PRL: Genuine High-Dimensional Quantum Steering

Theory and experiment coming together to demonstrate genuine high-dimensional quantum steering.

Our new paper “Genuine High-Dimensional Quantum Steering” has been published in Physical Review Letters. Collaborating along with the Quantum Information Theory Group at the University of Geneva, we formulated simple two-setting steering inequalities, the violation of which certifies a lower bound on the dimension of entanglement in a one-sided device-independent setting.

We experimentally certified 15-dimensional steering in dimension d = 31. It is the highest dimension of entanglement ever certified in a one-sided device-independent setting, which unlocks the potential of high-dimensional entanglement in several applications such as semi-device-independent quantum information protocols. More generally, this represents an important step towards the realization of noise-robust, high-capacity quantum networks in the near future.

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