aspuru-list April 2014

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35 participants
87 discussions

[Aspuru-Guzik group list] [IACS-events] REMINDER: IACS Seminar with Spiros Mancoridis (Drexel University)--- TOMORROW, FRIDAY 4/25

by Baker, Natasha

Date: Friday, April 25, 2014, Location: Maxwell-Dworkin G115, 33 Oxford Street, Cambridge, MA 02138 Speaker: Spiros Mancoridis, Professor of Computer Science & Sr. Assoc. Dean of Computing, Drexel University Time: Informal lunch with speaker, 12:30pm. Talk, 1:00pm Title: Host-based Online Behavioral Malware Detection and Classification gCal<https://www.google.com/calendar/render?cid=http://www.seas.harvard.edu/cale…> iCal<UrlBlockedError.aspx> Abstract: The complex computing systems employed by governments, corporations, and other institutions are frequently targeted by cyber-attacks designed for espionage and sabotage. The malicious software used in such attacks are typically custom-designed or obfuscated to avoid detection by traditional antivirus software. Our goal is to create a malware detection and classification system that can quickly and accurately detect and classify such malware. We pose the problem of malware detection as a multi-channel change-point detection problem, wherein the goal is to identify the point in time when a system changes from a known clean state to an infected state. In this talk, I will present a host-based malware detection system designed to run at the hypervisor level, monitoring hypervisor and guest operating system sensors and sequentially determining whether the host is infected. I will also describe an automatic classification system that can be trained to accurately identify new variants within known malware families, using observed similarities in behavioral features extracted from sensors monitoring live computers hosts. A case study wherein the detection system is used to detect various types of malware on an active web server under heavy computational load will be presented. Speaker bio: Spiros Mancoridis is a Professor of Computer Science at Drexel University and the Senior Associate Dean of Computing in the College of Computing and Informatics. Professor Mancoridis’ expertise includes malware detection and classification, autonomic computing, software design and architecture, reverse engineering, software security, genetic algorithms, and software engineering education. He is the recipient of the National Science Foundation’s 1998 CAREER Award and a senior member of the IEEE and ACM. Professor Mancoridis has authored or co-authored more than 80 refereed technical publications. In 2008 Professor Mancoridis was recognized with an Outstanding Researcher Award from the College of Engineering at Drexel University. Please 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

10 years

[Aspuru-Guzik group list] [qip] of interest

by Edward Farhi

> > > > Dear Physics Community, > > Please join us for The Morris Loeb Lectures in Physics 2014 at Harvard University featuring a special guest Prof. Marc Mézard, Director, Ecole Normale Supérieure, Paris (http://lptms.u-psud.fr/membres/mezard/) > Monday, April 28 @ 4:15pm, Colloquium in Jefferson 250, 17 Oxford Street, Cambridge (Tea in the Physics Library, Jefferson 450 @ 3:30pm) > > “The spin glass cornucopia” > > For more than 30 years, the spin glass puzzle has stimulated a large activity in statistical physics, and led to several breakthroughs. While the puzzle of spin glass materials is still not fully solved, their theoretical analysis has created a very rich conceptual framework, as well as powerful techniques, to study emergent properties of strongly disordered and interacting systems. These have been successfully applied to a broad spectrum of other disciplines, from finance to computer science and information theory, where slow -glassy- dynamics and phase transitions play a key role. The talk will survey this spin glass saga, focusing on its developments outside of physics. > > Tuesday, April 29 @ 2:30pm, Jefferson 250, 17 Oxford Street, Cambridge > > “Phase transitions in hard computer science problems” > > A new field of research is rapidly expanding at the crossroad between statistical physics, information theory and combinatorial optimization. It deals with problems which are very important in each of these fields, likespin glasses, error correction, or satisfiability. In recent years, it has been realized that physical phenomena, familiar from glass phenomenology, occur in large classes of algorithms that have been developed to study some of the hardest computer science problems. Realizing that extreme slowdown and glassy phase transitions occur in computer programs is interesting both theoretically, as it opens new perspectives to the study of algorithmic complexity, as well as practically : it allows to develop new kind of efficient algorithms, inspired from insights obtained through the “replica method” and the “cavity method’’. This talk will survey these recent developments, focusing on the conceptual leap induced by the use of spin glass theory in hard constraint satisfaction problems. > > Wednesday, April 30 @ 2:00pm, Science Center Hall A, One Oxford Street, Cambridge > > “Occam’s razor in massive data acquisition: a statistical physics approach” > > Science is facing several challenges related to data explosion. How to acquire a large amount of information in short time? How to extract significant data? In recent years, studies in compressed sensing have triggered very interesting developments on these issues. Compressed sensing consists in sampling a sparse signal at low rate, and later using computational power for its exact reconstruction, so that only the necessary information is measured. Currently used reconstruction techniques are, however, limited to acquisition rates larger than the true density of the signal. We shall describe new procedures, based on a statistical physics analysis, which is able to reconstruct exactly the signal with a number of measurements that approaches the theoretical limit for large systems. > > Please contact me if you have any questions. We’re looking forward to seeing you at the lectures. > > Kind regards, > Monika > > Monika Bankowski | Administrator to the Chair | Department of Physics| Harvard University > 17 Oxford St.| Jefferson Lab. Room 370 | Cambridge, MA 02138 | Tel: (617) 495-2866 > > Edward Farhi farhi(a)mit.edu _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

10 years

[Aspuru-Guzik group list] Igor Lesanovsky - HQOC/ITAMP Joint Quantum Sciences Seminar

by Hamilton, Joan

HQOC/ITAMP Joint Quantum Sciences Seminar Wednesday, April 23, 2014, 4:00 PM, Jefferson 250 Prof. Igor Lesanovsky, University of Nottingham Out of Equilibrium Dynamics of Strongly Interacting Rydberg Gases in a Dissipative Environment The most recent generation of cold atom experiments uses atoms in Rydberg states to explore many-body phenomena. In this talk, I will focus on the non-equilibrium dynamics of such systems where non-trivial behavior is generated by the competition between coherent laser excitation, dissipation and the strong interaction between Rydberg atoms. I will discuss the relaxation of Rydberg lattice gases, showing that it is hierarchical and strongly correlated. This establishes a connection to kinetically constrained systems that are used in soft condensed matter physics as models for the description of glassy phenomena. Student Presentation by Michael Moebuis, Mazur Group Integrated Photonics as an Efficient Source of 3-Photon Entangled States. Student Presentation Begins at 4:00 PM Refreshments are served from 4:10-4:30 PM Guest Presentation Begins at 4:30 PM Joan Hamilton Faculty Assistant to Profs. Greiner and Lukin HQOC Laboratory Administrator HUCTW Local Union Representative Harvard University Department of Physics 17 Oxford Street Cambridge, MA 02138 P: (617) 496-2544 F: (617) 496-2545

10 years

[Aspuru-Guzik group list] Aspuru Group Meeting Thursday 24th at 2:30 pm in Cabot Division Room

by Felipe Herrera

Hi everyone, Tomorrow our visitor, Prof. Hans Peter Lüthi from ETHZ, will give an introductory talk about his research during our group meeting. See the title and abstract of his talk below. Best, Felipe Herrera *Title:* Assisting the Search for Novel Materials Using Computation: Donor/Acceptor Functionalization of pi-conjugated Systems *Abstract: *For the rational design of molecular materials, having a notion of the relationship between the (electronic) structure and the properties of the target systems is essential. In this lecture, we will focus on the response of pi-conjugated backbones to donor-acceptor functionalization, and we will see what is driving the reactivity of hypervalent iodanes, reagents used to functionalize aromatic species. Some of this analysis maps rather complex information obtained from quantum chemical calculations onto simple concepts, such as Lewis structures or localized orbitals. This, however, allows for the definition of simple molecular design rules, some of which were proven useful in experiment. Finally, the processing of large amounts of data obtained from quantum chemical computations, a key issue in modern computer-aided modelling, will be addressed.

10 years

[Aspuru-Guzik group list] recruiting tutors for Clubes de Ciencia, Mexico, Summer 2014

by Adrian Jinich

Hi Lab, The Clubes de Ciencia Mexico (Science Clubs), which some friends and I are organizing, are starting to recruit instructors to lead 1 week science workshops for Mexican undergrad students this summer. All the info can be found here: http://quieroaprender.masporfavor.com/participar/tutors/ And here are two youtube videos on the project. Audio is in spanish, but with english subtitles. You can also ask the following current or former or future AAG lab members about their experience in the Clubes de Ciencia: Ian Dunn Roberto Olivares Benjamin Sanchez-Lengeling (joining next fall) Undergrads, PhD´s, and Postdocs, and researchers (this includes the super programmers over at Biolabs :) ) are welcome to apply to be instructors!!! And I would be more than happy to answer any questions. best, Adrian -- Adrian Jinich Aspuru-Guzik Lab Harvard University 12 Oxford Street Cambridge, MA 02138 ajinich(a)fas.harvard.edu http://aspuru.chem.harvard.edu/adrian-jinich/

10 years

[Aspuru-Guzik group list] Sour Cream Walnut Bread looking for a home

by Jennifer Wei

By the Big Office Printer. Help it out!

10 years

[Aspuru-Guzik group list] Invitation to Present at AMO Poster Session - May 5

by Hamilton, Joan

Members of the AMO Community, Immediately after the Physics Colloquium on Monday, May 5 by Atac Imamoglu (ETH), there will be an ITAMP reunion poster session and reception in the Jefferson Library. If you're interested in presenting a poster, please email Naomi Tariri, ntariri(a)cfa.harvard.edu, by April 25. Many thanks, Joan Joan Hamilton Faculty Assistant to Profs. Greiner and Lukin HQOC Laboratory Administrator HUCTW Local Union Representative Harvard University Department of Physics 17 Oxford Street Cambridge, MA 02138 P: (617) 496-2544 F: (617) 496-2545

10 years

[Aspuru-Guzik group list] ITAMP topical lunch discussion: Friday, April 25 @ 12:00

by tony.lee＠cfa.harvard.edu

ITAMP Topical Lunch Discussion Date: FRIDAY, April 25 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*: Roberto Onofrio *Affiliations*: Department of Physics and Astronomy 'Galileo Galilei', University of Padua and ITAMP *Abstract*: Quantum physics and gravitation have been considered for a long time as two non-overlapping theories, with prevalent domain of applicability in the micro and macroworld, respectively. Yet, in our search for a unified picture of Nature we need to find situations in which there is cross-talk between the quantum and gravitation, to highlight possible contradictions and ways to overcome them. I will show how atomic physics may help to smooth out this situation, discussing two examples related to macroscopic consequences of the Higgs field in astrophysics and gravitation, and microscopic consequences of a conjecture in which weak interactions are interpreted as manifestations of gravity at the Fermi scale.

10 years

[Aspuru-Guzik group list] ITAMP topical lunch discussion: TUESDAY, April 22 @ 12:30

by tony.lee＠cfa.harvard.edu

ITAMP Topical Lunch Discussion This week, we will have two lunch discussions: Tuesday and Friday. Note different time and location for Tuesday. Date: TUESDAY, April 22 Time: 12:30-2:00 pm Pizza will be served. Location: B-105 @ 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-105 is there. *Speaker*: Prof. Igor Lesanovsky (University of Nottingham) *Title:* Dynamical Phases of Open Quantum Systems *Abstract:* In the talk I will give an overview of our recent work on the non-equilibrium dynamics of open (many-body) quantum systems. These systems are described by a quantum Master equation of Lindblad form. To characterise their non-equilibrium properties we make use of the unravelling of the dynamics in terms of stochastic quantum jump trajectories. To classify dynamical phases we introduce as a dynamical order parameter the number of quantum jumps in a specific time interval. This approach rather naturally leads to a framework (called the s-ensemble) that permits an understanding of the non-equilibrium phase structure from a perspective that is very similar to that of equilibrium statistical mechanics. I will first demonstrate the approach for a driven three-level atom diplaying intermittency in its quantum jumps which is controlled by the driving fields. Then I will discuss a dissipative version of the quantum Ising model where such intermittency occurs as well but unlike in the previous case is a genuine many-body effect. Finally, I will focus on a strongly interacting many-body system with kinetic constraints that displays a dynamical transition which is not accompanied by a change in the stastics. This feature results in non-trivial and strongly correlated relaxation behaviour.

10 years

[Aspuru-Guzik group list] [IACS-events] IACS Seminar with Spiros Mancoridis (Drexel University) FRIDAY, 4/25

by Baker, Natasha

10 years

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aspuru-list April 2014