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arXiv · 1701.08986

Hyper-entanglement of photons emitted by a quantum dot

Maximilian Prilmüller·Tobias Huber·Markus Müller·Peter Michler·Gregor Weihs·Ana Predojević
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Abstract

Entanglement is a unique quantum mechanical attribute and a fundamental resource of quantum technologies. Entanglement can be achieved in various individual degrees of freedom, nonetheless some systems are able to create simultaneous entanglement in multiple degrees of freedom - hyper-entanglement. A hyper-entangled state of light represents a valuable tool capable of reducing the experimental requirements and resource overheads and it can improve the success rate of quantum information protocols. Here, we report on demonstration of polarization and time-bin hyper-entangled photons emitted from a single quantum dot. We achieved this result by applying resonant and coherent excitation on a quantum dot system with marginal fine structure splitting. Our results yield fidelities to the maximally entangled state of 0.81(6) and 0.87(4) in polarization and time-bin, respectively.

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Maximilian Prilmüller, Tobias Huber, Markus Müller, Peter Michler, Gregor Weihs, Ana Predojević. 2017-01-31. Hyper-entanglement of photons emitted by a quantum dot. https://doi.org/10.1103/physrevlett.121.110503

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