A Rydberg quantum simulator

authored by: Hendrik Weimer, Markus Müller, Igor Lesanovsky, Peter Zoller, Hans Peter Büchler
Abstract: A universal quantum simulator is a controlled quantum device that reproduces the dynamics of any other many-particle quantum system with short-range interactions. This dynamics can refer to both coherent Hamiltonian and dissipative open-system evolution. Here we propose that laser-excited Rydberg atoms in large-spacing optical or magnetic lattices provide an efficient implementation of a universal quantum simulator for spin models involving n-body interactions, including such of higher order. This would allow the simulation of Hamiltonians of exotic spin models involving n-particle constraints, such as the Kitaev toric code, colour code and lattice gauge theories with spin-liquid phases. In addition, our approach provides the ingredients for dissipative preparation of entangled states based on engineering n-particle reservoir couplings. The basic building blocks of our architecture are efficient and high-fidelity n-qubit entangling gates using auxiliary Rydberg atoms, including a possible dissipative time step through optical pumping. This enables mimicking the time evolution of the system by a sequence of fast, parallel and high-fidelity n-particle coherent and dissipative Rydberg gates.
External Organisation(s): University of Stuttgart
University of Innsbruck
University of Nottingham
Type: Article
Journal: Nature physics
Volume: 6
Pages: 382-388
No. of pages: 7
ISSN: 1745-2473
Publication date: 14.03.2010
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Physics and Astronomy
Electronic version(s): https://doi.org/10.1038/nphys1614 (Access: Unknown)

BibTeX

@article{446fc294734141c19934f8f90eef362d,
title = "A Rydberg quantum simulator",
abstract = "A universal quantum simulator is a controlled quantum device that reproduces the dynamics of any other many-particle quantum system with short-range interactions. This dynamics can refer to both coherent Hamiltonian and dissipative open-system evolution. Here we propose that laser-excited Rydberg atoms in large-spacing optical or magnetic lattices provide an efficient implementation of a universal quantum simulator for spin models involving n-body interactions, including such of higher order. This would allow the simulation of Hamiltonians of exotic spin models involving n-particle constraints, such as the Kitaev toric code, colour code and lattice gauge theories with spin-liquid phases. In addition, our approach provides the ingredients for dissipative preparation of entangled states based on engineering n-particle reservoir couplings. The basic building blocks of our architecture are efficient and high-fidelity n-qubit entangling gates using auxiliary Rydberg atoms, including a possible dissipative time step through optical pumping. This enables mimicking the time evolution of the system by a sequence of fast, parallel and high-fidelity n-particle coherent and dissipative Rydberg gates.",
author = "Hendrik Weimer and Markus M{\"u}ller and Igor Lesanovsky and Peter Zoller and B{\"u}chler, {Hans Peter}",
note = "Funding information: This work was supported by the Austrian Science Foundation (FWF), and by the Deutsche Forschungsgemeinschaft (DFG) through SFB/TRR 21.",
year = "2010",
month = mar,
day = "14",
doi = "10.1038/nphys1614",
language = "English",
volume = "6",
pages = "382--388",
journal = "Nature physics",
issn = "1745-2473",
publisher = "Nature Publishing Group",
number = "5",
}