Bloch oscillations in a lossy lattice

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• Eva Maria Graefe (Imperial)
• Wednesday 20 March 2019, 13:00-14:00
• Physics East 217.

If you have a question about this talk, please contact Dr Giovanni Barontini.

A tight-binding lattice with losses from every other lattice site is considered, that could be realised in a number of experimental setups, including cold atoms in optical lattices with particle losses or arrays of optical wave guides. In the absence of losses, if a static tilt is applied to the lattice the continuous dispersion relation is replaced by a discrete spectrum, the so-called Wannier ladder, with equidistant level spacings that lead to periodic dynamics with Bloch frequency. In particular, an initially broad wave packet will perform the famous Bloch oscillations, effectively mapping out the band structure of the untilted system. The presence of losses leads to a number of intriguing changes in this picture, which will be explored in this talk.

This talk is part of the Cold atoms series.

This talk is included in these lists:

• Cold atoms
• Physics East 217

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