Non-adiabatic quantum state preparation and quantum state transport in chains of Rydberg atoms

Ostmann, Maike and Minář, Jiří and Marcuzzi, Matteo and Levi, Emanuele and Lesanovsky, Igor (2017) Non-adiabatic quantum state preparation and quantum state transport in chains of Rydberg atoms. New Journal of Physics, 19 (12). p. 123015. ISSN 1367-2630

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Motivated by recent progress in the experimental manipulation of cold atoms in optical lattices, we study three different protocols for non-adiabatic quantum state preparation and state transport in chains of Rydberg atoms. The protocols we discuss are based on the blockade mechanism between atoms which, when excited to a Rydberg state, interact through a van der Waals potential, and rely on single-site addressing. Specifically, we discuss protocols for efficient creation of an antiferromagnetic GHZ state, a class of matrix product states including a so-called Rydberg crystal and for the state transport of a single-qubit quantum state between two ends of a chain of atoms. We identify system parameters allowing for the operation of the protocols on timescales shorter than the lifetime of the Rydberg states while yielding high fidelity output states. We discuss the effect of positional disorder on the resulting states and comment on limitations due to other sources of noise such as radiative decay of the Rydberg states. The proposed protocols provide a testbed for benchmarking the performance of quantum information processing platforms based on Rydberg atoms.

Item Type: Article
Keywords: quantum information, Rydberg gases, matrix product states, spin chains
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: 10.1088/1367-2630/aa983e
Depositing User: Eprints, Support
Date Deposited: 12 Dec 2017 15:02
Last Modified: 13 Dec 2017 05:40

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