aspuru-list April 2014

aspuru-list@lists.fas.harvard.edu

35 participants
87 discussions

[Aspuru-Guzik group list] [qip] Special Seminar Wednesday - Renato Renner

by Shelby Kimmel

Hi Everyone, This week we have a special quantum information seminar given by Renato Renner. He will be speaking Wednesday April 2 at 4:30 (note time change from standard seminar!) in room 6C-442. Title and and abstract are below. Hope to see you there. Best, Shelby Title: Reliable Quantum State Tomography Abstract: Quantum state tomography is the task of estimating the state of a quantum system using measurements. Typically, one is interested in the (unknown) state generated during an experiment which can be repeated arbitrarily often in principle. However, the number of actual runs of the experiment, from which data is collected, is always finite (and often small). As pointed out recently, this may lead to unjustified (or even wrong) claims when employing standard statistical tools without care. In this talk, I will present a method for obtaining reliable estimates from finite tomographic data. Specifically, the method allows the derivation of confidence regions, i.e., subsets of the state space in which the unknown state is contained with probability almost one. This is joint work with Matthias Christandl, see also arXiv:1108.5329. -- Shelby Kimmel PhD Candidate in Physics Massachusetts Institute of Technology www.mit.edu/~skimmel _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

9 years, 6 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] Free black vinyl couch-bed with 3 storage drawers

by Aspuru

Dear group members, Dori and I are rearranging furniture at home and will not need this couch-bed anymore. It cost us originally 500 back in the bay area circa 2005. We used to have it in our living room when I was a postdoc. It is well preserved and has great storage drawers. It is *free* to the first group member that agrees to come to my house (Cambrigeport) and take it away before next Saturday when we have other furniture come in. It is great as a guest bed! I will send another picture of it in the next message. Again, first come, first-serve. Alan Aspuru-Guzik Associate Professor Harvard University http://aspuru.chem.harvard.edu Sent from my mobile. Please pardon any typos.

9 years, 11 months

[Aspuru-Guzik group list] [qip] meet Sergey Bravyi

by aram harrow

Dear quanta, Sergey Bravyi is here starting tomorrow at 11, and until Friday afternoon. If you want to arrange a time to meet him, please email me, or email him directly at sbravyi(a)gmail.com. aram _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

9 years, 11 months

[Aspuru-Guzik group list] Fwd: PhD and Postdoc Openings in Copenhagen

by Salvatore Mandrà

FYI ---------- Forwarded message ---------- From: Shelby Kimmel <skimmel(a)mit.edu> Date: 2014-04-30 14:45 GMT-04:00 Subject: [Aspuru-Guzik group list] [qip] Fwd: PhD and Postdoc Openings in Copenhagen To: "qip(a)mit.edu" <qip(a)mit.edu> If you are looking for a phD/postdoc position or know someone who is, see below for a great opportunity. Contact Matthias at matthias.christandl(a)qubit.org if interested. Shelby Dear Colleagues, I have recently moved to sunny Copenhagen :) There are currently PhD openings in the department (including in quantum information theory). I would be grateful, if you could distribute the announcement to potential candidates: http://www.math.ku.dk/english/about/jobs/phd-stipends-fall-2014/ Please note that the deadline is very soon (10th of May 2014). There will also be postdoc openings in a few weeks. Interested candidates are encouraged to get in touch with me via email at their earliest convenience. Best wishes, Matthias. Matthias Christandl Professor Department of Mathematical Sciences Copenhagen University email: matthias.christandl(a)qubit.org -- Shelby Kimmel PhD Candidate in Physics Massachusetts Institute of Technology www.mit.edu/~skimmel _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip _____________________________________________ Aspuru-list mailing list Aspuru-list(a)lists.fas.harvard.edu https://lists.fas.harvard.edu/mailman/listinfo/aspuru-list

9 years, 11 months

[Aspuru-Guzik group list] [qip] Fwd: PhD and Postdoc Openings in Copenhagen

by Shelby Kimmel

If you are looking for a phD/postdoc position or know someone who is, see below for a great opportunity. Contact Matthias at matthias.christandl(a)qubit.org if interested. Shelby Dear Colleagues, I have recently moved to sunny Copenhagen :) There are currently PhD openings in the department (including in quantum information theory). I would be grateful, if you could distribute the announcement to potential candidates: http://www.math.ku.dk/english/about/jobs/phd-stipends-fall-2014/ Please note that the deadline is very soon (10th of May 2014). There will also be postdoc openings in a few weeks. Interested candidates are encouraged to get in touch with me via email at their earliest convenience. Best wishes, Matthias. Matthias Christandl Professor Department of Mathematical Sciences Copenhagen University email: matthias.christandl(a)qubit.org -- Shelby Kimmel PhD Candidate in Physics Massachusetts Institute of Technology www.mit.edu/~skimmel _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

9 years, 11 months

[Aspuru-Guzik group list] [qip] Bravyi talk this Friday

by aram harrow

Fri, May 2, 1:30 in 6C-442 Sergei Bravyi (IBM) Good Quantum Codes with Low-Weight Stabilizers Quantum codes with low-weight stabilizers known as LDPC codes have been actively studied recently due to their potential applications in fault-tolerant quantum computing. However, all families of quantum LDPC codes known to this date suffer from a poor distance scaling limited by the square-root of the code length. This is in a sharp contrast with the classical case where good families of LDPC codes are known that combine constant encoding rate and linear distance. In this talk I will describe the first family of good quantum codes with low-weight stabilizers. The new codes have a constant encoding rate, linear distance, and stabilizers acting on at most square root of n qubits, where n is the code length. For comparison, all previously known families of good quantum codes have stabilizers of linear weight. The proof combines two techniques: randomized constructions of good quantum codes and the homological product operation from algebraic topology. We conjecture that similar methods can produce good stabilizer codes with stabilizer weight n^a for any a>0. Finally, we apply the homological product to construct new small codes with low-weight stabilizers. This is a joint work with Matthew Hastings Preprint: arXiv:1311.0885 _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

9 years, 12 months

[Aspuru-Guzik group list] to young grad students of AAG lab, HUCE fellowship is recruiting

by Adrian Jinich

HUCE is awesome!! Nico and I can tell you more about it. They are recruiting. You should apply! See attached poster. 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/

9 years, 12 months

[Aspuru-Guzik group list] Lucid Chart Licenses

by Tim Hirzel

Hi Group, I have received free licenses for the group to use lucidchart.com, and on-line visio-esque, omnigraffle-esque, UML/flowchart/diagramming tool. So far, it's very easy to start using. If you would like a free license, send me the email that you would like me to invite. cheers, Tim

9 years, 12 months

[Aspuru-Guzik group list] OpenOffice

by Alan Aspuru-Guzik

Dear group members, Many of you are sending me OpenOffice,LibreOffice,etc. documents. I am fine if you use it (I have it too, and used to use it a lot) but I want you to export to Word or Powerpoint and test in Word that the formatting is good before sending me anything ! I have had much trouble especially with the presentation files. The OpenOffice writer documents look uglier than the Word ones (which are still usually ugly) and do not interact well with any collaborators. So let's settle on that as a standard when we don't use LaTeX. This is especially important for grants, grant reports, and the like. Best, 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

9 years, 12 months

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

aspuru-list April 2014