Hi all, A gentle reminder that Liang’s talk is today (details below). Starting at 2:00 pm in Jefferson 250. Best, Anurag. Get Outlook for iOS<https://aka.ms/o0ukef> ________________________________ From: Anshu, Anurag &lt;anuraganshu(a)fas.harvard.edu&gt; Sent: Sunday, October 22, 2023 7:29 AM To: quantum-info-group(a)lists.fas.harvard.edu &lt;quantum-info-group(a)lists.fas.harvard.edu&gt;du>; harvard-quantum-initiative(a)lists.fas.harvard.edu &lt;harvard-quantum-initiative(a)lists.fas.harvard.edu&gt;du>; qip &lt;qip(a)mit.edu&gt; Cc: Liang Jiang &lt;liangjiang(a)uchicago.edu&gt;du>; Ahammed, Sumaira &lt;sahammed(a)seas.harvard.edu&gt; Subject: [Quantum-info-group] CORRECTION: Special Quantum Information Seminar Oct 26 - Prof. Liang Jiang Dear all, Please see the update below - the talk starts at 2 pm, instead of 2:45 pm. We are excited to have Prof. Liang Jiang from University of Chicago deliver our next Special Quantum Information Seminar on Thursday Oct 26. The talk will be 2:00-3:00 pm, followed by a mentorship session with Prof. Jiang 3:00-3:45 pm. Note the timing change from the previous seminar. Title: Co-Designed Quantum Error Correction Abstract: To effectively address practical imperfections while harnessing the power of quantum information processing, our goal is to design quantum error correction schemes that can not only suppress dominant errors specific to particular hardware but also meet the requirements of various applications. I will discuss the process of designing quantum error-correcting codes that can optimally suppress practically relevant errors, with examples of custom-designed quantum error correction schemes that can efficiently correct practically relevant errors in AMO and solid-state platforms. I will also explore quantum error-correcting codes designed for various applications in quantum computing, communication, and sensing. Mentorship session - Aimed at students and early career researchers, the mentorship session will allow the audience to engage with Prof. Jiang on questions related to career and research directions. The questions can range anywhere from ''Is research in quantum computing a good career choice?" to "How can I help with practical quantum error correction as a theorist?". These important questions usually come up in one-to-one conversations at the end of a seminar, but our goal here will be to openly discuss and benefit from them. Hope to see you all there, With Best Regards, Anurag Anshu

Dear all, A gentle reminder that Ewin’s talk will be today in Jefferson 250 from 3:00-3:45 pm, followed by a mentorship session with Ewin from 3:45-4:30 pm. Get Outlook for iOS<https://aka.ms/o0ukef> ________________________________ From: Anshu, Anurag &lt;anuraganshu(a)fas.harvard.edu&gt; Sent: Wednesday, November 8, 2023 10:04:30 PM To: quantum-info-group(a)lists.fas.harvard.edu &lt;quantum-info-group(a)lists.fas.harvard.edu&gt;du>; harvard-quantum-initiative(a)lists.fas.harvard.edu &lt;harvard-quantum-initiative(a)lists.fas.harvard.edu&gt;du>; qip &lt;qip(a)mit.edu&gt; Cc: ewin(a)berkeley.edu &lt;ewin(a)berkeley.edu&gt;du>; Ahammed, Sumaira &lt;sahammed(a)seas.harvard.edu&gt; Subject: Special Quantum Information Seminar Nov 16 - Ewin Tang Dear all, We are excited to have Ewin Tang from UC Berkeley deliver our next Special Quantum Information Seminar on Thursday Nov 16, in Jefferson 250. The talk will be 3:00-3:45 pm, followed by a mentorship session with Ewin from 3:45-4:30 pm. Note the timing change from the previous seminar. Title: Learning quantum Hamiltonians at any temperature in polynomial time Abstract: A quantum system of n interacting particles at thermal equilibrium can be described using a polynomial number of parameters, which correspond to the strengths of the forces between particles. A natural open question has been whether these parameters can be estimated efficiently by running experiments on the system. We resolve this question by giving the first polynomial-time algorithm for this task. This improves over prior work, which uses polynomially many samples from the system, but requires exponential time. In this talk, I will introduce the problem and describe some of the key ideas behind our algorithm. Joint work with Ainesh Bakshi, Allen Liu, and Ankur Moitra. Mentorship session - Aimed at students and early career researchers, the mentorship session will allow the audience to engage with Ewin on questions related to career and research directions. The questions can range anywhere from ''Is research in quantum computing a good career choice?" to "How can I contribute to quantum learning theory as an experimentalist?". These important questions usually come up in one-to-one conversations at the end of a seminar, but our goal here will be to openly discuss and benefit from them. Hope to see you all there, With Best Regards, Anurag Anshu