aspuru-list May 2015

aspuru-list@lists.fas.harvard.edu

17 participants
48 discussions

[Aspuru-Guzik group list] For the quantum aficionados

by Alan Aspuru-Guzik

http://phys.org/news/2015-05-quantum-emulated-classical.html Note the signal processing limits seem to pan out at 95 qubits... Interesting fact to further show why QC will be so awesome. 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, 10 months

[Aspuru-Guzik group list] [qip] Friday the 29th

by Edward Farhi

Hi Quanta We will meet on Friday the 29th at 11:00 in 6-310. We will catch up! Best, 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

8 years, 10 months

[Aspuru-Guzik group list] Reminder - no group meeting tomorrow

by Ian Kivlichan

Hi all, Just a reminder that there will be no group meeting tomorrow due to commencement. Instead, please take a moment to check out the lab Google calendar <https://www.google.com/calendar/embed?src=k9494ibh4l1fgfm9q8fmat79ek%40grou…> or sync it with yours. The lab calendar also has info for events other than group meetings. The group meetings schedule is currently good for June, but I'm working on additions for July and August soon. If you have an upcoming GAC / talk / something you'd like to present, group meeting could be a good venue to get feedback - send me an email, and I can put you in! Best, Ian

8 years, 10 months

[Aspuru-Guzik group list] ITAMP lunch seminar - Jesper Levinsen, Monash University, Melbourne (05/29)

by Richard Schmidt

Dear colleagues, for the final ITAMP lunch discussion of this semester we are happy to have Jesper Levinsen from Monach University in Melbourne as our speaker. Jesper is here the rest of the week. If you would like to meet with him, here is the link to the schedule: https://docs.google.com/spreadsheets/d/15hcUWC4JCZFbuLtyj0yYVNDGqw5Nqm0d4vD… <https://docs.google.com/spreadsheets/d/15hcUWC4JCZFbuLtyj0yYVNDGqw5Nqm0d4vD…> Kind regards, Richard and Swati ITAMP Topical Lunch Discussion Date: Friday, May 29th 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: Jesper Levinsen, Monash University, Melbourne Title: Strong-coupling ansatz for the one-dimensional Fermi gas in a harmonic potential Abstract: The one-dimensional (1D) Fermi gas with repulsive short-range interactions provides an important model of strong correlations and is often amenable to exact methods. However, in the presence of confinement, no exact solution is known for an arbitrary number of strongly interacting fermions. Here, we propose a novel ansatz for generating the lowest-energy wavefunctions of the repulsive 1D Fermi gas in a harmonic potential near the Tonks-Girardeau limit of infinite interactions. We specialize to the case of a single impurity particle interacting with N majority particles, where we may derive analytic forms of the approximate wavefunctions. Comparing with exact numerics, we show that the overlap between the wavefunctions from our ansatz and the exact ones in the ground-state manifold exceeds 0.9997 for N<8. Moreover, the overlap for the ground-state wavefunction at strong repulsion extrapolates to ~0.9999 in the thermodynamic limit. Thus, our ansatz is essentially indistinguishable from "numerically exact" results in both the few- and many-body limits. --------------------------- 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, 10 months

[Aspuru-Guzik group list] FYI: Positions in Animesh Datta's group

by guerreschi＠fas.harvard.edu

Dear all, Last week visitor, prof. Animesh Datta, is moving his group to Warwick, UK. He has some openings in excitonics that he asked to share: http://www2.warwick.ac.uk/fac/sci/physics/research/theory/research/qinfo/jo… If interested, please contact him at: Animesh.Datta(a)warwick.ac.uk Regards, Gian Giacomo

8 years, 10 months

[Aspuru-Guzik group list] Interesting edX course

by Alan Aspuru-Guzik

https://www.edx.org/course/making-science-engineering-pictures-mitx-0-111x#… -- 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, 10 months

[Aspuru-Guzik group list] [qip] meeting today at 11

by Aram Harrow

Dear quanta, For those who are around, let's meet as usual at 11am in the usual spot. -aram _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

8 years, 11 months

[Aspuru-Guzik group list] Fwd: Fall Data Science Fellowship Opportunity

by Alan Aspuru-Guzik

---------- Forwarded message ---------- From: *Michael Li* <michael.li(a)mailg.thedataincubator.com> Date: Friday, May 22, 2015 Subject: Fall Data Science Fellowship Opportunity To: alan(a)aspuru.com Hi Aln, I would be extremely grateful if you could forward this opportunity onto *masters*, *PhDs*, and *postdocs* in your department. ------------------------------ *Program:* The Data Incubator is an intensive 7 week fellowship that prepares masters, PhDs, and postdocs in STEM + social science fields seeking industry careers as data scientists. The program is free for fellows and supported by sponsorships from dozens of employers across multiple industries. In response to the overwhelming interest in our earlier sessions, we will be holding another fellowship. *Locations:* There will be both an in-person (in NYC, DC, SF) and online section of the fellowship. There is a common application for both the online and in-person sections. *Dates:* All sections will be from 2015-09-08 to 2015-10-16 *Application Link*: http://www.thedataincubator.com/#apply?ref=wYWxhbkBhc3B1cnUuY29t *Who should appl?:* Anyone within one year of graduating from a masters or PhD program or who has already obtained a masters or PhD is welcome to apply. Applications from international students are welcome. Everyone else is encouraged to sign-up for a future session <http://www.thedataincubator.com/#apply?ref=wYWxhbkBhc3B1cnUuY29t>. For additional information, checkout our blog <http://blog.thedataincubator.com>, Venture Beat article <http://venturebeat.com/2014/04/15/ny-gets-new-bootcamp-for-data-scientists-…>, or Harvard Business Review piece <http://blogs.hbr.org/2014/08/the-question-to-ask-before-hiring-a-data-scien…> . Sincerely, Michael Postdoc, Cornell If you would like to stop receiving quarterly notices about postdoc opportunities, please notify us here <http://www.thedataincubator.com/unsubscribe2.html?email_list=marketing>. -- 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, 11 months

[Aspuru-Guzik group list] Special Group Meeting, 5/22, 2pm - Div Room

by Salvatore Mandrà

Hi Everyone, Tomorrow (Friday, 22th at 2pm, Div. Room) we will have a special group meeting given by Prof. Animesh Datta of University of Warwick, UK. The talk is focused on quantum imaging and sensing, but Prof. Datta is also interested in boson sampling and excitonics. Please see below for the title and abstract of his talk. Salvatore ----------------------------------------------------------------------------------------------------- Title: Sensing and imaging at the quantum limit Quantum correlated probes have the potential of delivering enhanced precision in estimating individual parameters. Obtaining quantum enhancements in scenarios of wider appeal such as imaging require an understanding of the quantum limits of estimating several parameters across multiple modes simultaneously. The problem is made theoretically and well as practically interesting and non-trivial by the possible non-commutativity of the optimal measurements needed to attain the quantum limits for estimating individual parameters. We present developments on the quantum theory of estimating multiple parameters -- arising from both unitary dynamics as well as decoherence -- simultaneously in a few scenarios, and its ramifications in the imaging of real-world samples. Time permitting, I will discuss some of our recent results on the possible role of weak measurements in quantum enhanced sensing.

8 years, 11 months

[Aspuru-Guzik group list] Group Meeting, May 21, 2:30 PM Div Room

by Ian Kivlichan

Hi all, Today's group meeting will be given by Borja (title abstract inline after this message). Please note that this group meeting covers confidential work in progress, so visitors are unfortunately not welcome! Also, though I originally planned to send group meeting emails the morning of, some have suggested the day before would be preferable: I will send them at 6 PM the day before going forward, but please let me know your preferences. :-) Finally, please note that there will be no group meeting next week (May 28th). Best, Ian ------------------------------------- TITLE: Microwave Boson Sampling ABSTRACT: Quantum computers are expected to be more efficient than any classical computing device by exploiting quantum mechanical properties, such as superposition and entanglement. However, before being able to outperform classical computers, quantum computers must first solve the practical issue of finding a scalable architecture. As evidence thereof, preserving the quantum nature of a many-body system, even at the level of tens of qubits, continues to pose a huge technological challenge. On the other hand, during the past few years there has been a growing interest in the so-called Boson Sampling device, an intermediate quantum machine that, though not universal for computing, would be capable of solving a classically intractable problem, namely that of sampling from the output distribution of passive linear optics networks -- a problem considered hard for situations with as few as 20 photons. However, current Boson Sampling realizations with photonic networks are not scalable, as one cannot deterministically generate single photons on demand. In this talk, I will give a brief overview of the Boson Sampling problem, and present a scalable Boson Sampling implementation with superconducting circuits. With our proposal, one should be able to perform deterministic state preparation and high-fidelity photon detection. To the best of our knowledge, this constitutes the most realistic implementation of fully scalable Boson Sampling.

8 years, 11 months

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aspuru-list May 2015