aspuru-list July 2019

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[Aspuru-Guzik Group List] No group meeting Aug 1

by Riley Hickman

Hi all, There will be no group meeting tomorrow. Enjoy the rest of your week. Best, Riley

4 years, 8 months

[Aspuru-Guzik Group List] [qip] Fwd: Announcing "Assessing Performance of Quantum Computers" (APQC) workshop; Sep. 25-27, 2019

by Aram Harrow

---------- Forwarded message --------- From: Sandia Quantum Performance Lab <qpl(a)sandia.gov> Date: Mon, Jul 22, 2019 at 8:00 AM Subject: Announcing "Assessing Performance of Quantum Computers" (APQC) workshop; Sep. 25-27, 2019 To: Blume-Kohout, Robin J <rjblume(a)sandia.gov> Dear Colleague, I am writing to enthusiastically announce the first (hopefully annual) workshop on *Assessing Performance of Quantum Computers <https://qpl.sandia.gov/APQC/index.html>* (APQC). APQC will be a 3-day workshop, held on September 25-27, 2019, at the Ridgeline Hotel in Estes Park, Colorado. The workshop will focus on approaches, techniques, and theories for assessing the quality and performance of quantum computational hardware. The goal of APQC is to bring together experts in all the fields that are essential to performance assessment – including QCVV, quantum algorithms, quantum supremacy, error correction, and experimental quantum hardware – to stimulate advances in the emerging field of quantum performance assessment. The main focus of APQC is expected to be the performance of digital (gate- or circuit-model) quantum computing devices, but connections to other architectures and models, including annealing and analog, are welcome. We invite all interested participants to apply to participate and submit a contributed talk (if desired) – at < https://qpl.sandia.gov/APQC/APQC_registration.html>. Space and funding restrictions will limit participation to at most 70 participants. Applications received by August 16, 2019 will be guaranteed full consideration, and further applications received until September 8 *may* be considered if space permits. There will be a $250/person registration fee for accepted applicants. A discounted lodging rate at the Ridgeline Hotel *and* most meals will be provided. Confirmed invited speakers include: - Sergio Boixo (Google) - Joseph Emerson (Quantum Benchmark / U. Waterloo) - Steve Flammia (U. Sydney) - David McKay (IBM) - Adriaan Rol (T.U. Delft) - Kevin Young (Sandia) We expect the program to include approximately 16 contributed talks, in addition to ~8 invited talks. For more information, see < https://qpl.sandia.gov/APQC/index.html>. APQC is being organized by Sandia’s Quantum Performance Lab (QPL) <https://qpl.sandia.gov/>, and the University of New Mexico’s Center for Quantum Information and Quantum Control (CQUIC) <https://cquic.unm.edu/>, with support from the National Science Foundation. I would be very grateful if you would share this announcement with interested colleagues (including students and postdocs!), and forward it to anyone you believe would be interested. Sincerely, Robin Blume-Kohout (on behalf of the Quantum Performance Lab) _______________________________________________ qip mailing list qip(a)mit.edu http://mailman.mit.edu/mailman/listinfo/qip

4 years, 9 months

[Aspuru-Guzik Group List] Today, 2:00pm - HQI Special Seminar - Leigh Martin

by Ploucha, Clare

Harvard Quantum Initiative Special Seminar Thursday, July 18 2:00 PM Jefferson 356 Leigh Martin (UC Berkeley) Quantum feedback for measurement and control Many fundamental quantum limits arise from the inevitable disturbance caused by measurement. This disturbance imposes a barrier to precision measurement with no classical analog, but also provides a uniquely quantum mechanism for control. This talk explores both of these aspects in the context of quantum feedback. First, we discuss experimental results showing how feedback can take a measurement of phase to its fundamental limit. By continuously and adaptively changing measurement basis during readout of a single-photon signal, we enhance sensitivity over existing techniques and implement a canonical phase measurement. Second, we present theoretical methods for state control based on measurement back-action. We apply these methods to the task of entanglement generation and propose potential future experiments, including some that should be extremely robust to loss.

4 years, 9 months

[Aspuru-Guzik Group List] July 18, 2:00pm - HQI Special Seminar - Leigh Martin

by Ploucha, Clare

4 years, 9 months

[Aspuru-Guzik Group List] No Group Meeting July 18

by Riley Hickman

Hi all, There will no group meeting tomorrow. Best regards, Riley

4 years, 9 months

[Aspuru-Guzik Group List] Today, 2:00pm - HQI Special Seminar - Matthew Nichols

by Ploucha, Clare

Harvard Quantum Initiative Special Seminar Wednesday, July 17 2:00 PM Jefferson 250 Matthew Nichols (MIT) Probing the 2D Fermi-Hubbard Model Under a Quantum Gas Microscope Ultracold fermionic atoms in optical lattices offer a pristine platform for quantum simulation of materials with strong electron correlations. With the advent of quantum gas microscopy, we now have the abilities to observe and manipulate these systems at the level of single atoms and lattice sites. In this talk, I will describe how we perform microscopy on fermionic 40K, and how we realize the two-dimensional Fermi-Hubbard model, a paradigm believed to capture the essence of high-Tc superconductivity in the cuprates. I will then discuss some experiments we performed using this system, including a measurement of the spin conductivity of a homogeneous Mott insulator at half-filling, a quantity which is difficult to measure in the cuprates, and highly challenging to calculate theoretically. For strong interactions, we observed diffusive spin transport driven by super-exchange and doublon-hole assisted tunneling. Extending the technique developed for this measurement to finite doping could shed light on the complex interplay between spin and charge in the Hubbard model. -- Clare Ploucha Director of Programs Harvard Quantum Initiative 17 Oxford Street, Jefferson 357 Cambridge, MA 02138 P: 617-495-3388

4 years, 9 months

[Aspuru-Guzik Group List] July 17, 2:00pm - HQI Special Seminar - Matthew Nichols

by Ploucha, Clare

4 years, 9 months

[Aspuru-Guzik Group List] Group meeting July 11

by Riley Hickman

Hi all, Pascal will speak at the group meeting tomorrow. His title and abstract can be found below. We will meet in SS571 at 2:30pm. If you'd like to connect to the call via Skype, please let me know. Thanks, Riley Title: Machine learning of reaction barriers, genetic algorithms and chemical intuition Abstract: This talk will give an overview of our (Gabe, Akshat, me and others) recent work on the prediction of activation energies of chemical reactions, the design of phosphine ligands, genetic algorithms based on our recently developed SELFIES representation of molecules and a combination of all to extract chemical intuition and design rules from machine learning approaches.

4 years, 9 months

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aspuru-list July 2019