Experimental Demonstration of Robust Quantum Steering.
- Wollmann S Quantum Engineering Technology Labs, H. H. Wills Physics Laboratory and Department of Electrical and Electronic Engineering, University of Bristol, Bristol BS8 1FD, United Kingdom.
- Uola R Département de Physique Appliquée, Université de Genève, CH-1211 Genève, Switzerland.
- Costa ACS Department of Physics, Federal University of Paraná, 81531-980 Curitiba, PR, Brazil.
- 2020-07-24
Published in:
- Physical review letters. - 2020
English
We analyze and experimentally demonstrate quantum steering using criteria based on generalized entropies and criteria with minimal assumptions based on the so-called dimension-bounded steering. Further, we investigate and compare their robustness against experimental imperfections such as misalignment in the shared measurement reference frame. While entropy based criteria are robust against imperfections in state preparation, we demonstrate an advantage in dimension-bounded steering in the presence of measurement imprecision. As steering with such minimal assumptions is easier to reach than fully nonlocal correlations, and as our setting requires very little trust in the measurement devices, the results provide a candidate for the costly Bell tests while remaining highly device independent.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.125.020404
- PMID 32701336
- Persistent URL
- https://sonar.ch/global/documents/29371
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