Circuit quantum electrodynamics (cQED) with modular quasi-lumped models Article Swipe

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Zlatko Minev , Thomas McConkey , Maika Takita , Antonio Córcoles , Jay Gambetta ·

YOU? · · 2021 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2103.10344

Extracting the Hamiltonian of interacting quantum-information processing systems is a keystone problem in the realization of complex phenomena and large-scale quantum computers. The remarkable growth of the field increasingly requires precise, widely-applicable, and modular methods that can model the quantum electrodynamics of the physical circuits, and even of their more-subtle renormalization effects. Here, we present a computationally-efficient method satisfying these criteria. The method partitions a quantum device into compact lumped or quasi-distributed cells. Each is first simulated individually. The composite system is then reduced and mapped to a set of simple subsystem building blocks and their pairwise interactions. The method operates within the quasi-lumped approximation and, with no further approximation, systematically accounts for constraints, couplings, parameter renormalizations, and non-perturbative loading effects. We experimentally validate the method on large-scale, state-of-the-art superconducting quantum processors. We find that the full method improves the experimental agreement by a factor of two over taking standard coupling approximations when tested on the most sensitive and dressed Hamiltonian parameters of the measured devices.

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Hamiltonian (control theory) Circuit quantum electrodynamics Modular design Renormalization Quantum Realization (probability) Physics Pairwise comparison Statistical physics Quantum simulator Quantum mechanics Theoretical physics Quantum computer Computer science Mathematics Mathematical optimization Operating system Statistics Artificial intelligence

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2103.10344
PDF: https://arxiv.org/pdf/2103.10344
OA Status: green
Cited By: 21
Related Works: 10
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DOI: https://doi.org/10.48550/arxiv.2103.10344

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Title: Circuit quantum electrodynamics (cQED) with modular quasi-lumped models

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Language: en

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Publication year: 2021

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Publication date: 2021-03-18

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Authors: Zlatko Minev, Thomas McConkey, Maika Takita, Antonio Córcoles, Jay Gambetta

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Landing page: https://arxiv.org/abs/2103.10344

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Concepts: Hamiltonian (control theory), Circuit quantum electrodynamics, Modular design, Renormalization, Quantum, Realization (probability), Physics, Pairwise comparison, Statistical physics, Quantum simulator, Quantum mechanics, Theoretical physics, Quantum computer, Computer science, Mathematics, Mathematical optimization, Operating system, Statistics, Artificial intelligence

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Cited by: 21

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abstract_inverted_index.approximations	151
abstract_inverted_index.experimentally	122
abstract_inverted_index.systematically	110
abstract_inverted_index.electrodynamics	40
abstract_inverted_index.renormalization	50
abstract_inverted_index.superconducting	129
abstract_inverted_index.non-perturbative	118
abstract_inverted_index.state-of-the-art	128
abstract_inverted_index.quasi-distributed	71
abstract_inverted_index.renormalizations,	116
abstract_inverted_index.widely-applicable,	31
abstract_inverted_index.quantum-information	5
abstract_inverted_index.computationally-efficient	56
cited_by_percentile_year
countries_distinct_count	0
institutions_distinct_count	5
citation_normalized_percentile