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Large-scale simulations of Floquet physics on near-term quantum computers

Eckstein, Timo
•
Mansuroglu, Refik
•
Czarnik, Piotr
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September 13, 2024
Npj Quantum Information

Periodically driven quantum systems exhibit a diverse set of phenomena but are more challenging to simulate than their equilibrium counterparts. Here, we introduce the Quantum High-Frequency Floquet Simulation (QHiFFS) algorithm as a method to simulate fast-driven quantum systems on quantum hardware. Central to QHiFFS is the concept of a kick operator which transforms the system into a basis where the dynamics is governed by a time-independent effective Hamiltonian. This allows prior methods for time-independent simulation to be lifted to simulate Floquet systems. We use the periodically driven biaxial next-nearest neighbor Ising (BNNNI) model, a natural test bed for quantum frustrated magnetism and criticality, as a case study to illustrate our algorithm. We implemented a 20-qubit simulation of the driven two-dimensional BNNNI model on Quantinuum's trapped ion quantum computer. Our error analysis shows that QHiFFS exhibits not only a cubic advantage in driving frequency omega but also a linear advantage in simulation time t compared to Trotterization.

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10.1038_s41534-024-00866-1.pdf

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Main Document

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Published version

Access type

openaccess

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CC BY

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1.64 MB

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Adobe PDF

Checksum (MD5)

300e19ef84910709b1c6b42038cec97c

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