Quantum Ising Hamiltonian Programming in Trio, Quartet, and Sextet Qubit Systems

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Rydberg-atom quantum simulators are of keen interest because of their possibilities towards high-dimensional qubit architectures. Here we report continuous tuning of quantum Ising Hamiltonians of Rydberg atoms in three-dimensional arrangements. Various connected graphs of Rydberg atoms constructed with vertices and edges respectively representing atoms and Rydberg-blockaded atom pairs, and their eigenenergies are probed along with their geometric intermediates during structural transformations. Conformation spectra of star, complete, cyclic, and diamond graphs are probed for four interacting atoms and antiprism structures for six atoms. The energy level shifts and merges of the tested structural transformations are clearly observed with Fourier-transform spectroscopy, in good agreement with the model few-body quantum Ising Hamiltonian. This result demonstrates the possibility of continuous geometry tuning and thus programming of many-body spin-Hamiltonian systems.
Publisher
AMER PHYSICAL SOC
Issue Date
2020-12
Language
English
Article Type
Article
Citation

PRX QUANTUM, v.1, no.2

ISSN
2691-3399
DOI
10.1103/PRXQuantum.1.020323
URI
http://hdl.handle.net/10203/287401
Appears in Collection
PH-Journal Papers(저널논문)
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