aspuru-list May 2011

aspuru-list@lists.fas.harvard.edu

23 participants
66 discussions

[Aspuru-Guzik group list] [Aspuru-meetings-list] AMP Seminar Monday May 16, J. Pritchard (Harvard-Smithsonian CfA)

by James F. Babb

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) 2:00 PM Monday May 16, 2011 Phillips Auditorium 60 Garden St., Cambridge, MA 02138 Constraining the dawn of cosmic structure and the epoch of reionization with the 21 cm line Jonathan Pritchard Harvard-Smithsonian CfA The first billion years of the Universe contains the formation of the first galaxies and reionization. This period lies beyond the current observational frontier presenting challenges to theory and observation. Hydrogen provides one of the best tracers of the major events during this epoch. Low frequency observations of the redshifted 21 cm line of neutral hydrogen will be key in developing our understanding of this period. In this talk, I will describe two aspects of the 21 cm signal from the period of "cosmic dawn": the global 21 cm signal and 21 cm fluctuations. I will discuss what can be learnt about the first galaxies and reionization from this technique and explore some of the challenges and opportunities ahead for the first observations. _______________________________________________ Aspuru-meetings-list mailing list Aspuru-meetings-list(a)lists.fas.harvard.edu http://lists.fas.harvard.edu/mailman/listinfo/aspuru-meetings-list

12 years, 11 months

[Aspuru-Guzik group list] breakfast leftovers in kitchen

by Anna B. Shin

Anna B. Shin Laboratory Administrator | Aspuru-Guzik Research Group Department of Chemistry and Chemical Biology | Harvard University 12 Oxford Street | Cambridge, MA 02138 617.496.9964 office | 617.694.9879 cell | 617.496.9411 fax http://aspuru.chem.harvard.edu <https://mail.google.com/mail/u/0/?ui=2&ik=e7480c62f0&view=att&th=12eee19970…>

12 years, 11 months

[Aspuru-Guzik group list] Announcemenet: Excitonics Seminar, Tues. May 17, 3pm, RLE Conf. 36-428

by Cathy Bourgeois

Correction in Subject: Date is next TUES. May 17, not today. Please forward to your groups and post in your area. - thanks Center for Excitonics Seminar Series Announcement Tuesday, May 17, 2011 3:00 PM RLE Conference Room: 36-428 Speaker: Thomas Renger, Johannes Kepler Universitat - Linz, Austria "Theory of light-harvesting in photosynthesis: from structure to function" Abstract In photosynthesis, light energy absorbed in light-harvesting pigment-protein complexes is transferred via an exciton mechanism to the reaction center where it is used to drive electron transfer reactions. The quantum efficiency of the transfer is close to 100 percent, that is, almost all excitons created reach the reaction center. In order to bridge the gap between the crystal structures of these light-harvesting proteins and optical experiments probing their function, two essential problems need to be solved. On one hand, theories of optical spectra and excitation energy transfer have to be developed that take into account the pigment-pigment (excitonic) and the pigment-protein (exciton-vibrational) coupling on an equal footing. On the other hand, the parameters entering these theories need to be calculated from the structural data. I will give a summary of recent approaches to solve the above problems and discuss applications on different light-harvesting and reaction center complexes revealing different strategies for efficient light-harvesting. Bio Born 1970 in Zittau (Germany). Study of physics at Humboldt-University Berlin (Germany), diploma (master degree) 1995, 1998 PhD degree in theoretical physics. 1999-2001 Feodor Lynen research scholar of Alexander von Humboldt-foundation at California Institute of Technology, Pasadena (USA). 2002-2009 head of junior research group (Emmy-Noether program of German Research Foundation) at Free University Berlin (Germany), institute of chemistry and biochemistry. Since 2009 head of division Theoretical Biophysics at Johannes Kepler University, Linz (Austria). Research Theory of charge and excitation energy transfer and optical spectra of biological macromolecules, dynamical theory and its parametrization by quantum chemical/electrostatic methods and molecular dynamics simulations. More detailed information can be found at: <http://www.jku.at/itp/content/e61104/> http://www.jku.at/itp/content/e61104/ Light refreshments will be served The Center for Excitonics is an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science and Office of Basic

12 years, 11 months

[Aspuru-Guzik group list] Fwd: International Workshop on Coherence and Decoherence at Ultracold Temperatures, Garching (Munich)

by sarah mostame

Begin forwarded message: From: Guido Pupillo <Guido.Pupillo(a)uibk.ac.at> Date: May 11, 2011 8:42:59 AM PDT To: codut2011 <codut2011(a)oeaw.ac.at> Subject: [bec2009] International Workshop on Coherence and Decoherence at Ultracold Temperatures, Garching (Munich) Dear Colleague, We are organizing an "International Workshop on Coherence and Decoherence at Ultracold Temperatures" to be held on 6-9 September 2011 at the Institute for Advanced Studies of the Technische Universität München in Garching/Munich. This is the third in a series of very successful workshops previously held at UBC in Vancouver in 2007 and 2010. The purpose of the workshop is to bring together the leading experts in the research fields of ultracold molecules and coherent light-matter interactions in order to discuss recent fundamental discoveries and identify new directions in the research of coherent control of both cold (<1K) and ultracold (<1mK) molecular matter. Details on the conference, including all information for registration, travel and lodging can be found at our web site: http://www.tum-ias.de/ultracold-workshop.html We warmly invite everybody, especially young people, to participate and to diffuse this invitation to anyone who could be interested in this topic. Registration is now open at the web site, and closes on _July 11, 2011_. A list of confirmed speakers is at http://www.ultracoldca.pwias.ubc.ca/participants . We are sure this conference will be as exciting as all the others in this series. The workshop will be jointly supported by the Peter Wall Institute for Advanced Studies of the University of British Columbia, the Institute for Advanced Study of Technische Universitat Munchen, the Max-Planck Institute of Quantum Optics, the European Networks NAMEQUAM and AQUTE, and the Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences. We apologize in advance if you receive this email more than once. Yours sincerely, The organizing committee Francesca Ferlaino (UIBK) Roman Krems (UBC) Kirk Madison (UBC) Valery Milner (UBC) Guido Pupillo (IQOQI) Gerhard Rempe (MPQ) Moshe Shapiro (UBC)

12 years, 11 months

[Aspuru-Guzik group list] [theochem-announce] Theochem Seminar TODAY, 4pm at MIT

by Lee-Ping

Dear All, Professor Giulia Galli, from U.C. Davis, is presenting a theoretical chemistry seminar TODAY (Wednesday, May 11) from 4:00-6:00pm in Room 4-149 at MIT. Please take note of the location! Title: Understanding and predicting materials for energy: Insight from quantum simulations Abstract: The understanding and prediction of fundamental properties of materials and molecular systems from the basic equations of quantum mechanics is an important component in the design of materials for energy applications. However the field of quantum simulations is still in its infancy and formidable theoretical and computational challenges lay ahead. After a general introduction of current first principles theories and techniques to describe molecules and condensed phases, we will discuss recent progress in predicting optical and thermoelectric properties of nanostructured materials, as well as some deceivingly simple fluids, i.e. water and hydrocarbons. We will then address open problems in quantum simulations of matter, especially the complex interplay between theory, computation, and experiment. Thank you! Lee-Ping Wang Van Voorhis Group MIT Department of Chemistry _______________________________________________ theochem-announce mailing list theochem-announce(a)mit.edu http://mailman.mit.edu/mailman/listinfo/theochem-announce

12 years, 11 months

[Aspuru-Guzik group list] FW: Announcemenet: Excitonics Seminar, TODAY, 3pm, RLE Conf. 36-428

by Cathy Bourgeois

Please forward to your groups and post in your area. - thanks Center for Excitonics Seminar Series Announcement Tuesday, May 17, 2011 3:00 PM RLE Conference Room: 36-428 Speaker: Thomas Renger, Johannes Kepler Universitat - Linz, Austria "Theory of light-harvesting in photosynthesis: from structure to function" Abstract In photosynthesis, light energy absorbed in light-harvesting pigment-protein complexes is transferred via an exciton mechanism to the reaction center where it is used to drive electron transfer reactions. The quantum efficiency of the transfer is close to 100 percent, that is, almost all excitons created reach the reaction center. In order to bridge the gap between the crystal structures of these light-harvesting proteins and optical experiments probing their function, two essential problems need to be solved. On one hand, theories of optical spectra and excitation energy transfer have to be developed that take into account the pigment-pigment (excitonic) and the pigment-protein (exciton-vibrational) coupling on an equal footing. On the other hand, the parameters entering these theories need to be calculated from the structural data. I will give a summary of recent approaches to solve the above problems and discuss applications on different light-harvesting and reaction center complexes revealing different strategies for efficient light-harvesting. Bio Born 1970 in Zittau (Germany). Study of physics at Humboldt-University Berlin (Germany), diploma (master degree) 1995, 1998 PhD degree in theoretical physics. 1999-2001 Feodor Lynen research scholar of Alexander von Humboldt-foundation at California Institute of Technology, Pasadena (USA). 2002-2009 head of junior research group (Emmy-Noether program of German Research Foundation) at Free University Berlin (Germany), institute of chemistry and biochemistry. Since 2009 head of division Theoretical Biophysics at Johannes Kepler University, Linz (Austria). Research Theory of charge and excitation energy transfer and optical spectra of biological macromolecules, dynamical theory and its parametrization by quantum chemical/electrostatic methods and molecular dynamics simulations. More detailed information can be found at: <http://www.jku.at/itp/content/e61104/> http://www.jku.at/itp/content/e61104/ Light refreshments will be served The Center for Excitonics is an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science and Office of Basic

12 years, 11 months

[Aspuru-Guzik group list] anyone interested in Norbert Schuch giving a talk?

by Sergio Boixo

Hi, It turns out that Norbert is here on Tuesday and Friday, not Monday and Tuesday. Is anyone interested in a blackboard talk about either: 1.-Entanglement spectrum and boundary theories with projected entangled-pair states http://arxiv.org/abs/1103.3427 2.-Yet to be published results on the complexity of commuting Hamiltonians? Regards, Sergio

12 years, 11 months

[Aspuru-Guzik group list] Fwd: [CCB_Staff] NUCLEUS Accounts

by Anna B. Shin

FYI. Anna B. Shin Laboratory Administrator | Aspuru-Guzik Research Group Department of Chemistry and Chemical Biology | Harvard University 12 Oxford Street | Cambridge, MA 02138 617.496.9964 office | 617.694.9879 cell | 617.496.9411 fax http://aspuru.chem.harvard.edu <https://mail.google.com/mail/u/0/?ui=2&ik=e7480c62f0&view=att&th=12eee19970…> ---------- Forwarded message ---------- From: Lavin, Joe <lavin(a)chemistry.harvard.edu> Date: Tue, May 10, 2011 at 3:28 PM Subject: [CCB_Staff] NUCLEUS Accounts To: "faculty(a)chemistry.harvard.edu" <faculty(a)chemistry.harvard.edu>, " staff(a)chemistry.harvard.edu" <staff(a)chemistry.harvard.edu>, gradstudents < gradstudents(a)chemistry.harvard.edu>, postdocs < postdocs(a)chemistry.harvard.edu>, "othergradstudents(a)chemistry.harvard.edu" < othergradstudents(a)chemistry.harvard.edu> Dear CCB Community, Please see the following message from FAS Research Computing about NUCLEUS accounts. Questions about this may be directed to rchelp(a)fas.harvard.edu Best, Joe Lavin _________ Hello Everyone, As part of the continued reorganization of the Harvard IT landscape FAS Research Computing is undertaking a process to properly delineate research resources from the enterprise IT infrastructure. To that end effective June 1st you will no longer be able to use your NUCLEUS account (CGR,MCB,OEB,CCB,CNS) and will require an RC account to access the following resources... RCFS1, RCFS2, RCFS3 file servers All websites and file shares on the MCB webserver Maelstrom ( www.mcb.harvard.edu) The MCB Intranet (intranet.mcb.harvard.edu) All Website on the Sysbio webserver cgrweb (www.sysbio.harvard.edu) SPINAL instrument scheduling All instrument computers in the sysbio core, SCRB, Imaging center, Microchemistry and various other labs Citrix applications and Terminal Servers such as Zaphod (hosting facility) If you do not presently have an RC account one will be created for you with the same username and password as your Nucleus account. If you have more than one account (i.e.cgr,mcb) They will be combined into one RC account. If you already have an RC account your Nucleus account will be merged with this RC account. The RC username and password for already existing accounts will not change. The existing nucleus accounts will continue to function for those services not migrating such as Desktop logins. The process of moving these over to FAS will be handled by FAS IT. We expect the RC accounts to be available for testing a couple weeks prior to June 1st. Related to this change is the announced outage of services due to scheduled power work at 60 Oxford Street for the weekend of June 9-11, 2011. Please see http://rc.fas.harvard.edu/updates/downtime_June2011 for details about the impact this will have on Research Computing-hosted systems. If you have any questions or concerns please email rchelp(a)fas.harvard.edu Thanks, FAS Research Computing _______________________________________________ ccb_staff mailing list ccb_staff(a)lists.fas.harvard.edu http://lists.fas.harvard.edu/mailman/listinfo/ccb_staff

12 years, 11 months

[Aspuru-Guzik group list] Norbert Schuch visit

by Sergio Boixo

Hi, Norbert Schuch will be visiting the group Monday and Tuesday next week. If you want to schedule an official meeting let me know what time works for you. Regards, Sergio

12 years, 11 months

[Aspuru-Guzik group list] Announcemenet: Excitonics Seminar, TODAY, 3pm, RLE Conf. 36-428

by Cathy Bourgeois

Please forward to your groups and post in your area. thanks Center for Excitonics Seminar Series Announcement Tuesday, May 10, 2011 3:00 PM RLE Conference Room: 36-428 Speaker: Benoît Deveaud-Plédran, Ecole Polytechnique Fédérale de Lausanne Bose-Einstein condensates of polaritons: Vortices and superfluidity Abstract The idea of a possible Bose Eintein condensation in the solid state has been explored since the beginning of the sixties with the hope to get transition temperatures much more accessible than the temperatures needed for the condensation of atomic vapors (less than 1µK for Rubidium). The advantage in solids is that people are trying to condense excitons (an electron-hole pair in a semiconductor) with a mass similar to that of an electron, i.e. four orders of magnitude less than a rubidium atom. The price to pay is the disorder inherent to any real solid state system as well as the limited lifetime of the quasiparticles. We are using exciton polaritons, quasiparticles made one half for excitons and one half from a confined photon. Polaritons are bosons with a mass five orders of magnitude lighter than an electron. Then, condensation at temperatures of the order of 300 K has been observed. The price to pay is the incredibly short lifetime of the polaritons : one picosecond. During this talk, I will detail our studies on the physical properties of polariton condensates. In particular, I will focus on the evidence for superfluidity through the observation of quantized vortices. I will show their time resolved behavior, and show the first direct evidence for half quantized vortices, a specialty of spinor condensates. Bio Benoit Deveaud-Plédran is a full professor in Physics at the Ecole Polytechnique Fédérale de Lausanne having received his Physics Engineering degree from the Ecole Polytechnique, Paris in 1974, his Masters degree in Optoelectronics from Rennes University in 1977, and his PhD from Grenoble University in 1984. Amongst his many awards and recognitions are the 1985 Young Researcher Award from Paris' Ministry of Defense, the 2004 Best Teacher Award from EPFL, and the 2009 Outstanding Referee Award from Physical Review Letters. He is a specialist in the optical spectroscopy of semiconductors with a particular dedication to ultrafast and coherent optical spectroscopy. Over the last few years his team has expanded the understanding of coherent optical spectroscopy by developing a whole ensemble of actively stabilized interferometers, able to perform spectral interferometry as well as a profound understanding of the physics of semiconductor microcavities. Light refreshments will be served The Center for Excitonics is an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science and Office of Basic

12 years, 11 months

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aspuru-list May 2011