cmp-mlの皆様
5月31日(金) 16:00より、物性研究所 理論セミナーをハイブリッド形式で
開催致します。”自動微分によるハミルトニアンの自動設計”に関して、
物性研究所 乾幸地 先生にお話し頂きます。
Zoomでの参加をご希望の方は下記リンク先にて事前登録をお願い致します。
講演の詳細は以下をご確認下さい。
皆様のご参加を歓迎致します。
尾崎泰助
東京大学物性研究所
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Dear Colleagues,
The following Theory Seminar will be held. (On Zoom and Seminar Room 5,
Hybrid）
You are very welcome to attend.
(If you would like to participate online, please make a registration through
the link below in advance.）
URL: https://forms.gle/6yXpY7JzwP1yZUHb9
==========================
Date : Friday, May 31st, 2024 4:00 pm – 5:00 pm Place : On Zoom and Seminar
Room 5 (A615), ISSP（Hybrid）
Speaker: Koji Inui (ISSP, the Univ. of Tokyo)
Title: Inverse Hamiltonian design of highly-entangled quantum systems
Abstract：
Solving inverse problems to identify Hamiltonians with desired properties
holds promise for the discovery of fundamental principles. In quantum
systems, quantum entanglement plays a pivotal role in not only
characterizing the quantum nature but also developing quantum technology
like quantum computing. Nonetheless, the design principles of the quantum
entanglement are yet to be clarified.
In this talk, I will present an inverse design framework using automatic
differentiation in quantum spin systems, aiming to construct Hamiltonians
with large quantum entanglement. I will show that the method automatically
finds the Kitaev model with bond-dependent anisotropic interactions, whose
ground state is a quantum spin liquid, on both honeycomb and square-octagon
lattices. On triangular and maple-leaf lattices with geometrical
frustration, it generates numerous solutions with spatially inhomogeneous
interactions rather than converging to a specific model, but it still helps
to construct unprecedented models.
The comparative study reveals that bond-dependent anisotropic
interactions, rather than isotropic Heisenberg interactions, amplify quantum
entanglement, even in systems with geometrical frustration. The present
study paves the way for the automatic design of new quantum systems with
desired quantum nature and functionality.
Please also refer to the following URL:
www.issp.u-tokyo.ac.jp/maincontents/seminar/all2.html?pid=23083&ptyp
e=seminar
www.issp.u-tokyo.ac.jp/maincontents/seminar/all2_en.html?pid=23083&p
type=seminar
Contact: Taisuke Ozaki
e-mail: t-ozaki@issp.u-tokyo.ac.jp
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