Jan 19 – 30, 2015
Ecole de Physique des Houches
Europe/Zurich timezone

Quasiparticle engineering and entanglement propagation in a quantum many-body system

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Ecole de Physique des Houches

Ecole de Physique des Houches



Ms Christine Maier (IQOQI Innsbruck)


The key to explaining and controlling a range of quantum phenomena is to study how information propagates around many-body systems. Quantum dynamics can be described by particle-like carriers of information that emerge in the collective behaviour of the underlying system, so called quasiparticles. These elementary excitations are predicted to distribute quantum information in a fashion determined by the underlying system’s interactions. On my poster I report on quasiparticle dynamics observed in a quantum many-body system of trapped atomic ions [1]. In detail I present the implementation of the Ising Hamiltonian and the performed experiments on the system: We investigated how entanglement is distributed by quasiparticles, as they trace out lightcone-like wavefronts, and observed the predicted non-local transport of information and breakdown of the light-cone picture. Furthermore we artificially constructed approximate Eigenstates of the system, to perform spectroscopy on low lying energy levels and observe signatures of quasiparticle interactions. [1] P. Jurcevic et al., Nature, 511, 202-205 (2014).

Primary author

Ms Christine Maier (IQOQI Innsbruck)


Mr Ben Lanyon (IQOQI Innsbruck) Mr Christian Roos (IQOQI Innsbruck) Mr Cornelius Hempel (IQOQI Innsbruck) Mr Petar Jurcevic (IQOQI Innsbruck) Mr Peter Zoller (IQOQI Innsbruck) Mr Philipp Hauke (IQOQI Innsbruck) Mr Rainer Blatt (IQOQI Innsbruck)

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