aspuru-list April 2013

aspuru-list@lists.fas.harvard.edu

54 participants
81 discussions

[Aspuru-Guzik group list] meeting with the speaker Leo Gross

by sarah mostame

Dear Group members, We are hosting Leo Gross ( http://researcher.watson.ibm.com/researcher/view.php?person=zurich-lgr), the speaker of the ITAMP-Harvard CCB quantum sciences seminar on Wednesday, April 10. Our group has been scheduled to meet with him 1:30-2:00 pm. His talk will be on "Individual Molecules Investigated by Scanning Probe Microscopy with Atomically Functionalized Tips". Please let me know if you are interested to meet with him. Best regards, Sarah ------ 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/

11 years

[Aspuru-Guzik group list] pizza in break room

by Joey Goodknight

11 years

[Aspuru-Guzik group list] New Group Member - Software Engineeer - Kai Trepte

by Marlon Cummings

Dear friends: Good morning and Happy Monday! Please join us in welcoming Mr. Kai Trepte, our newest group member and software engineer. Please take a moment to stop by and say hello. Kai's workstation is located in M104A. Welcome Kai! ------------------ 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] [qip] new time for Matthews talk: 3pm, Mon, 6C-442

by aram harrow

Dear quanta, Will Matthews' talk tomorrow will be at 3pm, in the same place: 6C-442. See below for the updated announcement, and sorry for this last-minute change in the time. -aram > speaker: Will Matthews (Cambridge) > > location: 6C-442 > > date/time: Mon, Apr 8, 3-4pm > > title: Finite blocklength converse bounds for quantum channels and > quantum non-signalling codes > > abstract: > I’ll talk about upper bounds on the rate of transmission of classical > and quantum information over quantum channels at finite block length, > with and without entanglement assistance, in terms of a unifying > framework of quantum hypothesis testing with restricted measurements, > and in terms of "quantum non-signalling codes", which I'll define. The > bounds generalise a converse of Polyanskiy et al. for classical > channels and a quantum channel converse of Renner and Wang. > > The talk will cover the joint work with Stephanie Wehner (available at > arXiv:1210.4722), as well as work (in progress) with Debbie Leung. > > > p.s. Will is visiting from Mon-Wed of next week. If you want to get > in touch with him, I've cc'ed him on this email. _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

11 years

[Aspuru-Guzik group list] Aidan Daly shared "TenurePartyPics" with you

by Dropbox

Aidan's message: "Hey guys! Here's the link with all the photos people have uploaded from the tenure party - hopefully everyone should be able to view/download them! - Aidan" Click here to view TenurePartyPics: https://www.dropbox.com/l/0PQPFXES7Lm7pIP3GmHPfc (Aidan shared this file using Dropbox. Enjoy!)

11 years

[Aspuru-Guzik group list] Dropbox for Tenure pictures

by Aidan Daly

Hey guys, Apparently there's no easy way to share a dropbox folder with edit permissions to an email list. What I think we can do instead is as follows: - If you have photos you'd like to upload, let me know and I'll add you to the folder - For everyone else, I will send out a link to the folder over the list which will allow you to view/download pictures but not upload. Sorry its such a pain - if someone knows a better way shoot me an email! - Aidan

11 years

[Aspuru-Guzik group list] REU Mentoring.

by Alan Aspuru-Guzik

If anybody is interested in REU mentoring (esp. the postdocs but also the graduate students are encouraged to do it) let me know over the weekend... let me do a Google Forms, here is the link to respond: https://docs.google.com/forms/d/187_PK-ZZecdGRIMWjeW0z_oPFHMaTigcGtSJaqn0pV… 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

11 years

[Aspuru-Guzik group list] FW: Seminar by R. Mirin, Monday April 8th, 10am, Allen Room (36‐462)

by Catherine M Bourgeois

FYI ---------- Forwarded message ---------- Hello, I am writing to invite you to a seminar on "Superconducting Single-Photon Detectors" coming Monday 10am in the Allen Room. The speaker will be Dr. Richard Mirin of NIST. The abstract of his talk is attached. Please forward to members of your group who may be interested. Best regards, Faraz Najafi ------------------------ Time: 10am, Monday, April 8th Location: Allen Room (36-462) Superconducting Single-Photon Detectors Richard Mirin, Quantum Electronics And Photonics Division at NIST, Boulder, CO I will discuss my group’s research on two different types of superconducting single-photon detectors and various experiments in quantum optics that require these high-efficiency detectors. Transition edge sensors (TESs) formed from thin tungsten films have demonstrated 98% system detection efficiency, with a dark count rate around 10 Hz, at a wavelength of 1550 nm. The TESs are also capable of photon-number resolution, which is important for generating various quantum states of light, such as cat states formed by photon subtraction. Superconducting nanowire single-photon detectors formed from tungsten silicide have recently demonstrated 93% system detection efficiency at 1550 nm, with a dark count rate of ~ 1Hz, timing jitter of ~150 ps, and reset time of 40 ns. We have assembled an 8-channel system with all devices having > 85% system detection efficiency for multiphoton correlation measurements. Such a system can be used for rapid joint spectral distribution measurements from a spontaneous parametric downconversion source of correlated photon pairs. I will also discuss recent progress on integrating these detectors with chip-scale waveguides as a step towards on-chip quantum photonics.

11 years

[Aspuru-Guzik group list] [qip] talk on Mon, 3:15pm, 6C-442

by aram harrow

speaker: Will Matthews (Cambridge) location: 6C-442 date/time: Mon, Apr 8, 3:15-4:15pm title: Finite blocklength converse bounds for quantum channels and quantum non-signalling codes abstract: I’ll talk about upper bounds on the rate of transmission of classical and quantum information over quantum channels at finite block length, with and without entanglement assistance, in terms of a unifying framework of quantum hypothesis testing with restricted measurements, and in terms of "quantum non-signalling codes", which I'll define. The bounds generalise a converse of Polyanskiy et al. for classical channels and a quantum channel converse of Renner and Wang. The talk will cover the joint work with Stephanie Wehner (available at arXiv:1210.4722), as well as work (in progress) with Debbie Leung. p.s. Will is visiting from Mon-Wed of next week. If you want to get in touch with him, I've cc'ed him on this email. _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

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

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aspuru-list April 2013