A Rydberg quantum simulator

By H. Weimer, M. Muller, Igor Lesanovsky, Peter Zoller, H. P. Buchler. 2009

742 citations recorded by the source corpus.

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. Building on recent experimental advances in controlling individual Rydberg atoms, theoretical work proposes a ‘Rydberg quantum simulator’. Such a system would be suitable for efficiently simulating other quantum systems with many-body interactions and strongly correlated ground states.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/dd063265f68dcb5bc223c75de2d7888b0326103f

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

Quantum simulation of antiferromagnetic spin chains in an optical lattice (2011, methodology): “Using the mean of the two resonances, we obtain the interaction energy U 5 430(20) Hz at 16Er longitudinal lattice, 45Er transverse lattice (corresponding to U 5 413(19) Hz at 14Er longitudinal lattice, where the experiment operates, which agrees with a band-structure calculation of 401(25) Hz).”
Experimental investigations of dipole–dipole interactions between a few Rydberg atoms (2016, background): “Rydberg atoms are attractive candidates for the realization of quantum simulators [26].”
Topology by dissipation in atomic quantum wires (2011, background): “Dissipation and topological order has been studied recently in the context of Rydberg quantum simulator”
Experimental multiparticle entanglement dynamics induced by decoherence (2010, background): “Recent quantum-computing, state-engineering and simulation paradigms driven by dissipative or decohering environment”
Prediction of Toric Code Topological Order from Rydberg Blockade (2020, background): “[56] Hendrik Weimer, Markus MQüller, Igor Lesanovsky, Peter Zoller, and Hans Peter Büchler, “A rydberg quantum simulator,” Nature Physics 6, 382–388 (2010).”
Keldysh field theory for driven open quantum systems (2015, background): “[56] Hendrik Weimer, Markus Müller, Igor Lesanovsky, Peter Zoller, and Hans Peter Büchler, “A Rydberg quantum simulator,” Nat.”