Berlin 2018 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 99: Poster Session: Transport

TT 99.20: Poster

Donnerstag, 15. März 2018, 15:00–19:00, Poster B

Quantum correlation between two oscillators generated by non-local electron transport — •Felicitas Hellbach, Wolfgang Belzig, Fabian Pauly, and Gianluca Rastelli — Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany

Since the realization of high quality superconducting microwave cavities one can envisage the possibility to investigate the coherent interaction of light and matter. We study two parallel quantum dots arranged in the geometry of an Aharonov-Bohm interferometer (ABI) with each dot linearly coupled to a local harmonic oscillator. We explore how quantum correlation and entanglement between the two oscillators is generated by the coherent transport of a single electron traveling in two different paths of the ABI. We calculate the covariance by use of a diagrammatic perturbative expansion (Keldysh Green's functions) to the fourth order in the dot-oscillator coupling constant, taking into account vertex corrections.