Hamburg 2009 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 58: Quanteninformation: Atome und Ionen III
Q 58.4: Vortrag
Freitag, 6. März 2009, 11:15–11:30, VMP 6 HS-A
Simulation of an Acoustic Black Holes on an Ion Ring — •Birger Horstmann1, Benni Reznik2, Diego Porras1, and Ignacio Cirac1 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany — 2Department of Physics and Astronomy, Tel Aviv University, Ramat Aviv 69978, Israel
In this talk we present results on the simulation of acoustic black holes on an ion ring. Ion rings, which have already been realized experimentally, represent ion chains with periodic boundary conditions. If the ions are rotating with a stationary and inhomogeneous velocity profile, regions can appear, where the ion velocity exceeds the group velocity of the phonons. In these regions phonons are trapped like photons in black holes.
Exploiting this analogy known for hydrodynamic systems, we give evidence for the prediction of the thermal distribution of Hawking radiation and present a realistic experimental scenario to measure Hawking radiation. Thus, we propose for the first time an experiment to detect Hawking radiation in a discrete analogue of space time with a nonlinear dispersion relation.