aspuru-list February 2016

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34 participants
57 discussions

[Aspuru-Guzik Group List] TODAY - ITAMP/HQOC Joint Quantum Sciences Seminar: David DeMille

by Ploucha, Clare Dolores

HQOC/ITAMP Joint Quantum Sciences Seminar Wednesday, February 10, 2016 4:00 PM, Jefferson 250 Prof. David DeMille (Yale) "Direct laser cooling and trapping of polar molecules" The advent of laser cooling and trapping ignited a scientific revolution in atomic physics. However, it was long considered a practical impossibility to extend these methods to molecules. Here, unlike in atoms, photon absorption can excite internal degrees of freedom (vibration and rotation), which both interrupts the optical cycling needed for motional cooling and leads to internal-state heating. Our group has now demonstrated that, nevertheless, methods very similar to those of standard atomic laser cooling and trapping that can be applied to some molecules. We have achieved Doppler and sub-Doppler cooling in 1-D, radiation pressure slowing and stopping of a molecular beam, and most recently 3-D magneto-optical trapping of SrF molecules at temperatures below 1 mK. This promises to open a wide range of scientific applications from precision measurements of interest in particle physics, to quantum information simulation, to precise control over chemical reactions. In this talk I will discuss our methods and results, and give an outlook on future directions arising from this work. Ivan Kozyryev (Doyle Group) "Towards Laser Cooling of Complex Polyatomic Molecules" Cold dense samples of diverse polyatomic molecules will open new research avenues in physics and chemistry. However, the absence of closed vibronic transitions inhibits scattering of thousands of photons required for laser cooling and trapping. Linear geometry, diagonal Franck-Condon factors, short radiative lifetimes and unresolved hyperfine splittings make SrOH a particularly attractive candidate for Doppler cooling. Using rotationally closed branch of the X-A electronic transition we demonstrate deflection of the SrOH beam through radiative force. Inspired by our experimental results on SrOH, we identify a general scheme for optical cycling in certain larger molecules with six or more atoms. Student Presentation from 4:00-4:10 PM Refreshments Served from 4:00-4:30 PM Guest Presentation from 4:30-6:00 PM -- Clare Ploucha Faculty Assistant to Professors Lukin & Greiner and their labs Department of Physics 17 Oxford St., Lyman 324A Cambridge, MA 02138 P. (617) 496-2544

8 years, 3 months

[Aspuru-Guzik Group List] Enthought (scientific computing suite using python) + python training course free

by Salvatore Mandrà

Hi Everyone, Either you are a massive user of python and you would like to have a comprehensive suite of tools or you want to learn more python for scientific computing (as myself), I suggest you to take a look at Enthought <https://enthought.com/> software. It's a high profile scientific computing suite and it's free by using your Harvard account. In addition, with the academic license, you can accede to many webseminars ranging from the basics of python to more advanced topics. Here the link for the academic license: https://www.enthought.com/products/canopy/academic/ Best, Salvatore

8 years, 3 months

[Aspuru-Guzik Group List] Kenta Honda arrives tomorrow!

by Steven A. Lopez

Dear group, Kenta will visit us Thursday and Friday. We have lots of open time slots to meet with him, please let me know by the end of the day if you want to meet with him and a preferred time. Thanks, Steven -- Steven A. Lopez, PhD Postdoctoral researcher, Aspuru-Guzik group Department of Chemistry & Chemical Biology Harvard University

8 years, 3 months

[Aspuru-Guzik Group List] Fwd: Aspuru-Guzik Photography 02/11

by Marlon Cummings

Please tidy-up your spaces for tomorrow. Thanks!! --------------- *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/>* ---------- Forwarded message ---------- From: Norris, Paul <NORRIS(a)ellenzweig.com> Date: Wed, Feb 10, 2016 at 9:49 AM Subject: Aspuru-Guzik Photography 02/11 To: "Cummings, Marlon" <marloncummings(a)chemistry.harvard.edu> Cc: "Cahalane, Neil" <Cahalane(a)ellenzweig.com>, "Hunt, Catherine" < Hunt(a)ellenzweig.com>, "Baykal, Oguz" <Baykal(a)ellenzweig.com> Marlon, I would like to confirm that we are still good to come to photograph tomorrow afternoon. My colleague and I will be arriving just before 2:30 and be there until 5:30ish. I believe that we will start in Alan’s office and then work in the area just down the hall. If time allows, we would then go on to “Siberia”. Can you please alert the group and ask if they can tidy-up a bit. We do not want sterile, vacant spaces so if people can be in the spaces at the time we are there, great. Best regards, <norris(a)ellenzweig.com> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ellenzweig.com_&d=C…>

8 years, 3 months

Re: [Aspuru-Guzik Group List] Aspuru-Guzik Photography 02/11

by Marlon Cummings

Confirmed. *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/>* On Wed, Feb 10, 2016 at 9:49 AM, Norris, Paul <NORRIS(a)ellenzweig.com> wrote: > Marlon, > > > > I would like to confirm that we are still good to come to photograph > tomorrow afternoon. My colleague and I will be arriving just before 2:30 > and be there until 5:30ish. > > > > I believe that we will start in Alan’s office and then work in the area > just down the hall. If time allows, we would then go on to “Siberia”. > > > > Can you please alert the group and ask if they can tidy-up a bit. We do > not want sterile, vacant spaces so if people can be in the spaces at the > time we are there, great. > > > > Best regards, > > > > > > <norris(a)ellenzweig.com> > > <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ellenzweig.com_&d=C…> > > >

8 years, 3 months

[Aspuru-Guzik Group List] ITAMP lunch seminar - Francesco Casola, Harvard (02/05)

by Igor Pikovski

*ITAMP Topical Lunch Discussion* Date: Friday, February 5th 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:* Francesco Casola(Harvard) *Title:*Harnessing one (electron spin) to measure them all *Abstract: *In recent years, the coherent manipulation and optical addressing of a single electronic spin in nitrogen-vacancy (NV) centers in diamond has emerged as a potential non-perturbative tool to obtain nanoscale spatial and quantitative local information of condensed matter magnetism. In this talk I will present fundamental concepts and review recent results of space-resolved NV magnetometry in the study of novel spin textures and collective spin dynamics of correlated electron systems. Beyond magnetic sensing applications, I will finally present ideas and outline challenges to observe coherent interactions between NVs and fundamental excitation modes in collinear ferromagnets. -- Dr. Igor Pikovski Institute for Theoretical Atomic, Molecular and Optical Physics (ITAMP) Harvard-Smithsonian Center for Astrophysics 60 Garden St, MS-14; Cambridge, MA 02138, USA Tel.: +1 (617) 496-7613 e-mail: igor.pikovski(a)cfa.harvard.edu www.cfa.harvard.edu/~igor.pikovski/

8 years, 3 months

[Aspuru-Guzik Group List] Away Next Week

by Marlon Cummings

Guys: I'll be away on vacation all of next week. 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, 3 months

[Aspuru-Guzik Group List] Excitonics Seminar TODAY Feb 9 at 3PM in 36-428

by Catherine M Bourgeois

Please post and forward to your groups CENTER FOR EXCITONICS SEMINAR SERIES<http://www.rle.mit.edu/excitonics/event-type/seminar-series/> Molecular evolution meets biophysics: the history of the RubisCO enzyme and the Fenna-Matthews-Olson (FMO) complex February 9, 2016 at 3:00pm/36-428* *please note time change to 3:00 pm instead of 4:30 pm Romain Studer The European Bioinformatics Institute, European Molecular Biology Laboratory (EMBL-EBI) [studer_romain_web] Ancestral sequence reconstruction allows the inference of a protein's past characteristics at a particular point during its evolution. The inferred ancestral sequence can be modelled in 3D, assuming a structural template exists. Having ancestral structures allows a better understanding of protein evolution and protein function. Ultimately, the ancestral sequence can be resurrected in vitro by synthesis and purification and its properties can be studied using the standard protocols, used its for modern counterparts. Recent successful studies using ancestral sequence reconstruction have focused on old proteins (Groussin et al., Biol Lett. 2013), nuclear receptors (Harms et al., PNAS 2013) or cetacean myoglobins (Dasmeh P. et al., PLOS Comp Biol 2013). In this talk, I will give an introduction to methodologies used to infer ancestral sequences and to identify amino acids under selective pressures. I will present some studies that successfully used these methods. Finally, I will present my recent work on RubisCO (Ribulose-1,5-bisphosphate carboxylase/oxygenase), the main enzyme responsible for the fixation of CO2 in bacteria and plants (Studer RA et al., PNAS 2014) and our current collaborative project on the Fenna-Matthews-Olson (FMO) complex, which participate in energy transfer in Bacteria. Romain Studer is a postdoctoral fellow within the lab of Dr. Pedro Beltrao at the European Bioinformatics Institute (EMBL-EBI) in Cambridge, UK. He is now studying the evolution of posttranslational modification (PTM) of amino acids. He did his PhD at University of Lausanne (2005-2009), under the supervision of Prof. Marc Robinson-Rechavi. He studied the impact of whole-genome duplications in vertebrates' evolution and initiated the development of Selectome, a database of positive selection. In 2010, he collaborated with Prof. Bernard Rossier (University of Lausanne) to work on the evolution of sodium regulation. He then received a fellowship grant from the Swiss National Science Foundation to continue his research at University College London within the lab of Prof. Christine Orengo (2010-2013). He conducted several evolutionary projects, on the RubisCO enzyme and on the coagulation system. His research interest is to study the evolution of biological systems by integrating knowledge from phylogenetic inference, structural information and biochemical function. 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 Energy Sciences

8 years, 3 months

[Aspuru-Guzik Group List] February 10, 2016 - ITAMP/HQOC Joint Quantum Sciences Seminar: David DeMille

by Ploucha, Clare Dolores

8 years, 3 months

[Aspuru-Guzik Group List] Siria Leaving Now

by Siria Serrano

Team, I will start on my two-trains-and-a-hike commute home. I will see you all tomorrow morning. Please be safe out there and stay warm. Cheers, Siria -- *Siria Serrano* *Faculty Assistant* *Aspuru-Guzik Group* *Harvard University **Department of Chemistry and Chemical Biology* *12 Oxford St. M 136* *Cambridge, MA 02138* *P:** (617) 496-1716 <%28617%29%20496-1716>** F: **617-496-9411 <617-496-9411>*

8 years, 3 months

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aspuru-list February 2016