Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 41: Quantum Information: Concepts and Methods VI
Q 41.2: Vortrag
Donnerstag, 9. März 2017, 11:30–11:45, P 2
Robust creation of large entangled quantum states in Rydberg lattice system — •Maike Ostmann1,2, Jiri Minar1,2, and Igor Lesanovsky1,2 — 1School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom — 2Centre for the Mathematics and Theoretical Physics of Quantum Non-equilibrium Systems, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
Due to new experimental developments, the generation of quantum states in Rydberg lattice systems is of interest. Recently, there has been success in the realisation of a quantum simulator for an Ising model using Rydberg atoms [1]. This promising new platform is able to deal with one and two-dimensional arrays of arbitrary geometry. Furthermore, new procedures to prepare neutral atoms in optical lattices with unit filling fraction have been developed [2,3]. Consequently, the question arises whether it is possible to easily produce a quantum state, which can be used as a resource state in quantum simulators or quantum computation. A simple protocol, which makes use of the Rydberg blockade effect, is considered. Three laser pulses are applied to a one-dimensional chain of Rydberg atoms resulting in an entangled graph state. The effect of this protocol has been simulated, and the entanglement of the state is specified by calculating the concurrence depending on the interatomic separation. [1] H. Labuhn et al., arXiv:1509.04543 (2016) [2] D. Barredo et al., arXiv:1607.03042 (2016) [3] M. Endres et al., arXiv:1607.03044 (2016)