Jebarathinam, Chellasamy;
Das, Debarshi;
Srikanth, R;
(2023)
Asymmetric one-sided semi-device-independent steerability of quantum discordant states.
Physical Review A: Atomic, Molecular and Optical Physics
, 108
(4)
, Article 042211. 10.1103/PhysRevA.108.042211.
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Abstract
Superlocality and superunsteerability provide operational characterization of quantum correlations in certain local and unsteerable states, respectively. Such quantum correlated states have a nonzero quantum discord. A two-way nonzero quantum discord is necessary for quantum correlations pointed out by superlocality. On the other hand, in this work, we demonstrate that a two-way nonzero quantum discord is not necessary to demonstrate superunsteerability. To this end, we demonstrate superunsteerability for one-way quantum discordant states. This in turn implies the existence of one-way superunsteerability and also the presence of superunsteerability without superlocality. Superunsteerability for nonzero quantum discord states implies the occurrence of steerability in a one-sided semi-device-independent way. Just like one-way steerability occurs for certain Bell-local states in a one-sided device-independent way, our result shows that one-way steerability can also occur for certain nonsuperlocal states but in a one-sided semi-device-independent way.
| Type: | Article |
|---|---|
| Title: | Asymmetric one-sided semi-device-independent steerability of quantum discordant states |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.108.042211 |
| Publisher version: | http://dx.doi.org/10.1103/physreva.108.042211 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher's terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10193050 |
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