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@ Nature Communications: Reversion of heat flow using quantum correlations

June 5, 2019

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@PRL Experimental Estimate of a Classicality Witness via a Single Measurement

June 19, 2016

The perception that quantum correlations can still appear in separable states has opened exciting new possibilities regarding their use as a resource in quantum information science. Quantifying such quantum correlations involves the complete knowledge of the system’s state and numerical optimization procedures. Thus, it is natural to seek methods involving fewer measurements that indicate the nature of the correlations in a system. Here we propose a classicality witness that can be accurately estimated via statistics from a single measurement and perform an experiment to explore the utility of this witness for quantum states with different types of correlations.

For more information: Phys. Rev. Lett. 108, 063601 (2012)

See also the NMR implementation of the witness in:Phys. Rev. Lett. 107, 070501 (2011) | arXiv |

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