Rydberg crystals as quantum simulators

Servaas Kokkelmans, QuSoft, Amsterdam, Netherlands, April 2016

Van neutronenster naar quantum computer

Servaas Kokkelmans, Dream & Dare festival, TU/e, Eindhoven, April 2016

Strong interactions at different ranges

Servaas Kokkelmans, Utrecht University, Netherlands, April 2016

Sub-Poissonian Statistics and Patterned Excitation of Rydberg Atoms

Jaron Sanders, Rick van Bijnen, Matthieu Jonckheere, Edgar Vredenbregt, Servaas Kokkelmans, Poster, Bose-Einstein Condensation 2015, Sant Feliu de Guixols, Spain, Sept 2015

The European quantum technologies flagship programme - Special Issue in Quantum Science and Technology


A recently published article on the Quantum Science and Technology tackles the topic of the European Quantum Technologies Flagship Programme

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RySQ startup meeting, Aarhus, Denmark

Servaas Kokkelmans (TUE) talk: Optically imprinted Rydberg lattices

A Coherent Quantum Annealer with Rydberg Atoms


A. W. Glaetzle, R. M. W. van Bijnen, P. Zoller, W. Lechner


Nat. Commun. 8, 15813 (2017)

There is a significant ongoing effort in realizing quantum annealing with different physical platforms. The challenge is to achieve a fully programmable quantum device featuring coherent adiabatic quantum dynamics. Here we show that combining the well-developed quantum simulation toolbox for Rydberg atoms with the recently proposed Lechner-Hauke-Zoller~(LHZ) architecture allows one to build a prototype for a coherent adiabatic quantum computer with all-to-all Ising interactions and, therefore, a novel platform for quantum annealing.

Optimal control of Rydberg lattice gases


Jian Cui, Rick van Bijnen, Thomas Pohl, Simone Montangero, Tommaso Calarco


Quantum Sci. Technol. 2, 35006 (2017)

We present optimal control protocols to prepare different many-body quantum states of Rydberg atoms in optical lattices. Specifically, we show how to prepare highly ordered many-body ground states, GHZ states as well as some superposition of symmetric excitation number Fock states, that inherit the translational symmetry from the Hamiltonian, within sufficiently short excitation times minimizing detrimental decoherence effects.

Characterizing the local vectorial electric field near an atom chip using Rydberg-state spectroscopy


N. Cisternas, Julius de Hond, G. Lochead, R.J.C. Spreeuw, H.B. van Linden van den Heuvell, N.J. van Druten


PHYSICAL REVIEW A 96, 013425 (2017)

We use the sensitive response to electric fields of Rydberg atoms to characterize all three vector components of the local electric field close to an atom-chip surface. We measured Stark-Zeeman maps of S and D Rydberg states using an elongated cloud of ultracold Rubidium atoms (T ~2.5 µK) trapped magnetically 100 µm from the chip surface. The spectroscopy of S states yields a calibration for the generated local electric field at the position of the atoms.

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