aspuru-list August 2019

aspuru-list@lists.fas.harvard.edu

2 participants
5 discussions

[Aspuru-Guzik Group List] FW: quantum school in Jerusalem in December

by Ploucha, Clare

Dear all, Please see below for information about a winter school<http://ias.huji.ac.il/SchoolCSE4> that may be of interest to the HQI community. The application deadline is September 15, 2019. Best, Clare -- Clare Ploucha Director of Programs Harvard Quantum Initiative 17 Oxford Street, Jefferson 357 Cambridge, MA 02138 P: 617-495-3388 From: Boaz Barak <b(a)boazbarak.org> Date: Thursday, August 29, 2019 at 10:10 PM To: "Ploucha, Clare" <cploucha(a)fas.harvard.edu> Subject: Fwd: quantum school in Jerusalem in December Hi Clare, This winter school http://ias.huji.ac.il/SchoolCSE4<https://urldefense.proofpoint.com/v2/url?u=http-3A__ias.huji.ac.il_SchoolCS…> can be of interest to HQI students Boaz

4 years, 7 months

[Aspuru-Guzik Group List] TODAY, 11:00am - HQI Special Seminar - Yonglong Xie

by Ploucha, Clare

Harvard Quantum Initiative Special Seminar Friday, August 30 11:00 AM Jefferson 356 Yonglong Xie (Princeton) Spectroscopic signatures of many-body correlations in magic-angle twisted bilayer graphene The discovery of superconducting and insulating states in magic-angle twisted bilayer graphene (MATBG) [1,2] has ignited considerable interest in understanding the nature of electronic interactions in this chemically pristine material. The transport properties of MATBG as a function of doping are similar to those of high-transition-temperature copper oxides and other unconventional superconductors [1-3], which suggests that MATBG may be a highly interacting system. However, there is no direct experimental evidence of strong many-body correlations in MATBG. In this talk, I will present the unusual spectroscopic characteristics found on MATBG, obtained using a scanning tunneling microscope, and describe how these correlated features allow us to establish a more concrete connection between MATBG and high-Tc cuprates beyond the phenomenological resemblance of their transport phase diagrams [4]. Finally, I will discuss the possibility of symmetry-broken ground states in MATBG and the prospects of probing these states using novel quantum transport and scanning probe techniques. 1. Cao,Y et al. Nature 556, 80–84 (2018). 2. Cao,Y et al. Nature 556, 43–50 (2018). 3. Lee, P. A. et al. Rev. Mod. Phys. 78, 17 (2006). 4. Xie, Y et al. Nature 572, 101-105 (2019). Clare Ploucha Director of Programs Harvard Quantum Initiative 17 Oxford Street, Jefferson 357 Cambridge, MA 02138 P: 617-495-3388

4 years, 7 months

[Aspuru-Guzik Group List] Aug. 30, 11:00am - HQI Special Seminar - Yonglong Xie

by Ploucha, Clare

Harvard Quantum Initiative Special Seminar Friday, August 30 11:00 AM Jefferson 356 Yonglong Xie (Princeton) Spectroscopic signatures of many-body correlations in magic-angle twisted bilayer graphene The discovery of superconducting and insulating states in magic-angle twisted bilayer graphene (MATBG) [1,2] has ignited considerable interest in understanding the nature of electronic interactions in this chemically pristine material. The transport properties of MATBG as a function of doping are similar to those of high-transition-temperature copper oxides and other unconventional superconductors [1-3], which suggests that MATBG may be a highly interacting system. However, there is no direct experimental evidence of strong many-body correlations in MATBG. In this talk, I will present the unusual spectroscopic characteristics found on MATBG, obtained using a scanning tunneling microscope, and describe how these correlated features allow us to establish a more concrete connection between MATBG and high-Tc cuprates beyond the phenomenological resemblance of their transport phase diagrams [4]. Finally, I will discuss the possibility of symmetry-broken ground states in MATBG and the prospects of probing these states using novel quantum transport and scanning probe techniques. 1. Cao,Y et al. Nature 556, 80–84 (2018). 2. Cao,Y et al. Nature 556, 43–50 (2018). 3. Lee, P. A. et al. Rev. Mod. Phys. 78, 17 (2006). 4. Xie, Y et al. Nature 572, 101-105 (2019). -- Clare Ploucha Director of Programs Harvard Quantum Initiative 17 Oxford Street, Jefferson 357 Cambridge, MA 02138 P: 617-495-3388

4 years, 8 months

[Aspuru-Guzik Group List] Group meeting August 15

by Riley Hickman

Hello all, Mario will speak at the group meeting today. He will talk about the new representation SELFIES (see the arxiv link below for abstract). We will meet in SS571 at 2:30pm. Please be on time. If you would like to join the meeting via Skype, let me know. Best, Riley ------------------------------------------------------------------ https://arxiv.org/abs/1905.13741 [1905.13741] SELFIES: a robust representation of semantically constrained graphs with an example application in chemistry - arxiv.org<https://arxiv.org/abs/1905.13741> arxiv.org Abstract: Graphs are ideal representations of complex, relational information. Their applications span diverse areas of science and engineering, such as Feynman diagrams in fundamental physics, the structures of molecules in chemistry or transport systems in urban planning.

4 years, 8 months

[Aspuru-Guzik Group List] Group Meeting August 8

by Riley Hickman

Hi all, Matthias will speak at the group meeting tomorrow. His title and abstract can be found below. We will meet in SS571 at 2:30. Please be on time. If you would like to join the meeting via Skype, let me know. Best, Riley ---------------------------------------------------------------- Title: An Artificial Spiking Quantum Neuron Abstract: One of the goals in quantum machine learning is to establish an analog to classical neural networks. Several groups have put forward proposals for quantum neurons. This work is different from these proposals in the fact that it incorporates a temporal character in the firing of the neuron. This makes it behave similar to spiking neurons from neuromorphic approaches to machine learning. The temporal character is achieved by implementing the neurons as small spin chains with a driving interaction with the output qubit. Besides quantum neural nets, this neuron has potential in quantum communication as a state comparator. To demonstrate this, we show the capability of this neuron to distinguish between Bell pairs.

4 years, 8 months

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aspuru-list August 2019