STATPHYS ML の皆様，
早大理工 の 湯浅一哉 と申します．
直前で恐縮ですが，早稲田大学で開催しますセミナーのご案内を
投稿させて頂きます．
皆様のご参加を歓迎致します．
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Speaker: Prof. Daniel BURGARTH (Aberystwyth University, UK)
Date: January 15 Monday 13:30-15:00
Room: 55N-2F Departments of Physics and Applied Physics Conference Room
Nishi-Waseda Campus, Waseda University
(早稲田大学 西早稲田キャンパス 55号館N棟2階 応物物理会議室)
Title: In Situ Upgrade of Quantum Simulators to Universal Computers
Web: http://www.f.waseda.jp/yuasa/Burgarth201801.html
Abstract:
Quantum simulators, machines that can replicate the dynamics of quantum
systems, are being built as useful devices and are seen as a stepping
stone to universal quantum computers. A key difference between the two
is the ability to perform the logic gates that make up computational
algorithms. We propose a method for learning how to construct these
gates efficiently by using the simulator to perform optimal control on
itself. This bypasses two major problems of purely classical approaches:
the need to have an accurate model of the system, and a classical
computer more powerful than the quantum one to carry out the
optimisation. For numerical simulations of up to 9 qubits with Ising
interactions, this in situ approach scales polynomially in the number of
qubits for different topologies suggesting that this is a practical way
of upgrading quantum simulators to computers.
Reference:
B. Dive, A. Pitchford, F. Mintert, and D. Burgarth
arXiv:1701.01723 [quant-ph] ( http://arxiv.org/abs/1701.01723 )
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湯浅一哉
--
Kazuya YUASA
Department of Physics
Waseda University
Okubo 3-4-1-55N-03-06A, Shinjuku-ku
Tokyo 169-8555, Japan
TEL & FAX: +81-3-5286-3237
Email: yuasa@waseda.jp
Web: http://www.f.waseda.jp/yuasa/