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arXiv · 1712.08569

Cavity-mediated coherent coupling between distant quantum dots

Giorgio Nicolí·Michael Sven Ferguson·Clemens Rössler·Alexander Wolfertz·Gianni Blatter·Thomas Ihn·Klaus Ensslin·Christian Reichl·Werner Wegscheider·Oded Zilberberg
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Abstract

Scalable architectures for quantum information technologies require to selectively couple long-distance qubits while suppressing environmental noise and cross-talk. In semiconductor materials, the coherent coupling of a single spin on a quantum dot to a cavity hosting fermionic modes offers a new solution to this technological challenge. Here, we demonstrate coherent coupling between two spatially separated quantum dots using an electronic cavity design that takes advantage of whispering-gallery modes in a two-dimensional electron gas. The cavity-mediated long-distance coupling effectively minimizes undesirable direct cross-talk between the dots and defines a scalable architecture for all-electronic semiconductor-based quantum information processing.

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Giorgio Nicolí, Michael Sven Ferguson, Clemens Rössler, Alexander Wolfertz, Gianni Blatter, Thomas Ihn, Klaus Ensslin, Christian Reichl, Werner Wegscheider, Oded Zilberberg. 2017-12-22. Cavity-mediated coherent coupling between distant quantum dots. https://doi.org/10.1103/physrevlett.120.236801

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