aspuru-list May 2015

aspuru-list@lists.fas.harvard.edu

17 participants
48 discussions

by Jarrod McClean

As Alan mentioned at group meeting today, I’ll also be running the BAA 10K this year, http://www.baa.org/races/10k/participant-information/athlete-registration.a… and anyone who wishes to join me is more than welcome! It’s a fun race with ~10,000 people running it or so! Jarrod

8 years, 12 months

[Aspuru-Guzik group list] Cynthia´s departure.

by Alan Aspuru-Guzik

Dear group members, Due a change in her personal visa status and the archaic US visa classification system, Cynthia cannot longer work with us effective as of tomorrow. This is extremely unfortunate as she has been truly an outstanding lab assistant as all of you know. Tomorrow is going to be her last day with us, and I encourage you to stop by and say goodbye. We will certainly have a small party for her in the upcoming weeks as she is going to be local. This will be a hard blow to the group, but it is obvious that I am super thankful to her for her almost three years with us. - 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, 12 months

[Aspuru-Guzik group list] Pictures at 3:30

by Joey Goodknight

If you're not able to come to group meeting but still want to be in the group picture come to the Mallinckrodt lobby at 3:30. :)

8 years, 12 months

[Aspuru-Guzik group list] My Thesis Defense Tomorrow (Pfizer 2:00PM)

by Jarrod

Hi All, I just thought I would quickly advertise my thesis defense tomorrow, which will be at 2PM in Pfizer Lecture Hall. My thesis abstract is attached and the talk will be composed of a small sub-story from my thesis. If you are able to make it, I appreciate any and all support you can give! Best, Jarrod

8 years, 12 months

[Aspuru-Guzik group list] [qip] Friday the 8th

by Edward Farhi

Hi Quanta We will meet on Friday the 8th as usual at 11:00. Beni Yoshida will be visiting and he will also be speaking in our seminar series at 1:30. See you there! Eddie Edward Farhi Director Center for Theoretical Physics Massachusetts Institute of Technology farhi(a)mit.edu _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

8 years, 12 months

[Aspuru-Guzik group list] [theochem-announce] Shaul Mukamel theochem seminar TODAY 5/6 @ 4 PM in 4-163

by Michael Mavros

Hi all, Prof. Shaul Mukamel of UC Irvine will be giving the last theoretical chemistry seminar of the semester TODAY from 4-6 PM in 4-163. His title and abstract are below. We hope to see you all there! *Title:* Multidimensional Electronic And Vibrational Spectroscopy Of Molecules Using Attosecond X-Ray Pulses, Optical Pulses, And Quantum Light *Abstract:* The response of molecules to sequences of ultrafast optical pulses ranging from the infrared to the hard x-ray regimes provides novel windows into elementary molecular events and electronic and nuclear motions. Recent developments in this field involving the use of broadband x-ray pulses and entangled photons will be surveyed. New x-ray light sources are capable of triggering valence electron motions impulsively by a stimulated resonant Raman process via core excitations and monitoring them with high temporal and spatial resolution. Attosecond x-ray pulses can probe quantum coherence and correlations of valence electron and hole pairs, in an analogous manner to the way vibrational motions are investigated using femtosecond Raman techniques in the visible regime. By creating multiple core holes at controlled times and locations it becomes possible to study the dynamics and correlations of valence electrons as they respond to core hole perturbations. Applications will be presented to energy transfer in porphyrin aggregates, long-range biological electron transfer and multidimensional electron diffraction. A stimulated Raman detection of an X-ray probe may be used to monitor the phase and the dynamics of the nonequilibrium valence electronic state wavepacket created by e.g. photoexcitation, and photoionization. The passage through conical intersections can be directly monitored by observing electronic coherences. Quantum spectroscopy utilizes the quantum nature of light to reveal matter properties not available with classical light. Quantum spectroscopy signals are recorded by varying parameters of the photon wavefunction rather than classical field envelopes. Entangled photons provide novel nonlinear spectroscopic probes of excitation energy transfer and charge separation processes in chromophore aggregates. The unusual spectral and temporal characteristics of entangled photon pairs combined with interferometric detection make it possible to manipulate and control multiple exciton states in photosynthetic reaction centers. 1. "Monitoring Long-range Electron Transfer in Proteins by Stimulated Broadband X-Ray Raman Spectroscopy", Yu Zhang, J.D. Biggs, Niri Govind, and Shaul Mukamel. JPC Lett, 5, 3656-3661 (2014) 2. "Stimulated Raman Spectroscopy with Entangled Light; Enhanced Resolution and Pathway Selection", K. Dorfman, F. Schlawin, and S. Mukamel. dx.doi.org/10.1021/jz501124a | J. Phys. Chem. Lett, 5, 2843-2849 (2014) 3. "Multidimensional Spectroscopy with Entangled Light; Loop vs. Ladder Delay Scanning Protocols", K.E. Dorfman and S. Mukamel. New J. Phys. 16, 033013 (2014) 4. "Catching Conical Intersections in the Act; Monitoring Transient Electronic Coherences by Attosecond Stimulated X-ray Raman Signals", Konstantin Dorfman, Kochise Bennett, Markus Kowalewski, and Shaul Mukamel. (In preparation, 2015) -- Michael Mavros Department of Chemistry, Massachusetts Institute of Technology _______________________________________________ theochem-announce mailing list theochem-announce(a)mit.edu http://mailman.mit.edu/mailman/listinfo/theochem-announce

8 years, 12 months

[Aspuru-Guzik group list] ITAMP lunch discussion - Prof. Robin Cote, UConn (05/08)

by Richard Schmidt

Dear colleagues, this week we are looking forward to an overview talk by Prof. Robin from the University of Connecticut. Kind regards, Richard and Swati ITAMP Topical Lunch Discussion Date: Friday, May 8th 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: Prof. Robin Côté (University of Connecticut, Storrs) Title: Cold and ultracold molecules Abstract: The rapid progress in forming and cooling molecules in the cold and ultracold regime has opened the door to a variety of studies in a range of fields seemingly unrelated. In this presentation, we will discuss some aspects of the formation of ultracold molecules, paying special attention to photoassociation near Feshbach resonances, the interaction between molecules (e.g. by orienting molecules using external fields), ultracold chemical reactions, and more. We will also explore how Rydberg dressing interactions can influence these processes. In addition, we will discuss applications of ultracold molecules to quantum information and condensed matter physics. --------------------------- Dr. Richard Schmidt Institute for Theoretical Atomic, Molecular, and Optical Physics (ITAMP) Harvard-Smithsonian Center for Astrophysics MS-14 60 Garden St. Cambridge, MA 02138 U.S.A. richard.schmidt(a)cfa.harvard.edu Tel. +1 (617) 496-7610 Fax +1 (617) 496-7668

8 years, 12 months

[Aspuru-Guzik group list] [theochem-announce] Shaul Mukamel theochem seminar Wednesday 5/6 @ 4 PM in 4-163

by Michael Mavros

Hi all, Prof. Shaul Mukamel of UC Irvine will be giving the last theoretical chemistry seminar of the semester this Wednesday from 4-6 PM in 4-163. His title and abstract are below. We hope to see you all there! *Title:* Multidimensional Electronic And Vibrational Spectroscopy Of Molecules Using Attosecond X-Ray Pulses, Optical Pulses, And Quantum Light *Abstract:* The response of molecules to sequences of ultrafast optical pulses ranging from the infrared to the hard x-ray regimes provides novel windows into elementary molecular events and electronic and nuclear motions. Recent developments in this field involving the use of broadband x-ray pulses and entangled photons will be surveyed. New x-ray light sources are capable of triggering valence electron motions impulsively by a stimulated resonant Raman process via core excitations and monitoring them with high temporal and spatial resolution. Attosecond x-ray pulses can probe quantum coherence and correlations of valence electron and hole pairs, in an analogous manner to the way vibrational motions are investigated using femtosecond Raman techniques in the visible regime. By creating multiple core holes at controlled times and locations it becomes possible to study the dynamics and correlations of valence electrons as they respond to core hole perturbations. Applications will be presented to energy transfer in porphyrin aggregates, long-range biological electron transfer and multidimensional electron diffraction. A stimulated Raman detection of an X-ray probe may be used to monitor the phase and the dynamics of the nonequilibrium valence electronic state wavepacket created by e.g. photoexcitation, and photoionization. The passage through conical intersections can be directly monitored by observing electronic coherences. Quantum spectroscopy utilizes the quantum nature of light to reveal matter properties not available with classical light. Quantum spectroscopy signals are recorded by varying parameters of the photon wavefunction rather than classical field envelopes. Entangled photons provide novel nonlinear spectroscopic probes of excitation energy transfer and charge separation processes in chromophore aggregates. The unusual spectral and temporal characteristics of entangled photon pairs combined with interferometric detection make it possible to manipulate and control multiple exciton states in photosynthetic reaction centers. 1. "Monitoring Long-range Electron Transfer in Proteins by Stimulated Broadband X-Ray Raman Spectroscopy", Yu Zhang, J.D. Biggs, Niri Govind, and Shaul Mukamel. JPC Lett, 5, 3656-3661 (2014) 2. "Stimulated Raman Spectroscopy with Entangled Light; Enhanced Resolution and Pathway Selection", K. Dorfman, F. Schlawin, and S. Mukamel. dx.doi.org/10.1021/jz501124a | J. Phys. Chem. Lett, 5, 2843-2849 (2014) 3. "Multidimensional Spectroscopy with Entangled Light; Loop vs. Ladder Delay Scanning Protocols", K.E. Dorfman and S. Mukamel. New J. Phys. 16, 033013 (2014) 4. "Catching Conical Intersections in the Act; Monitoring Transient Electronic Coherences by Attosecond Stimulated X-ray Raman Signals", Konstantin Dorfman, Kochise Bennett, Markus Kowalewski, and Shaul Mukamel. (In preparation, 2015) -- Michael Mavros Department of Chemistry, Massachusetts Institute of Technology _______________________________________________ theochem-announce mailing list theochem-announce(a)mit.edu http://mailman.mit.edu/mailman/listinfo/theochem-announce

8 years, 12 months

[Aspuru-Guzik group list] [qip] Seminar - Beni Yoshida (this Friday)

by Cyril Stark

Dear All, Beni Yoshida from Caltech is visiting us from May 8 until May 12. Please send me a note if you would like to schedule a meeting. Beni will give the qip seminar this week. Please find the details below. Best wishes, cyril -- Title: Holographic quantum error-correcting codes: Toy models for the AdS/CFT correspondence Place: 6C-442 Time: 1:30 (May 8) Abstract: We propose a family of exactly solvable toy models for the AdS/CFT correspondence based on a novel construction of quantum error-correcting codes with a tensor network structure. Our building block is a special type of tensor with maximal entanglement along any bipartition, which gives rise to an exact isometry from bulk operators to boundary operators. The entire tensor network is a quantum error-correcting code, where the bulk and boundary degrees of freedom may be identified as logical and physical degrees of freedom respectively. These models capture key features of entanglement in the AdS/CFT correspondence; in particular, the Ryu-Takayanagi formula and the negativity of tripartite information are obeyed exactly in many cases. That bulk logical operators can be represented on multiple boundary regions mimics the Rindler-wedge reconstruction of boundary operators from bulk operators, realizing explicitly the quantum error-correcting features of AdS/CFT. This is a joint work with Daniel Harlow, Fernando Pastawski and John Preskill -- Cyril Stark Center for Theoretical Physics Massachusetts Institute of Technology 77 Massachusetts Ave, 6-304 Cambridge, MA 02139, USA _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

8 years, 12 months

[Aspuru-Guzik group list] Fwd: 2016 INCITE Call for Proposals

by Alan Aspuru-Guzik

In case anybody wants a large computational project. 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 ---------- Forwarded message ---------- From: Wells, Jack C. <wellsjc(a)ornl.gov> Date: Tue, May 5, 2015 at 2:07 PM Subject: 2016 INCITE Call for Proposals To: *2016 INCITE Call for Proposals * The Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program is now accepting proposals for high-impact, computationally intensive research campaigns in a broad array of science, engineering, and computer science domains. *OLCF Contact* If you plan to submit an INCITE proposal now or in the future requesting a project at OLCF, please do me the favor of following this link, https://www.surveymonkey.com/s/WL8VJ58, to communicate your intent, or contact me directly via email (wellsjc(a)ornl.gov). *Proposal Details* >From April 15 to June 26, INCITE’s open call provides an opportunity for researchers to request large allocations of computer time and supporting resources at the Argonne and Oak Ridge Leadership Computing Facility (LCF) centers, operated by the U.S. Department of Energy (DOE), Office of Science. The winning proposals will receive awards of time on Titan, the 27-petaflops Cray XK7 at Oak Ridge National Laboratory and Mira, the 10-petaflops IBM Blue Gene/Q at Argonne. INCITE will allocate more than five billion core-hours on these DOE leadership-class supercomputers in 2016. Proposals may be awarded for up to three years. Open to U.S.- and non-U.S.-based researchers, the INCITE program seeks research proposals for capability computing: production simulations—including ensembles—that use a large fraction of the LCF systems or require the unique LCF architectural infrastructure for high-performance computing projects that cannot be performed anywhere else. *Submitting a Proposal* Please visit http://proposals.doeleadershipcomputing.org for details about the proposal requirements. Proposals will be accepted until a call deadline of 11:59 p.m. EDT, Friday, June 26, 2015. Awards will be announced in November 2015. *INCITE Proposal Writing Webinar* In preparation for the call for proposals, the INCITE program invites you to participate in an INCITE Proposal Writing Webinar, offered on May 27 and repeated June 1. Free and open to the public, the webinars will provide both prospective and returning users the opportunity to get specific answers to questions about how to write an effective INCITE proposal. The INCITE Program Manager and each of the two Leadership Computing Facility centers will present. The webinars will run approximately 1.5 hours. See http://www.doeleadershipcomputing.org/2016-incite-proposal-writing-webinar/ for registration. *Early Access* Director’s Discretionary requests for limited early access to Mira and Titan can be submitted any time but we recommend that if you plan to submit an INCITE proposal this year that you do not delay in requesting access. Authors often use this access to generate benchmarking data in preparation for the INCITE call for proposals. See the Related Links at www.doeleadershipcomputing.org/contact/ for contacts. Please do not hesitate to contact me if you wish to discuss this opportunity in more detail. Sincerely, Jack Wells Jack Wells Director of Science National Center for Computational Science Oak Ridge National Laboratory Phone: (865) 241-2853

8 years, 12 months

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

aspuru-list May 2015