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7234 discussions

[Aspuru-Guzik Group List] [qip] upcoming group meetings

by Aram Harrow

Dear quanta, A few of us have conflicts this Friday, so let's skip. On May 29, we'll have Matt Hastings tell us about his adiabatic oracle result <https://arxiv.org/abs/2005.03791>. On June 5, we'll have Jeff Schenker tell us about his paper with Ramis on ergodic quantum channels <https://arxiv.org/abs/2004.14397>. I'll write closer to the date with zoom links. aram _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

3 years, 11 months

[Aspuru-Guzik Group List] [qip] congratulations Ike!

by Aram Harrow

"the Kobe Bryant of quantum computing and ion devices" https://www.youtube.com/watch?v=ieUOv1sQPlw _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

3 years, 11 months

[Aspuru-Guzik Group List] [qip] QI group meeting talk tomorrow - Matt Hastings on adiabatic speedups

by Aram Harrow

Dear quanta, At 11am (EST) tomorrow, Matt Hastings will tell us about his recent oracle quasipolynomial speedup for stoquastic gapped adiabatic evolution. <https://arxiv.org/abs/2005.03791> https://mit.zoom.us/j/97943342302 -aram _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

3 years, 11 months

[Aspuru-Guzik Group List] [qip] Fwd: Aaronson seminar tomorrow

by Aram Harrow

---------- Forwarded message --------- From: Arthur Jaffe <arthurjaffe(a)me.com> Date: Sun, May 24, 2020, 21:43 Subject: Aaronson seminar To: Arthur Jaffe <arthurjaffe(a)me.com> Join by Zoom at *https://harvard.zoom.us/j/779283357 <https://urldefense.proofpoint.com/v2/url?u=https-3A__harvard.zoom.us_j_7792…>* _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

3 years, 11 months

[Aspuru-Guzik Group List] [qip] group meeting talk tomorrow

by Aram Harrow

Dear quanta, Tomorrow at 11 we will hear Cole tell us about his recent paper with Michael Walter, Minimal length in an orbit closure as a semiclassical limit <https://arxiv.org/abs/2004.14872>, which, among other things, will shed light on quantum state tomography. https://mit.zoom.us/j/97943342302 On May 29 we will have Matt Hastings tell us about his recent adiabatic paper. -aram _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

3 years, 11 months

[Aspuru-Guzik Group List] [qip] Fwd: [Outside Talk]: CMSA Colloquium: Mikhail Lukin (Harvard) @ 4:30 PM, ZOOM

by Aram Harrow

relevant talk this afternoon ---------- Forwarded message --------- From: Ryan Higgins <higginsr(a)mit.edu> Date: Wed, May 13, 2020 at 2:17 PM Subject: [Outside Talk]: CMSA Colloquium: Mikhail Lukin (Harvard) @ 4:30 PM, ZOOM To: Please note that this is Harvard’s zoom talk. *Speaker*: Mikhail Lukin (Harvard) *Time*: May 13, Wednesday, 16:30-17:30 (4:30pm EST) *Location*: Online via Zoom (https://harvard.zoom.us/j/952543678) *Title*: Exploring New Frontiers of Quantum Science with Programmable Atom Arrays *Abstract*: We will discuss recent work at a new scientific interface between many-body physics and quantum information science. Specifically, we will describe the advances involving programmable, coherent manipulation of quantum many-body systems using atom arrays excited into Rydberg states. Within this system we performed quantum simulations of one dimensional spin models, discovered a new type of non-equilibrium quantum dynamics associated with the so-called many body scars and created large-scale entangled states. We will also describe the most recent developments that now allow the control over 200 atoms in two-dimensional arrays. Ongoing efforts to study exotic many-body phenomena and to realize and test quantum optimization algorithms within such systems will be discussed. For security reasons, you will have to show your full name to join the meeting. _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

3 years, 11 months

[Aspuru-Guzik Group List] [qip] Friday meeting

by Aram Harrow

Dear quanta, On Friday, we'll have a talk by Lincoln Carr on his paper with Nicole and others: "Entangled quantum cellular automata, physical complexity, and Goldilocks rules <https://arxiv.org/abs/2005.01763>." We'll meet at 11 at this link. https://mit.zoom.us/j/97943342302 -aram _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

3 years, 12 months

[Aspuru-Guzik Group List] [qip] talk on Friday

by Aram Harrow

Dear quanta, This Friday at 11am we will have Eric tell us about his recent work. Please everyone also think about any updates you want to mention for the group, and if you want to be a future speaker or want to nominate someone. Here are the meeting link and talk details. https://mit.zoom.us/j/95376219117 Title: Quantum Correlations Can Enhance Generative Modeling Abstract: In the past few decades, the field of machine learning has grown substantially and has achieved remarkable success. In addition, quantum systems can produce complicated probability distributions which are hard to capture with classical generative models—thus, the field of quantum machine learning has recently emerged and is expected to facilitate, in particular, unsupervised learning. However, the origin of the quantum advantage in the expressivity of quantum machine learning models, although supported by evidence from computational complexity theory, still remains unclear. Motivated by this, we consider a particular minimal quantum extension of Bayesian networks, and prove directly that the presence of quantum nonlocality and contextuality in this model give rise to a quantum advantage over the underlying Bayesian network. We also give a numerical demonstration of a separation between the models on standard machine learning data sets. _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

4 years

[Aspuru-Guzik Group List] [qip] Yichen talk on Friday at 11am

by Aram Harrow

Dear quanta, We will "meet" this Friday at 11am to hear Yichen talk about some of his recent work. The invite link is here: https://mit.zoom.us/j/328681454 The link is open without a password so when you join please identify yourself and (if not MIT) your institution. If anyone wants to speak in some future week, please let me know. Here are the talk details. Title: Quantum dynamics at late times: scrambling, thermalization, and temporal correlations Subtitle: with applications to the instability of translation-invariant localization and no-go theorems for quantum time crystals Abstract: Please refer to the abstracts of the two papers below. References: https://arxiv.org/abs/1907.13392 (joint with Aram W. Harrow), https://arxiv.org/abs/1912.01210 -aram _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

4 years, 1 month

[Aspuru-Guzik Group List] Special Seminar: Monday 3/23 @1:15pm - Anand Natarajan (Caltech)

by Ploucha, Clare

Anand Natarajan (Quantum Information Theory Search) “Interactive proofs and quantum entanglement” Monday, March 23, 2020 1:15 – 2:15pm VIRTUAL TALK - Click here to join talk: https://harvard.zoom.us/j/219078028 This talk will be held via Zoom and we hope you will be able to participate remotely! The public Zoom link can be used to sign into the live talk from your office, home, etc. Please note that these talks will be recorded. Please also review the below guidelines for accessing and participating in the Zoom talk. Topic: Anand Natarajan - Faculty Candidate Time: Mar 23, 2020 01:00 PM Eastern Time (US and Canada) Join Zoom meeting https://harvard.zoom.us/j/219078028 Join by telephone (use any number to dial in) +1 312 626 6799 +1 929 436 2866 +1 253 215 8782 +1 301 715 8592 +1 346 248 7799 +1 669 900 6833 International numbers available: https://harvard.zoom.us/u/acfXWMMcSC One tap mobile: +13126266799,,219078028# US (Chicago) Join by SIP conference room system Meeting ID: 219 078 028 219078028(a)zoomcrc.com<mailto:219078028@zoomcrc.com> Ahead of the talk time, please: * Download Zoom<https://harvard.service-now.com/ithelp?id=kb_article&sys_id=5d3094cedbfa370…> and test your log-in. * Log in and join the meeting<https://harvard.zoom.us/j/680480385> on time. * Make sure your video is turned off. * Use headphones so as not to distract others with whom you share a space. * You should be muted, but please check this upon entering. * At any time during the talk, typed comments or questions can be directed to the moderator via Zoom’s chat function<https://support.zoom.us/hc/en-us/articles/203650445-In-Meeting-Chat>. Messages sent this way will only be visible to the moderator (and facilitator) and will be addressed as opportunity allows. * At the end of the talk, there will be a question period. Use the “raise your hand” feature to enter the question queue, and wait for a prompt to unmute your microphone. The moderator will select questions from the queue of “raised hands” as time allows. Title: Interactive proofs and quantum entanglement Abstract: Interactive proof systems are a classic idea in theoretical computer science, and have led to fundamental advances in complexity theory (hardness of approximation and the PCP theorem) and cryptography. Remarkably, in quantum information, interactive proof systems with multiple provers have become an important tool for studying quantum entanglement, extending the pioneering work of Bell in the 1960s. In this talk I will discuss recent progress in characterizing the power of the complexity class MIP* of such proof systems where the provers share entanglement. In addition to revealing an area of quantum complexity theory that is strikingly different from its classical counterpart, this work has led to new schemes for delegating quantum computations to untrusted servers, as well as to consequences for Tsirelson’s problem in mathematic physics, and the Connes embedding problem in operator algebras. At the heart of this work are new protocols that use classical PCP techniques together with the rules of quantum mechanics to let a classical client precisely control an untrusted quantum server.

4 years, 1 month

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