@PRL Witnessing the quantumness of correlations in NMR systems
- rmserra
- Jun 18, 2016
- 1 min read
The quantification of quantum correlations (other than entanglement) usually entails labored numerical optimization procedures also demanding quantum state tomographic methods. Thus it is interesting to have a laboratory friendly witness for the nature of correlations. We report recently a direct experimental implementation of such a witness in a room temperature nuclear magnetic resonance (NMR) system. In our experiment the nature of correlations is revealed by performing only few local magnetization measurements.
For more information: Phys. Rev. Lett. 107, 070501 (2011) | arXiv |
See also the optical implementation of the witness in: Phys. Rev. Lett. 108, 063601 (2012)
Coverage in the popular media:
Agência FAPESP: Medida da discórdia quântica | The new wave of qubits
Ciência Hoje: A medida da discórdia
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