Quantum Optics without photons --- from basic effects to new quantum information architectures.

DIPC Seminars

Speaker

Martin Schuetz. MPQ Garching

When

2015/02/13
13:00

Place

Donostia International Physics Center (DIPC). Paseo Manuel de Lardizabal, 4, Donostia

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Traditionally, Quantum Optics is a field of research investigating light, matter and its interactions. In this talk, I will discuss several instances were methods and ideas from Quantum Optics find novel counterparts in solid- state nanostructures: (i) By identifying photons with electrons, and atoms with nuclear spins, we show that the build-up and reinforcement of correlations among nuclear spins can give rise to the new phenomenon of electronic superradiance in the leakage current through a single quantum dot [1]. (ii) Building upon the same analogy, we show how to entangle two nuclear spin ensembles in the steady state, without requiring any unitary gates [2,3]. (iii) By identifying the role of photons with phonons based on surface acoustic waves, in analogy to cavity QED we propose a versatile, on-chip quantum information architecture in piezo-active materials [4]. [1] M.J.A. Schuetz, E.M. Kessler, J.I. Cirac, and G. Giedke, Phys. Rev. B 86, 085322 (2012). [2] M.J.A. Schuetz, E.M. Kessler, L.M.K. Vandersypen, J.I. Cirac, and G. Giedke, Phys. Rev. Lett. 111, 246802 (2013). [3] M.J.A. Schuetz, E.M. Kessler, L.M.K. Vandersypen, J.I. Cirac, and G. Giedke, Phys. Rev. B 89, 195310 (2014). [4] M.J.A. Schuetz et al., in preparation.