aspuru-list March 2013

aspuru-list@lists.fas.harvard.edu

35 participants
62 discussions

[Aspuru-Guzik group list] Free black vinyl couch-bed with 3 storage drawers

by Aspuru

Dear group members, Dori and I are rearranging furniture at home and will not need this couch-bed anymore. It cost us originally 500 back in the bay area circa 2005. We used to have it in our living room when I was a postdoc. It is well preserved and has great storage drawers. It is *free* to the first group member that agrees to come to my house (Cambrigeport) and take it away before next Saturday when we have other furniture come in. It is great as a guest bed! I will send another picture of it in the next message. Again, first come, first-serve. Alan Aspuru-Guzik Associate Professor Harvard University http://aspuru.chem.harvard.edu Sent from my mobile. Please pardon any typos.

9 years, 11 months

[Aspuru-Guzik group list] Meeting with a postdoc interviewee

by Dmitry Zubarev

Dear Colleagues, Dr. Elton Santos (Kaxiras Group) will be visiting the Group for the interview on Thursday, March 14. Please let me know if you would like to meet with him for 20-30 minutes between 10 am and 1:15 pm. Also, I'm looking for 2-3 people to join us for lunch and a mutually enriching conversation from 1:30pm to 2:30 pm. The following link will give you a good idea about his area of expertise: http://scholar.google.com/citations?user=vNc3cXgAAAAJ Best, Dmitry

11 years

[Aspuru-Guzik group list] [IACS-events] RESCHEDULED IACS Seminar feat: David Wales on Exploring Energy Landscapes: From Molecules to Nanodevices---- NEW DATE: Wednesday, 2/13; NEW LOCATION: MD G115

by Baker, Natasha

NEW DATE: Wednesday, February 13, 2013 Speaker: David Wales, University Professor of Chemical Physics at the University of Cambridge NEW LOCATION: Maxwell-Dworkin G115, 33 Oxford Street, Cambridge, MA 02138 Time: Informal lunch with speaker, 12:30pm. Talk, 1:00pm. Title: Exploring Energy Landscapes: From Molecules to Nanodevices Abstract: In molecular science, a computational framework for investigating structure, dynamics and thermodynamics can be provided by coarse-graining a potential energy surface into the basins of attraction of local minima. Steps between local minima form the basis for global optimisation and for calculating thermodynamic properties. To treat global dynamics, we must include transition states of the potential energy surface. These link local minima via steepest-descent paths. We may then apply discrete path sampling, which provides access to rate constants for rare events. In large systems the paths between minima with unrelated structures may involve hundreds of stationary points of the potential energy surface. New algorithms have been developed for both geometry optimization and finding connections between distant local minima. Applications will be presented for a range of different examples, including atomic and molecular clusters, biomolecules, condensed matter, and coarse-grained models of mesoscopic structures. Speaker bio: David Wales is University Professor of Chemical Physics and Deputy Head of the Department of Chemistry at the University of Cambridge. Author or co-author of 301 research papers and two books, he is interested in energy landscapes and their applications to chemical biology, spectroscopy, clusters, solids and surfaces. Wales earned his bachelor's degree and PhD in chemistry at Cambridge and subsequently conducted postdoctoral research as a Lindemann Trust Fellow, Lloyd's of London Tercentenary Fellow, Royal Society Research Fellow and Research Fellow of Downing College before being named University Lecturer in 1998. He is a Fellow of the Royal Society of Chemistry and winner of the Society's Meldola Medal and Prize. He has been a Visiting Professor at Harvard, the French universities of Paris-Sud, Paul Sabatier and Lyon, and Boston University. He recently chaired the inaugural Energy Landscapes Meeting convened by the European Science Foundation. Homepage: http://www-wales.ch.cam.ac.uk Visit http://iacs.seas.harvard.edu/events to subscribe to our Google calendar, manage your subscription to this mailing list, or access video and audio recordings of previous seminars. _______________________________________________ Iacs-events mailing list Iacs-events(a)seas.harvard.edu https://lists.seas.harvard.edu/mailman/listinfo/iacs-events

11 years

[Aspuru-Guzik group list] April 3, 2013 - Prof. Romain Quidant, HQOC/ITAMP Joint Quantum Sciences Seminar

by Hamilton, Joan

***HQOC/ITAMP Joint Quantum Sciences Seminar*** **April 3, 2013 at 4:00 PM - Jefferson 250** *Prof. Romain Quidant, ICREA Professor, ICFO* "Shining a (Bright) Light on the Very Small" Extensive research in Nano-optics over the last decade has made possible controlling optical fields on the nanometer scale. Such concentration of light, well below the limit of diffraction opens plenty of new routes towards enhanced interaction with tiny amounts of matter down to the single molecule/atom level. In this talk we will present our recent advances in enhanced light-matter interaction on the nanometer scale and their applications to quantum optics. We first discuss the controlled electromagnetic coupling of single to few quantum emitters with plasmonic nano-antennas. For this purpose, we developed a fabrication technique that enables accurate positioning of said quantum dot(s) at a predefined location of the antenna. Our experiments first shows that the antenna can be designed to efficiently control the emission properties of the quantum emitters. Using the same technique, we also demonstrate that a single qdot can be used to probe the optical near field of the antenna. In the second part of the talk we discuss a different approach in which light is used to trap and manipulate a single nanodiamond containing a single nitrogen vacancy. We demonstrate both translational and angular control of the trapped NV and discuss applications to vectorial magnetometry and mapping of the electromagnetic local density of states. The final part of the talk presents our recent advances in optomechanics. We optically trap a single nanoparticle in high vacuum and cool its three spatial degrees of freedom by means of active parametric feedback. Using a single laser beam for both trapping and cooling we demonstrate a temperature compression ratio of four orders of magnitude. The absence of a clamping mechanism provides robust decoupling from the heat bath and eliminates the requirement of cryogenic precooling. The small size and mass of the nanoparticle yield both high resonance frequencies and quality factors along with low recoil heating, which are essential conditions for ground state cooling and for low decoherence. Joan Hamilton Faculty Assistant to Profs. Greiner and Lukin HQOC Laboratory Administrator HUCTW Local Union Representative Harvard University Department of Physics 17 Oxford Street Cambridge, MA 02138 P: (617) 496-2544 F: (617) 496-2545

11 years

[Aspuru-Guzik group list] Borja Peropadre

by Alan Aspuru-Guzik

Dear group members, Please send me any feedback that you might have on your conversation with Borja Peropadre. I am considering him for a postdoc position. Best, Alan Alán Aspuru-Guzik | Associate Professor Harvard University | Department of Chemistry and Chemical Biology 12 Oxford Street, Room M113 | Cambridge, MA 02138 (617)-384-8188 | http://aspuru.chem.harvard.edu | http://about.me/aspuru

11 years

[Aspuru-Guzik group list] Fwd: Molecular Movies with the SLAC X-ray laser. GPCRs and Photosynthesis. April 19

by Alan Aspuru-Guzik

-- Alan Aspuru-Guzik Associate Professor of Chemistry and Chemical Biology Harvard University http://aspuru.chem.harvard.edu Forwarded message: > From: John Spence <spence(a)asu.edu> > To: jacobsen(a)chemistry.harvard.edu <jacobsen(a)chemistry.harvard.edu>, alan(a)aspuru.com <alan(a)aspuru.com>, cohen(a)chemistry.harvard.edu <cohen(a)chemistry.harvard.edu>, heller(a)physics.harvard.edu <heller(a)physics.harvard.edu>, xie(a)chemistry.harvard.edu <xie(a)chemistry.harvard.edu>, zhuang(a)chemistry.harvard.edu <zhuang(a)chemistry.harvard.edu>, whitesides george <gwhitesides(a)gmwgroup.harvard.edu>, Shakhnovich(a)chemistry.harvard.edu <Shakhnovich(a)chemistry.harvard.edu>, hbach(a)chemistry.harvard.edu <hbach(a)chemistry.harvard.edu>, myers(a)chemistry.harvard.edu <myers(a)chemistry.harvard.edu>, stuart_schreiber(a)harvard.edu <stuart_schreiber(a)harvard.edu>, saghatelian(a)chemistry.harvard.edu <saghatelian(a)chemistry.harvard.edu>, cml(a)cmliris.harvard.edu <cml(a)cmliris.harvard.edu>, dnocera(a)fas.harvard.edu <dnocera(a)fas.harvard.edu> > Cc: David Bell <dcb(a)seas.harvard.edu> > Date: Sunday, March 31, 2013, 2:26:59 PM > Subject: Molecular Movies with the SLAC X-ray laser. GPCRs and Photosynthesis. April 19 > > > Dear Colleagues, > I've been asked to give a talk in Applied Physics on April 19, however this biophysics project may also be relevant to people in your department. I've be grateful if you would bring it to the attention of interested students and postdocs. > regards and thanks, > John > > > Molecular movies from the first X-ray laser. > Harvard Applied Physics, April 19, 2013, > > John C. H. Spence* Physics, ASU and LBNL. > spence(a)asu.edu (mailto:spence@asu.edu) > > Snapshot X-ray diffraction from the first hard X-ray laser near Stanford (the LCLS) has provided time-resolved atomic-resolution images of the molecular machine in all green plants which splits water to create the oxygen we breathe, and digests CO2. I'll describe the single-file synchronized submicron droplet beam we use to run molecules across the pulsed laser, and how we image protein molecules important in disease (GPCRs, membrane proteins, 2D crystals, an enzyme drug target for sleeping sickness), use femtosecond pulses to outrun radiation damage, and unscramble orientational disorder from randomly oriented molecules in solution without modeling, using angular correlation functions. I'll describe how this coherent radiation provides new solutions to the phase problem for nanocrystals. > The project has been ranked one of the top ten breakthroughs of 2012 by Science journal. > > *And many others - see our review (attached) Spence, Weierstall and Chapman: Rev Mod Phys. 75, 102601 (2012). > A conference on X-ray lasers for biology will be held at the Royal Society in London from October 14 - you are most welcome to attend. > > Regent's Prof John C.H. Spence ASU Physics/LBNL > http://www.public.asu.edu/~jspence/ > https://sites.google.com/a/lbl.gov/biology-with-fels/ > > > > >

11 years

[Aspuru-Guzik group list] Friday

by Marlon Cummings

Hi Guys: It's been a long week and I'm battling a migraine. Unless you are submitting a report that is due, or bleeding from the ear, please hold off on requests until Monday. Thanks, Needy Marlon. -------------------- Marlon G. Cummings Lab Manager, Aspuru-Guzik Group Mallinckrodt M112 Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge, MA 02138 617-496-9964 617-496-9411 (fax) http://aspuru.chem.harvard.edu/

11 years

[Aspuru-Guzik group list] FRIDAY: Talk by Borja Peropadre: 03-29-2013 at 11:30

by Guerreschi, Gian

Just to remind you all of the talk by Borja Peropadre: tomorrow (i.e. Friday)´at 11:30 in the division room. Then I will go for lunch with the guest: I will be glad if 2-3 other student/post-doc decide to join us. (yes, "I" am inviting you) Gian Giacomo ________________________________ From: Guerreschi, Gian Sent: Monday, March 25, 2013 5:46 PM To: A-G Group ‎[aspuru-list@lists.fas.harvard.edu]‎ Subject: IMPORTANT: Talk by Borja Peropadre POST-PONED: 03-29-2013 at 11:30 Dear all, It is a pleasure to announce Borja's talk on Friday, March 29th, at 11:30. Borja Peropadre is a PhD student in the group of Juan Jose Garcia-Ripoll at CSIC in Madrid (Spain). http://quinfog.iff.csic.es/borja-peropadre He will visit our group this week, March 26th-29th. He is interested in our research and in discussing with us, therefore I will organize a schedule with private discussion on Tuesday and on Thursday. Please, let me know if you are interested in discussing with Borja (otherwise I will try to select a representative sample based on our research topics). -- Title: Controlling quantum systems in circuit QED designs. -- Abstract: The filed of circuit QED is widely considered the on-chip realization of cavity QED, where superconducting artificial atoms and microwave photons interact at the quantum level. The large tunability attainable in these solid-state devices, has made possible the achievement of the the so-called strong and ultrastrong coupling between light and matter. In this talk, I will show how we can take advantage of this large degree of control in circuit QED to manipulate the light-matter interaction, and ultimately the microwave photons in a resonator or propagating in an open transmission line. This offers a wide range of applications, ranging from quantum communications, condensed matter physics, to simulations in Quantum Field Theory. Best regards, Gian Giacomo

11 years

[Aspuru-Guzik group list] [Aspuru-meetings-list] group meeting: Dr. Xavier Andrade

by Ryan Babbush

Hi Everyone, Next week Xavier will be giving a presentation on his work at the intersection of GPU programming and DFT. The meeting will be at the usual time and place and an abstract of the talk is provided below. Designing software for optimal GPU performance: application to real-space DFT Since there has been a lot of interest in the group for GPU programming, in this group meeting I want to talk a bit about the experience I have gained about how to write efficient programs for GPUs. In the first part of the talk I will discuss a bit about the GPU architecture and how to design (or redesign) a scientific code to take advantage of it. In the second part of the talk I will discuss how this is applied to the Octopus code and the results we obtain. To conclude, I want to ask the group for some input about comparing performance between real-space and Gaussian DFT. -- Ryan Babbush | PhD Student in Physics (949) 331-3943 | babbush(a)fas.harvard.edu Harvard University | Aspuru-Guzik Group 12 Oxford Street | Cambridge, MA 02138 _______________________________________________ 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

[Aspuru-Guzik group list] Fwd: Invitation to join Harvard Faculty of Arts and Sciences

by Laszlo Seress

In case you didn't get this email. Laszlo ---------- Forwarded message ---------- From: Mendeley <no-reply(a)mendeley.com> Date: Wed, Mar 27, 2013 at 1:24 PM Subject: Invitation to join Harvard Faculty of Arts and Sciences To: Laszlo <seress(a)college.harvard.edu> ** Harvard Faculty of Arts and Sciences has subscribed to Mendeley Institutional Edition. Hi Laszlo, *Harvard Faculty of Arts and Sciences* has subscribed to Mendeley Institutional Edition. Join one of the groups on the Harvard Faculty of Arts and Sciences page to get a free Mendeley Premium plan upgrade. Get more storage space Collaborate with more people Get Mendeley Suggest, our state-of-the-art personal article recommendation tool Join a group now<http://mendeley.us5.list-manage1.com/track/click?u=5560fe5e9f52735e40444340…> Have feedback? Feel free to let us know<http://mendeley.us5.list-manage.com/track/click?u=5560fe5e9f52735e40444340c…> Delivered by Mendeley<http://mendeley.us5.list-manage1.com/track/click?u=5560fe5e9f52735e40444340…>Ground Floor White Bear Yard 144a Clerkenwell Road London, EC1R 5DF UK. Update notification settings<http://mendeley.us5.list-manage.com/profile?u=5560fe5e9f52735e40444340c&id=…> Unsubscribe from all e-mails<http://mendeley.us5.list-manage.com/unsubscribe?u=5560fe5e9f52735e40444340c…> -- Laszlo Ryan Seress Harvard College '14 A.B. Degree Candidate in Chemistry and Physics 1-614-670-2205 323 Cabot Mail Center Cambridge, MA 02138 seress(a)college.harvard.edu

11 years, 1 month

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aspuru-list March 2013