aspuru-list May 2014

aspuru-list@lists.fas.harvard.edu

31 participants
68 discussions

[Aspuru-Guzik group list] Fwd: Conference on Computational Physics 2014 / free registration

by Stéphanie Valleau

Dear all, I forward an email of possible interest - the International Conference on Computational Physics conference which is in Boston this August. Registration is apparently free for anyone of the Harvard comunity, I am not sure if this extends to postdocs, you would have to check with prof. Kaxiras. The deadline to register is quite soon though (June 1st) Best, Stephanie ---------- Forwarded message ---------- From: Efthimios Kaxiras <kaxiras(a)physics.harvard.edu> Date: Thu, May 29, 2014 at 11:18 AM Subject: Conference on Computational Physics 2014 Dear CSE Secondary Field students, now that courses are over I imagine you are all focusing on your research. Summer is always a good time to attend some conferences related to your interests. We are very lucky that this summer the International Conference on Computational Physics (CCP2014) is taking place in Boston, at BU, just across the river! You should check it out: http://ccp2014.bu.edu/ <https://urldefense.proofpoint.com/v1/url?u=http://ccp2014.bu.edu/&k=AjZjj3d…> We are even more lucky that the IACS will be a sponsor of this Conference, thanks to a generous Anonymous Gift. This means that all of our students can attend the Conference for *free* (registration would have been $250 for students). Actually, because of the sponsorship, this (free registration) applies to any member of the Harvard community, so you can spread the word to others who might be interested. CCP2014 covers an extraordinarily broad range of Physics. I strongly encourage you to take advantage of this opportunity and make the most of it. Deadline for abstracts for poster or oral presentations is June 1, so you should hurry to submit an abstract if you want to present your work. I'll be happy to talk to anyone of you if you need more details or advice on this. best regards, EK

9 years, 11 months

[Aspuru-Guzik group list] Fwd: Conference on Computational Physics 2014 / free registration

by Stéphanie Valleau

9 years, 11 months

[Aspuru-Guzik group list] ITAMP topical lunch discussion: Friday, May 30 @ 12:00

by tony.lee＠cfa.harvard.edu

ITAMP Topical Lunch Discussion Date: FRIDAY, May 30 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*: Beatriz Olmos (Nottingham) *Title: *Relaxation of interacting quantum many-body systems under purely dissipative dynamics *Abstract: *We study the relaxation dynamics of quantum interacting many-body systems that undergo purely dissipative dynamics but with non-classical jump operators that can establish quantum coherence. To gain a general understanding of the difference between the resulting dynamics with respect to that of classical rate equations we introduce a class of interacting quantum spin systems inspired by classical kinetically constrained models, which are widely used in the context of glass physics. The adequate choice of the jump operators here ensures that the values of diagonal observables such as the excitation density coincide in equilibrium with the classical ones, while the complex relaxation dynamics is a result of the intricate interplay between the non-classical jumps and the non-Hermitian time-evolution in the periods between them. Moreover, we show that the relaxation time of the coherences in these systems can be orders of magnitude longer than the one of the diagonal observables. Finally, we discuss the dynamics of strongly interacting Rydberg atoms under electromagnetically induced transparency (EIT) conditions. We show that this physical system --- which is currently under intensive study --- is indeed in some limit described by a purely dissipative dynamics with non-classical jump operators. We thoroughly study the stationary state and relaxation dynamics and analyze the limitations of the use of a classical rate equation model to capture the non-equilibrium behavior of this system.

9 years, 11 months

[Aspuru-Guzik group list] [qip] tomorrow

by Edward Farhi

Hi Quanta We will meet on Friday at 11:00 in 6-310 and Adam Sawicki will tell us what he has been doing. See you! 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

9 years, 11 months

[Aspuru-Guzik group list] Aspuru Group Meeting Thursday 29th at 2:30 pm in Cabot Division Room

by Felipe Herrera Urbina

Dear group, Tomorrow I will talk about a challenging (and crazy) idea involving organic molecular aggregates, optical cavities and coherent nonlinear optics. In particular we are trying to exploit the recently demonstrated strong coupling of organic media to the electromagnetic field of an optical microcavity, plus the strong dipole-dipole interaction between polar chromophores in order to identify conditions under which simple AMO phenomena including electromagnetically-induced transparency could be observed in near future experiments. I will spend a significant fraction of the talk providing a minimal background for those of you working in orthogonal problems. Then I will discuss a simple model introduced to qualitatively understand the nonlinear response of an organic microcavity and ask for your participation regarding the best way to numerically test the validity of the model in this complex system. See you there, Felipe

9 years, 11 months

[Aspuru-Guzik group list] 9:30-10:30am discussion: June 3rd visit by Prof. Zhenan Bao (Stanford)

by Martin Blood-Forsythe

Dear colleagues, The Aspuru-Guzik group discussion slot with Prof. Bao will be 9:30-10:30am, Tuesday, June 3rd, at the couches. I know that this is early for some, but it would be great if we could have a strong showing at this discussion session since Prof. Bao has been a long time collaborator and as a giant in the field of organic electronics. Please let me know if you plan to come to the discussion session so that I can have a rough idea of the head-count that we should expect. Best wishes, -Martin --------------------------------------------------- Martin Blood-Forsythe Graduate Student in Physics Harvard University Aspuru-Guzik Lab On Wed, May 28, 2014 at 12:18 PM, Martin Blood-Forsythe < mbloodforsythe(a)physics.harvard.edu> wrote: > Dear colleagues, > It appears that the email address listed in the CCB announcement is having > difficulties. Max can be reached at max(a)cmliris.harvard.edu. > Best wishes, > -Martin > > > --------------------------------------------------- > Martin Blood-Forsythe > Graduate Student in Physics > Harvard University > Aspuru-Guzik Lab > > > On Wed, May 28, 2014 at 12:12 PM, Martin Blood-Forsythe < > mbloodforsythe(a)physics.harvard.edu> wrote: > >> Dear colleagues, >> >> >> I am working on getting a slot for a group discussion with Prof. Zhenan >> Bao when she visits on June 3rd for CCB's student-invited materials >> chemistry seminar. >> >> >> If you are interested in attending lunch or dinner with her please reply >> to Max Mankin directly (mankin(a)fas.havard.edu). There are still many >> lunch spots and a few dinner slots available. >> >> >> Prof. Bao’s seminar, titled “Skin Inspired Electronics from Organic >> Materials”, will be at 4:15pm on June 3 in Pfizer Lecture Hall. >> >> Best wishes, >> -Martin >> > >

9 years, 11 months

[Aspuru-Guzik group list] June 3rd visit by Prof. Zhenan Bao (Stanford)

by Martin Blood-Forsythe

Dear colleagues, I am working on getting a slot for a group discussion with Prof. Zhenan Bao when she visits on June 3rd for CCB's student-invited materials chemistry seminar. If you are interested in attending lunch or dinner with her please reply to Max Mankin directly (mankin(a)fas.havard.edu). There are still many lunch spots and a few dinner slots available. Prof. Bao’s seminar, titled “Skin Inspired Electronics from Organic Materials”, will be at 4:15pm on June 3 in Pfizer Lecture Hall. Best wishes, -Martin

9 years, 11 months

[Aspuru-Guzik group list] Search for localized Wannier functions of topological band structures via compressed sensing

by sarah mostame

http://arxiv.org/abs/1405.6641 ------ Sarah Mostame, Ph.D. Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street, Room M104 Cambridge, MA 02138 email: mostame(a)fas.harvard.edu http://aspuru.chem.harvard.edu/sarah-mostame/

9 years, 11 months

[Aspuru-Guzik group list] group outing

by Joey Goodknight

Our fearless leader has semi-recently appointed me group-outing czar, so I am gauging interest in various activities we could go on as a group. Thus, please fill out this form by the end of the week and I'll do some more intense research on the favored activities! https://docs.google.com/forms/d/1uOBoAqw3x8Wq_JPGXO1CleKoNtdXOVlY2_81fFUg_w… Hope your weeks are going well and you're all staying warm! -Joey

9 years, 11 months

[Aspuru-Guzik group list] Talk of possible interest

by Guerreschi, Gian

Speaker: Beatriz Olmos, University of Nottingham. Title: Relaxation of interacting quantum many-body systems under purely dissipative dynamics Wednesday, May 28th 2014, 4:30pm MIT, Chemistry Department, 6-233 Abstract: We study the relaxation dynamics of quantum interacting many-body systems that undergo purely dissipative dynamics but with non-classical jump operators that can establish quantum coherence. To gain a general understanding of the difference between the resulting dynamics with respect to that of classical rate equations we introduce a class of interacting quantum spin systems inspired by classical kinetically constrained models, which are widely used in the context of glass physics. The adequate choice of the jump operators here ensures that the values of diagonal observables such as the excitation density coincide in equilibrium with the classical ones, while the complex relaxation dynamics is a result of the intricate interplay between the non-classical jumps and the non-Hermitian time-evolution in the periods between them. Moreover, we show that the relaxation time of the coherences in these systems can be orders of magnitude longer than the one of the diagonal observables. Finally, we discuss the dynamics of strongly interacting Rydberg atoms under electromagnetically induced transparency (EIT) conditions. We show that this physical system --- which is currently under intensive study --- is indeed in some limit described by a purely dissipative dynamics with non-classical jump operators. We thoroughly study the stationary state and relaxation dynamics and analyze the limitations of the use of a classical rate equation model to capture the non-equilibrium behavior of this system.

9 years, 11 months

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aspuru-list May 2014