aspuru-list October 2015

aspuru-list@lists.fas.harvard.edu

20 participants
66 discussions

[Aspuru-Guzik group list] Prof Cederbaum Visit Next Week

by Thomas Markovich

Hi Friends, We will have Professor Lorenz Cederbaum from the University of Heidelberg visiting our group next week as part of the theochem lecture series. We have many open slots for both students and postdocs to meet with him on Tuesday, October 13th, 2015 as well as spots for both lunch and dinner. I’ve been assured that he’s not only an incredible scientist but also a really nice guy, so please let me know if you want a chance to meet with him. Additionally, he will be giving a talk on Wednesday at MIT in room 4-163 at 4pm. His abstract is below: Best, Thomas On systems with and without excess energy in environment ICD and other interatomic mechanisms Lorenz S. Cederbaum University of Heidelberg (http://www.pci.uni-heidelberg.de/cms/lenz.html) Abstract How does a microscopic system like an atom or a small molecule get rid of the excess electronic energy it has acquired, for instance, by absorbing a photon? If this microscopic system is isolated, the issue has been much investigated and the answer to this question is more or less well known. But what happens if our system has neighbors as is usually the case in nature or in the laboratory? In a human society, if our stress is large, we would like to pass it over to our neighbors. Indeed, this is in brief what happens also to the sufficiently excited microscopic system. A new mechanism of energy transfer has been theoretically predicted and verified in several exciting experiments. This mechanism seems to prevail “everywhere” from the extreme quantum system of the He dimer to water and even to quantum dots. The transfer is ultrafast and typically dominates other relaxation pathways. Can there be interatomic/intermolecular processes in environment when the system itself (again, an atom or small molecule) does not possess excess energy? The answer to this intriguing question is yes. The possible processes are introduced and discussed. Examples and arguments are presented which make clear that the processes in question play a substantial role in nature and laboratory.

8 years, 6 months

[Aspuru-Guzik group list] Away tomorrow (Friday)

by Marlon Cummings

Dear team: I will be away from the office tomorrow. Enjoy the long weekend and see you on Tuesday. Best, Marlon. -------------- *Marlon G. CummingsLab Manager, Aspuru-Guzik GroupMallinckrodt M136Department of Chemistry and Chemical BiologyHarvard University12 Oxford StreetCambridge, MA 02138617-496-9964617-496-9411 (fax)http://aspuru.chem.harvard.edu/ <http://aspuru.chem.harvard.edu/>*

8 years, 6 months

[Aspuru-Guzik group list] [qip] tomorrow

by Edward Farhi

Hi Quanta We will meet on Friday the 9th at 11:00 in 6-310. We will be joined by Barry Sanders who is also giving a QI seminar at 1:30. Best, Eddie *********************************************** Edward Farhi Cecil and Ida Green Professor of Physics Director Center for Theoretical Physics Massachusetts Institute of Technology 6-300 Cambridge MA 02139 617 253 4871 *********************************************** _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

8 years, 6 months

[Aspuru-Guzik group list] Group Meeting, Oct 8, 2:30 PM, Div Room

by Ian Kivlichan

Hi everyone, Dmitrij will give a tomorrow tutorial on the most highly voted of our tutorial topics, DFT! The Tricider's still up here <http://www.tricider.com/brainstorming/37bGg6Us487> - vote on tutorial topics you'd like to see. This'll be in the usual time and location (Div Room 2:30 PM) - just a warning that the next next group meeting (Wednesday the 21st, two weeks from today) we'll be shifting to Wednesdays at 11 AM. This is reflected on both the group calendar and the group meeting schedule <https://docs.google.com/spreadsheets/d/1LioqdopHr5ZAmn0GaCQwLUTYoU4ZJuvfrMY…>. Also, let me know if you have something you'd like to talk about in November / December! The title and abstract for Dmitrij's DFT tutorial are below. All the best, Ian ------------------------------------- Speaker: Dmitrij Rappoport Title: DFT. An Opinionated Tour Abstract: Density Functional Theory (DFT) is many things to many people: A cheap and convenient computational method for molecules and solids; a fundamentally exact approach to electronic structure, which gets the basic physical phenomena right; an inscrutable black box, giving great results for no obvious reason. I will present a quick tour of DFT with a strong bias toward molecular applications. The presentation will not make any pretense of being comprehensive or fair and balanced.

8 years, 6 months

[Aspuru-Guzik group list] ITAMP lunch seminar - Chris Ticknor , Los Alamos (10/09)

by Stefan Pabst

*ITAMP Topical Lunch Discussion* Date: Friday, October 9th Time: 12:00-1:30 pm Pizza will be served. Location: B-106 @ Center for Astrophysics (60 Garden Street) Directions: after entering the lobby of the CfA, turn right to enter the hallway of the B building. In the hallway, turn right again, and B-106 is there. *Speaker:*Chris Ticknor , Los Alamos National Lab *Title: *Scaling of fluctuations in a trapped binary condensate *Abstract: *We demonstrate that measurements of number fluctuations within finite cells provide a direct means to study susceptibility scaling in a trapped two-component Bose-Einstein condensate. This system supports a second-order phase transition between miscible (cospatial) and immiscible (symmetry-broken) states that is driven by a diverging susceptibility to magnetic fluctuations. As the transition is approached from the miscible side the magnetic susceptibility is found to depend strongly on the geometry and orientation of the observation cell. I will additionally discuss recent work on dense molecular mixtures and their application to equation of state. This work is of interest to planetary structure. -- Stefan Pabst ITAMP Postdoc Alexander von Humboldt Fellow ITAMP, Harvard-Smithsonian Center for Astrophysics 60 Garden Street Cambridge, MA 02138, USA phone: +1-617-495-7239 fax: +1-617-496-7668 email: stefan.pabst(a)cfa.harvard.edu website: www.stefanpabst.name

8 years, 6 months

[Aspuru-Guzik group list] [qip] Fwd: Travel support for QIP2016: please disseminate

by Scott Aaronson

FYI... ---------- Forwarded message ---------- From: Thomas Vidick <vidick(a)cms.caltech.edu> Date: Tue, Oct 6, 2015 at 2:04 PM Subject: Travel support for QIP2016: please disseminate To: Scott Aaronson <aaronson(a)csail.mit.edu> --------- Travel support to QIP 2016 for US-based students and postdocs Deadline: November 11th, 2015 Context: The NSF has awarded a grant to partially support the costs of traveling to and attending the QIP 2016 conference in Banff for students and postdocs with substantial need. Grants will range up to approximately US$1000 per person. More information: see http://users.cms.caltech.edu/~vidick/qip16_travel.html . --------- _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

8 years, 6 months

[Aspuru-Guzik group list] EFRC: Winners of the Poetry of Science Contest; Start of People's Choice Voting

by Catherine M Bourgeois

Dear Excitonics members: Join me in congratulating Stephanie Valleau, graduate student in Alan's group at Harvard, for placing 3rd in the 2015 Poetry of Science contest. DOE BES are also having a "People's Choice Award," award for all the entries, deadline to vote is Oct 21. It would be great if Stephanie won this award too, so ask everyone in your group to vote. Here's the link to view Stephanie's submission and to vote: http://energyfrontier.us/poetry. Congratulations Stephanie! Best, Cathy Subject: EFRC: Winners of the Poetry of Science Contest; Start of People's Choice Voting Dear EFRC Directors, The Office of Science received 16 entries to the 2015 EFRC Poetry of Science Contest, which evoked the complexities, splendor, and awe of energy science. After thoughtful deliberation, a panel of expert judges selected three juried winners: FIRST PLACE Afterlife of a photon<http://www.energyfrontier.us/content/afterlife-photon> Center for Lignocellulose Structure and Formation SECOND PLACE As Above, So Below<http://www.energyfrontier.us/content/above-so-below> Center for Frontiers of Subsurface Energy Security THIRD PLACE Ode to the Chlorosome<http://www.energyfrontier.us/content/ode-chlorosome> Center for Excitonics The full announcement can be found at http://energyfrontier.us/poetry-winners. People's Choice Voting Please encourage your colleagues and friends to view all the entries and vote for their favorites at http://energyfrontier.us/poetry. The entry that receives the most votes between September 30 and October 21, 2015 11:59 pm will be given the People's Choice Award during the plenary session at the Principal Investigators' Meeting on October 26. At the EFRC PI Meeting The juried and People's Choice winners will be invited to read their poetry during the plenary session on October 26. In addition, all entries will be on display during the poster sessions. Congratulations to everyone who submitted an entry. We continue to be amazed and delighted by the many talents of our EFRC members. Regards, Andy (Kerry Hochberger on behalf of) Andrew Schwartz Senior Technical Advisor and Team Lead Energy Frontier Research Centers DOE Office of Basic Energy Sciences Phone: (301) 903-3535 Email: andrew.schwartz(a)science.doe.gov<mailto:andrew.schwartz@science.doe.gov>

8 years, 6 months

Re: [Aspuru-Guzik group list] [qip] STARTING IN 1/2 HOUR ----- Yuri Gurevich: Hidden Variables: Value and Expectation No-Go Theorems

by Scott Aaronson

Hi everyone, Please come now to Yuri Gurevich's talk in Star! The talk on no-go theorems is a "go," :-) and it looks likely to be extremely interesting. Best, Scott On Tuesday, October 6, 2015, Debbie Lehto <dlehto(a)csail.mit.edu> wrote: > > > Yuri Gurevich: Hidden Variables: Value and Expectation No-Go >> Theorems >> >> *Speaker Affiliation:* Microsoft Research >> >> *Host:* Scott Aaronson >> >> *Date:* Tuesday, October 06, 2015 >> >> *Time:* 11:00 AM to 12:15 PM >> >> *Location:* D463 Star >> >> Abstract: No-go theorems assert that hidden-variable theories, subject to >> appropriate hypotheses, cannot reproduce the predictions of quantum theory. >> We examine two species of such theorems, value no-go theorems and >> expectation no-go theorems. The former assert that hidden-variables cannot >> match the predictions of quantum theory about the possible values resulting >> from measurements; the latter assert that hidden-variables cannot match the >> predictions of quantum theory about the expectation values of measurements. >> We sharpen the known results of both species, which allows us to clarify >> the similarities and differences between the two species. We also repair >> some flaws in existing definitions and proofs. This is joint work with >> Andreas Blass of the University of Michigan. The paper can be found at >> arXiv:1509.06896. >> >> Relevant URL: >> >> For more information please contact: Deborah Goodwin, 617.324.7303, >> dlehto(a)csail.mit.edu <mailto:dlehto@csail.mit.edu> >> >> >> >> _______________________________________________ >> Theory-seminars mailing list >> Theory-seminars(a)lists.csail.mit.edu >> https://lists.csail.mit.edu/mailman/listinfo/theory-seminars >> > > -- > Deborah Goodwin > Assistant to Profs. S Aaronson, S Goldwasser, D Moshkovitz, and R Rivest > MIT CSAIL > 32 Vassar St., G675A > Cambridge, MA 02139 > > Phone: 617.324.7303 > > _______________________________________________ > Seminars mailing list > Seminars(a)lists.csail.mit.edu > https://lists.csail.mit.edu/mailman/listinfo/seminars > _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

8 years, 6 months

[Aspuru-Guzik group list] Excitonics Seminar: Yossi Paltiel, Tues Oct 6, 4:30, 36-428

by Catherine M Bourgeois

Please post and forward to your groups ---------------------------------------------- Center for Excitonics Seminar Series Excitonic Quantum Random Walk in Biological Phycocyanin Nanowires October 6, 2015 at 4:30pm/ 36-428 Yossi Paltiel Department of Applied Physics, The Hebrew University of Jerusalem [cid:image001.jpg@01D0FAB3.C20657F0] The importance of quantum processes in biology is starting to be recognized. Quantum processes are being discussed in the context of enzyme function, olfaction, magnetic sensing and most prominently in photosynthetic light-harvesting complexes. These findings suggest that a key to the survival of quantum coherence at ambient temperatures is the interplay between long-lived vibrational modes and the electronic degrees of freedom that can lead to coherent effects. This coherence can explain the high yield of photosynthetic exciton transfer. Furthermore, it is fair to say that no device made by man so far has made use of all these properties at the same time. Our aim is to develop a new class of quantum coherent devices. This can be achieved by understanding the underlying mechanisms driving photosynthetic processes with efficient long range energy transfer and harness this knowledge to advance innovative quantum technologies. Utilizing light harvesting complexes we were able to fabricate self-assembled nano-energy guides. We used isolated Phycocyanin (PC) proteins that can self-assemble into bundles of nanowires. We show two methods for controlling the organization of the bundles. The optically excited nanowires exhibit long range quantum energy transfer through hundreds of proteins. Such results may provide new building blocks for coherent based nano-devices. In vivo desert adapted cyanobacteria seems to use the same organization for efficient energy removal. The suggested results open many questions regarding the distribution and the efficiency of energy transfer mechanisms in biological systems. Professor Yossi Paltiel has worked in both leading high-tech industry groups and in the academic world. Since July 2009, he's been leading the Quantum Nano Engineering group at the Hebrew University, Israel and is currently chair of the Applied Physics department. Paltiel's group's goal is to establish a way to incorporate quantum mechanics into room temperature "classical" computation and reading schemes. This will provide quantum coherence control at nanometer scale distances, while maintaining the physical characteristics of currently available computer input-output devices. He has published more than 70 papers in leading journals and has issued 10 patents. In 2013, he co-founded, Valentis Nanotech, a start-up company that combines nano particles with CNC (cellulose nano crystals) a biodegradable, transparent material made from plant pulp waste to produce a functional material, tailored to each industry according to its needs. Light refreshments will be served

8 years, 6 months

[Aspuru-Guzik group list] Computational materials science at MIT Materials Sciencr

by Alan Aspuru-Guzik

A couple junior faculty positions will be opening up. I was just told to motivate my group members to apply! Go for it, Alan -- Alán Aspuru-Guzik | Professor of Chemistry and Chemical Biology Harvard University | 12 Oxford Street, Room M113 | Cambridge, MA 02138 (617)-384-8188 | http://aspuru.chem.harvard.edu | http://about.me/aspuru

8 years, 7 months

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

aspuru-list October 2015