Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session B70: Classical-Assisted Quantum Computation
11:30 AM–2:18 PM,
Monday, March 6, 2023
Room: Room 409
Sponsoring
Unit:
DQI
Chair: Yuxuan Zhang, The University of Texas at Austin
Abstract: B70.00004 : A variational quantum-classical ansatz to study quantum systems*
12:06 PM–12:18 PM
Presenter:
Stefano Barison
(Ecole Polytechnique Federale de Lausanne)
Authors:
Stefano Barison
(Ecole Polytechnique Federale de Lausanne)
Filippo Vicentini
(Ecole Polytechnique Federale de Lausanne)
Giuseppe Carleo
(EPFL)
However, given that quantum resources are still limited in size and coherence times, these demonstrations have focused on small molecular and spin systems.
To scale up to more complex applications, it is highly desirable to introduce novel approaches that combine quantum algorithms with classical computational methods and keep quantum resources under control.
In this talk we present our recent results on the simulation of quantum systems using a variational mixed quantum-classical ansatz.
We illustrate observables evaluation and analyze the cost in terms of quantum-classical computational time.
Finally, we show applications to different types of physical systems, such as spin chains and molecular electronic structures.
*This research was supported by the NCCR MARVEL, a National Centre of Competence in Research, funded by the Swiss National Science Foundation (grant number 205602).
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