November 2023 - Qse-grad-students

Fwd: Soliciting program representatives for HG-GSAS Student Council

by Sule, Nishant V.

Dear all, The QSE program has an unfilled position for the GSAS student council (see Julia’s email below). If any of you would like to represent the QSE program or want to hear more about what that entails, please don’t hesitate to reach out to Julia (cc’d). Best, Nishant Begin forwarded message: From: "Motzkin, Julia" <jbook(a)g.harvard.edu> Subject: Soliciting program representatives for HG-GSAS Student Council Date: November 29, 2023 at 5:42:23 PM EST To: Julia Motzkin <jbook(a)g.harvard.edu> Hello program administrators! I'm Julia Motzkin, Division Representative for the Natural Sciences 1 to the Harvard Griffin GSAS Student Council. As division rep, an important part of my job is soliciting feedback from program representatives on what the student council can be doing to better serve students in their programs. I'm contacting you because your program has either no current representatives, or fewer representatives than it is allotted. Would you be willing to reach out to students in your program who may be willing and interested in serving? Some information about program representatives, as well as the list of current reps, can be found here<https://engage.gsas.harvard.edu/news/284519>. To register a new program representative, please use this form<https://airtable.com/appVuj1UWHK8aEhEW/shrHgDTXRecTU09lp>. Additionally, you can let students know to feel free to contact me with any questions. Thank you so much for your help! Best, Julia -- Julia Book Motzkin PhD Candidate | Harvard University Department of Physics jbook(a)g.harvard.edu<mailto:jbook@g.harvard.edu> <mailto:krm29@uchicago.edu>

5 months, 1 week

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Special Quantum Information Seminar Nov 30: Nikolas Breuckmann

by Anshu, Anurag

Dear all, We are excited to have Nikolas Breuckmann from University of Bristol deliver our final Special Quantum Information Seminar on Thursday Nov 30, in Jefferson 250. The talk will be 3:00-4:00 pm, followed by a mentorship session with Nikolas from 4:00-4:30 pm. Note the timing change from the previous seminar. Title: Quantum Error Correction Abstract: Quantum devices are very fragile, and it is widely accepted that quantum computing will require some form of error correction to be possible. We will discuss some of the basics of quantum error correction and some recent trends in the field. We also touch upon applications of ideas from quantum error correction to other fields. Mentorship session - Aimed at students and early career researchers, the mentorship session will allow the audience to engage with Nikolas 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 fault tolerance 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. With Best Regards, Anurag Anshu

5 months, 1 week

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New HQI Staff Assistant - Claire Gallagher

by Ploucha, Clare

Dear HQI Community, I am pleased to announce that Claire Gallagher has joined the HQI as HQI Staff Assistant. Claire has been working with the HQI team for about a month and is quickly getting up to speed on the HQI and its community of students, postdocs, and faculty. Claire previously worked at the Harvard University Herbaria and Libraries as Staff Assistant and as an administrative support team member in Boylston Hall, so she comes to us with experience with Harvard operations. Replacing Ann Quaicoe, Claire’s portfolio includes support for all core HQI programs: the QSE PhD program, HQI Postdoctoral Fellowship, Quantum Colloquium and events, and post-baccalaureate and undergraduate research programs. She also processes HQI financial transactions (purchases and reimbursements), website updates, and supports other special projects as assigned. Claire can be reached at cgallagher(a)fas.harvard.edu<mailto:cgallagher@fas.harvard.edu>. As a reminder, the HQI offices are currently located on the third floor of Maxwell Dworkin. Please feel free to stop by with any questions for our staff, or just to say hi! * MD 347 – Director of Programs (Ploucha) * MD 349 – Director of Education & Outreach (Sule) * MD 351 – Staff Assistant (Gallagher) & Strategic Program Manager (Dakoulas) Best, Clare -- Clare Ploucha Director of Programs Harvard Quantum Initiative 33 Oxford Street, Maxwell Dworkin 347 Cambridge, MA 02138

5 months, 1 week

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Harvard Quantum Initiative: Quantum Colloquium – Andrew Daley. Nov. 29. 4pm

by Gallagher, Claire M.

You are cordially invited to: HQI Colloquium - Prof. Andrew Daley Wednesday, November 29, 2023 4:00 PM - 6:00 PM Jefferson 250 Andrew Daley, University of Oxford, Keble College Title: "Fast scrambling transitions in quantum simulators” Abstract: Whether discussing interacting many-body physics with cold atoms, quantum metrology, or quantum computing, there are important questions around how large an entangled many-body state we can usefully and reliably prepare in analogue quantum simulators subject to decoherence. Given that information spreading and entanglement growth are limited by Lieb-Robinson bounds, the useful system size will typically grow only linearly with the system size. However, for systems with long-range interactions (e.g., atoms in cavities) or movable tweezer arrays, we can engineer so-called fast scrambling many-body quantum systems, where information is spread and entanglement is built up on a timescale that grows logarithmically with the system size. I will give an overview of our recent work exploring these implementations of fast scrambling, in systems with sparse coupling models or effective hypercube geometries. We explore the requirements for fast scrambling, also identifying a dynamical transition marking the onset of scrambling in quantum circuits or tweezer arrays with different levels of long-range connectivity. In particular, we show that as a function of the interaction range for circuits of different structures, the tripartite mutual information exhibits a scaling collapse around a critical point between two clearly defined regimes of different dynamical behaviour. I will discuss how these transitions can be observed in neutral atom arrays, and give some perspectives for the realisation of useful entangled states using these dynamics. Student presentation at 4:00 PM Coffee break from 4:10-4:30 PM Guest Presentation will begin at 4:30 PM Claire M. Gallagher Staff Assistant III Harvard Quantum Initiative 33 Oxford Street, MD 351 Cambridge, MA 02138 P. (617) 496-2361

5 months, 1 week

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Save the date: HQI Quantum Fest - December 5-6, 2023

by Ploucha, Clare

Dear HQI Community, Please save the date for Quantum Fest, two days of talks by candidates for HQI’s Prize Postdoctoral Fellowship. The talks will be held Tuesday, December 5 and Wednesday December 6, with exact talk times, speakers, and locations forthcoming. Please direct any questions to HQIDirectors(a)harvard.edu<mailto:HQIDirectors@harvard.edu>. Thank you, Clare -- Clare Ploucha Director of Programs Harvard Quantum Initiative 33 Oxford Street, Maxwell Dworkin 347 Cambridge, MA 02138

5 months, 2 weeks

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[QMatter in Math/Physics 2023 Nov 22, Tue 4:00 - 5:30 pm] Guilherme Delfino Silva (Boston University) Modulated Gauge Theories and Fracton Behavior in 2D - Harvard CMSA G10

by Juven Wang

Quantum Matter in Mathematics and Physics (QMMP) 2023: https://cmsa.fas.harvard.edu/event_category/quantum-matter-seminar/ Happy Thanksgiving! [image: image.png] ----- This seminar will be in person! Time: Nov 22, Wed 4:00 - 5:30 pm ET Location: Harvard CMSA G10 Zoom: https://harvard.zoom.us/j/977347126 Password: cmsa ————————————————————————————————— Guilherme Delfino Silva (Boston University) Title: Modulated Gauge Theories and Fracton Behavior in 2D Abstract: In this talk we investigate deconfined phases of two-dimensional ZN lattice gauge theories associated to spatially modulated symmetries. In order to study the low-energy physics of such modulated gauge theories we propose and explore exactly solvable gapped Hamiltonians, which allow us to fully characterize their low-energy properties at zero temperature. We provide explicit examples and discuss how non-polynomial symmetries, as exponential symmetries, are powerful enough to fully constrain the mobility of isolated excitations. -------- Subscribe to Harvard CMSA Quantum Matter and other seminar videos (more to be uploaded): https://www.youtube.com/playlist?list=PL0NRmB0fnLJQAnYwkpt9PN2PBKx4rvdup Subscribe to Harvard CMSA seminar mailing list: https://forms.gle/1ewa7KeP6BxBuBeRA --- Harvard University CMSA, 20 Garden Street, Cambridge, MA 02138

5 months, 2 weeks

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Thanksgiving Dinner Invite

by Zhu, Yi

Hi y'all, I will be hosting a Thanksgiving dinner with some friends from QSE and physics. If you will be around for the holidays and are free Thursday evening, I would love for you to join! Please respond via email/Slack/a secure quantum channel for further details! Best, Yi

5 months, 2 weeks

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Clarification about TF requirement for the QSE program

by Sule, Nishant V.

Dear all, As you are considering serving as TF in the coming semesters, I wanted to clarify the policy and make sure everyone understands it. As stated in on the GSAS QSE policy page here<https://gsas.harvard.edu/policy/quantum-science-and-engineering>, the TF appointment needs to be for at least 15hrs per week, which equates to a minimum of a 3/8th-time position. I understand that this might not have been clear to everyone and I do apologize for any misunderstanding/miscommunication. The language below has always been the official policy, but it might not have been as easy to look up. For those who has already served as TF, but have had a 1/4th-time appointment, it is possible to meet the requirement with an additional 1/4th-time appointment. For those who are looking to serve as TF, please make sure your appointment meets the requirement. SEAS TF appointments for instance only come in 1/4th-time increments, while Physics has 1/4th-time, 3/8th-time, as well as 1/2-time. Note also that the Physics and CCB TF requirement is 1/2-time while the SEAS TF requirement is 1/4th-time. I recognize that all these different requirements create confusion and we are working to standardize, but it is not clear when that would happen. If you have further questions or concern, please do not hesitate to come and talk to me. Best, Nishant Teaching In addition to research assistantships (RAs), teaching fellowships (TFs) are important sources of support for graduate students after their first year. Because of the importance of teaching skills for a successful quantum science and engineering career, a one-term TF is required of all graduate students, generally within the first three years of study. This teaching experience provides an opportunity for students to develop the communication skills that are vital for careers in academics and industry. To fulfill the teaching requirement, students must serve as a teaching fellow at least one fall or spring term for at least 15 hours per week (3/8-time). The TF position should involve a teaching component and not merely grading.

5 months, 3 weeks

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Special Quantum Information Seminar Oct 26 - Prof. Liang Jiang

by Anshu, Anurag

Dear all, 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 2:45-3:30 pm, followed by a mentorship session with Prof. Jiang 3:30-4:00 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

5 months, 3 weeks

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Upcoming Nanophotonics Seminar: Prof. Cheng Wang - 11/17/23

by Dakoulas, Samantha R

Nanophotonics Seminar Friday, November 17, 2023 | 04:00 pm | Maxwell Dworkin Room 119 Refreshments will be served at 03:30 pm Prof. Cheng Wang (PhD Harvard 2017) from City U. Hong Kong will give a seminar titled “Integrated lithium niobate microwave and millimeter-wave photonic circuits" THIS Friday at 4pm in MD 119. [cid:image001.png@01DA17E2.057AE9C0] Abstract: Integrated microwave photonics (MWP) is a powerful technology that leverages integrated photonic technologies for the generation, transmission, and manipulation of microwave signals in chip-scale optical systems. In this talk, I will discuss our recent efforts on developing a thin-film lithium niobate (LN) MWP platform that simultaneously features efficient, linear, and high-speed electro-optic modulators for high-fidelity microwave-optic conversion, low-loss functional photonic networks that can be configured for a variety of signal processing tasks, as well as large-scale, low-cost manufacturability. I will first discuss a variety of device-level building blocks with unprecedented performances, including low-loss photonic waveguides and resonators (0.03 dB/cm), broadband electro-optic modulators covering the entire millimeter-wave band (up to 300 GHz), high-linearity modulators with SFDR of 120 dB∙Hz4/5, broadband power-efficient frequency comb sources, as well as ultra-compact inverse-designed photonic elements. Building upon this platform, we further demonstrate high-performance MWP system applications, including ultrahigh-speed analog signal processing, image edge detection, and in-situ optical vector analyzers. Bio: Dr. Cheng Wang is an Associate Professor of Electrical Engineering at City University of Hong Kong. He received his B.S. degree in Microelectronics from Tsinghua University in 2012, and his S.M. (2015) and Ph.D. (2017) degrees, both in Electrical Engineering from Harvard University, supervised by Prof. Marko Lončar. After conducting research as a postdoctoral fellow at Harvard, he joined City University of Hong Kong as an Assistant Professor in 2018. Prof. Wang's research focuses on the design and nanofabrication technology of integrated photonic devices and circuits. His current research effort focuses on realizing integrated lithium niobate photonic circuits for applications in optical communications, millimeter-wave/terahertz technologies, nonlinear optics, and quantum photonics. Since joining CityU, Prof. Wang has received a number of awards in research, including the NSFC Excellent Young Scientist Fund (HK & Macau) (2019), the Croucher Innovation Award (2020), The President's Award, CityU (2020), and 35 Innovators Under 35 (China), MIT Technology Review (2021).

5 months, 3 weeks

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Qse-grad-students November 2023