Resonances appear in most disciplines of science. NHQM aids in discovering fundamental new phenomena which are hard to discover or explain by other means. One such exciting phenomenon we have recently discovered show that for open systems an asymmetrical dynamical behavior is obtained by an arbitrarily slow variation of potential parameters. This means that different initial states will end up in the same final state. Moreover, the final results depends on the direction of motion of the potential parameters. Following the same path in the potential parameter space different results are obtained if the parameters are varied in the clock-wise direction or in the counter-clock wise direction. We claim that this dynamical asymmetrical decay process is a novel mechanism to control pathways between different states for a variety of physical and bio-chemical systems. References Raam Uzdin, Alexei Mailybaev and Nimrod Moiseyev,'On the observability and asymmetry of adiabatic state flips generated by exceptional points', J. Phys. A : Math. Theor. 44 435302 (2011) Ido Gilary and Nimrod Moiseyev, FAST TRACK COMMUNICATION, 'Asymmetric effect of slowly varying chirped laser pulses on the adiabatic state exchange of a molecule' J. Phys. B: At. Mol. Opt. Phys. 45 ,051002 (2012) Nimrod Moiseyev, Chapter 9 in 'Non-hermitian Quantum Mechanics', Cambridge University Press, 2011 _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

11 years, 7 months

[Aspuru-Guzik group list] practice talk today - 1:30

by Ryan Babbush

Hi Everyone, Today Alan will be giving us his final practice talk 1:30 for those who are interested. Additionally, he has offered get us lunch at Fire & Ice at noon if we attend! -- Ryan Babbush | PhD Student in Chemistry (949) 331-3943 | babbush(a)fas.harvard.edu Harvard University | Aspuru-Guzik Research Group 12 Oxford Street, Box 400 | Cambridge, MA 02138

11 years, 7 months

[Aspuru-Guzik group list] missing copy of Jackson

by Joey Goodknight

Did I lend my copy of JD Jackson's Electrodynamics to anyone in the group? I can't seem to find it anywhere and it's not at my house nor is it back home in CA. Thanks! -Joey

11 years, 7 months

[Aspuru-Guzik group list] No jobs except Joon.

by Alan Aspuru-Guzik

Dear group, Don't run any more jobs on eldorado except Joon. He is running some last-minute tenure calculations. Best Alan -- Alan Aspuru-Guzik Associate Professor of Chemistry and Chemical Biology Harvard University http://aspuru.chem.harvard.edu

11 years, 7 months

[Aspuru-Guzik group list] Fwd: NVIDIA Tech Team GPU talk at BU, Thursday September 13th at 3pm!

by Alan Aspuru-Guzik

-- Alan Aspuru-Guzik Associate Professor of Chemistry and Chemical Biology Harvard University http://aspuru.chem.harvard.edu Forwarded message: > From: Daniel Kamalic <kamalic(a)bu.edu> > To: gpu(a)bu.edu > Date: Saturday, September 8, 2012 6:35:45 AM > Subject: NVIDIA Tech Team GPU talk at BU, Thursday September 13th at 3pm! > > Dear GPU colleagues, > > The NVIDIA technical team will be doing an informal open talk at 24 > Cummington St basement room B04 this coming Thursday from 3-5pm. > Everyone is welcome. > > Please email kamalic(a)bu.edu to let me know if you think you can make it, > so we know if we need to bring more chairs. (However, no RSVP is truly > needed -- it's perfectly OK to just show up at the last minute without > telling me!) > > > > -- > Daniel P. Kamalic Phone: (617) 358-3311 > Manager of Research Computing > College of Engineering Email: kamalic(a)bu.edu > Boston University Web: http://eng.bu.edu > >

11 years, 7 months

[Aspuru-Guzik group list] Practice talk today 4 PM

by Alan Aspuru-Guzik

Dear group members, Many of you know that the last few days I have been rearranging the tenure talk into a new incarnation of it. Sorry for the short notice, but if you can make it, that would be great. I will give a practice tenure talk today at 4 PM in the Division room. Some of the slides will still not be perfect, but feel free to comment on them, as I will clean up during the weekend. I will mostly concentrate on delivery style and on practicing the new order of the slides and ideas. Here is the new URL for commenting on slides. https://docs.google.com/document/d/1gZNtYYjEiS16HTBsSC22D0u25k7UGIiJV8d4q81… See you soon, Alan

11 years, 7 months

[Aspuru-Guzik group list] [IACS-events] Reminder: IACS Seminar tomorrow, Sept. 7: Nicolas Hadjiconstantinou (MIT) on Efficient Simulation of Multiscale Kinetic Transport

by Rosalind Reid

Please join us for our first IACS Seminar of the fall. ********************* Speaker: Nicolas Hadjiconstantinou, MIT Location: Maxwell Dworkin G125, 33 Oxford Street, Cambridge Date: Friday, Sept. 7 Time: Informal lunch with speaker, 12:30pm. Talk, 1:00pm. Title: Efficient Simulation of Multiscale Kinetic Transport Abstract: This talk will discuss a new class of approaches for simulating multiscale kinetic problems, with particular emphasis on applications related to small-scale transport. These approaches are based on an algebraic decomposition of the distribution function into an equilibrium part, described deterministically (analytically or numerically), and the remainder, described using a particle simulation method. The discussion will pay particular attention to stochastic particle simulation methods that are typically used to simulate kinetic phenomena. Algebraic decomposition can be thought of as control-variate variance-reduction formulation, with the nearby equilibrium serving as the control. Such formulations can provide substantial computational benefits; in many cases, the computational cost reduction is sufficiently large to enable otherwise intractable simulations. The proposed methods will be illustrated with a variety of problems of engineering interest, such as microscale/nanosc ale gas flows. Bio: Nicolas Hadjiconstantinou is professor of mechanical engineering and Director of Computation for Design and Optimization at MIT. He holds BA and MA degrees in engineering from the University of Cambridge (UK), an SM degree in physics from MIT and a PhD in mechanical engineering from MIT. After completing his PhD in 1998, he spent a year at Lawrence Livermore National Laboratory as a Lawrence Livermore Fellow working with Berni Alder on computational kinetic theory. He then joined the faculty of the Mechanical Engineering Department at MIT, where he is now Professor. His interests include molecular simulation methods, microscale fluid mechanics and transport theory. He is a Fellow of the American Society of Mechanical Engineers (ASME) and was recently presented the 2012 Gustus L. Larson Memorial Award. For information about future events at IACS, see http://iacs.seas.harvard.edu/events. The page includes a Google calendar with details on all IACS Seminars. ******* The second IACS Seminar will be Friday, Sept. 21: Joseph Teran of UCLA will speak on "Scientific Computing for Movie Special Effects and Virtual Surgery." _______________________________________________ Iacs-events mailing list Iacs-events(a)seas.harvard.edu https://lists.seas.harvard.edu/mailman/listinfo/iacs-events

11 years, 7 months

[Aspuru-Guzik group list] [qip] Workshop of Quantum Dynamics and Quantum Walks

by Shelby Kimmel

Here's a notice for a workshop from our friend, Yutaka. Shelby --------------------------------- Title: Workshop of Quantum Dynamics and Quantum Walks http://qm.ims.ac.jp/qdqw/ Date: November 24th - 26th, 2012 Venue: Okazaki Conference Center, Japan http://www.orion.ac.jp/occ-e/ It is importantly noted that the nearest airport is the Central Japan International Airport (NGO) located in Nagoya http://www.centrair.jp/en/index.html and is not Narita and Haneda airports. Aim: The Nature is always changed dynamically even in quantum mechanics. A quantum walk, which is a quantum mechanical analogue of the random walk, is a promising toy model to understand the quantum dynamics. Surprisingly, these models can be experimentally demonstrated in some physical models. This workshop opens interdisciplinary researchers from the theoretical and experimental sides on the discrete-time and contentious-time quantum walks, for examples, mathematics, quantum information, and quantum chemistry. The organizers strongly encourage young researcher to actively join us to this workshop. Invited Speakers: Norio Konno (Yokohama National University, Japan) Dieter Meschede (University of Bonn, Germany) Nobuyuki Takei (Institute for Molecular Science, Japan) Andreas Schreiber (University of Paderborn, Germany) Ivan Kassal (University of Queesland, Australia) Peng Xue (Southeast University, China) Salvador Venegas Andraca (Tecnológico de Monterrey, Campus Estado de México, Mexico) Teleconfence Travel support: For the young researchers, the graduated students and the posdocs, the organizers will support the accommodation nearly located at the conference venue, which is the Mishima lodge. http://www.orion.ac.jp/lodge/okazaki_lodge_en/ This support is limited due to the grant. Organizers: Etsuo Segawa (Tohoku University) Yutaka Shikano (Institute for Molecular Science, Chief) yshikano(a)ims.ac.jp -- Shelby Kimmel PhD Candidate in Physics Massachusetts Institute of Technology www.mit.edu/~skimmel _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

11 years, 7 months

[Aspuru-Guzik group list] [Aspuru-meetings-list] Reminder: ITAMP/HQOC Joint Quantum Sciences Seminar - Sept. 5 at 4:00 PM

by Joel Yuen

Alán wanted to remind the group that there's a seminar of Philip Walther as well as of Jarrod coming up within the next hour. ** HQOC/ITAMP Joint Quantum Sciences Seminar Sept. 5, 4:00 PM in J250 Guest Speaker: Assistant Professor Philip Walther, University of Vienna Title: "Quantum Cloud Computing, Photonic Quantum Simulation and Quantum Discord as Resource" Student Presentation by Jarrod McClean, Aspuru-Guzik Group Title: "Solving eigenvalue problems with the quantum computer in your lab instead of the quantum computer in your dreams" Refreshments will be served. _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

11 years, 8 months

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aspuru-list September 2012