Coupling between Rydberg states and Landau levels of electrons trapped on liquid helium

Abstract

We investigate the coupling between Rydberg states of electrons trapped on a liquid Helium surface and Landau levels induced by a perpendicular magnetic field. We show that this realises a prototype quantum system equivalent to an atom in a cavity, where their coupling strength can be tuned by a parallel magnetic field. We determine experimentally the renormalisation of the atomic transition energies induced by the coupling to the cavity, which can be seen as an analogue of the Lamb shift. When the coupling is sufficiently strong the transition between the ground and first excited Rydberg states splits into two resonances corresponding to dressed states with vacuum and one photon in the cavity. Our results are in quantitative agreement with the energy shifts predicted by the effective atom in a cavity model where all parameters are known with high accuracy.

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• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Phonon induced Rabi frequency renormalization of optically driven single InGaAs/GaAs quantum dots
• Quantum-to-Classical Transition in Cavity Quantum Electrodynamics
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Cited by in corpus (3)

• Inverted harmonic oscillator dynamics of the nonequilibrium phase transition in the Dicke model
• Motional Quantum States of Surface Electrons on Liquid Helium in a Tilted Magnetic Field
• Temperature Damping of Magneto-Intersubband Resistance Oscillations in Magnetically Entangled Subbands