Gupta, Shashank;
Das, Debarshi;
Majumdar, AS;
(2021)
Distillation of genuine tripartite Einstein-Podolsky-Rosen steering.
Physical Review A
, 104
(2)
, Article 022409. 10.1103/PhysRevA.104.022409.
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Abstract
We show that a perfectly genuine tripartite EPR steerable assemblage can be distilled from partially genuine tripartite EPR steerable assemblages. In particular, we consider two types of hybrid scenarios: one-sided device-independent (1SDI) scenario (where one observer is untrusted, and other two observers are trusted) and two-sided device-independent (2SDI) scenario (where two observers are untrusted, and one observer is trusted). In both the scenarios, we show distillation of perfectly genuine steerable assemblage of three-qubit Greenberger-Horne-Zeilinger (GHZ) states or three-qubit W states from many copies of initial partially genuine steerable assemblages of the corresponding states. In each of these cases, we demonstrate that at least one copy of a perfectly genuine steerable assemblage can be distilled with certainty from infinitely many copies of initial assemblages. In case of practical scenarios employing finite copies, we show that the efficiency of our distillation protocols reaches near perfect levels using only a few number of initial assemblages.
| Type: | Article |
|---|---|
| Title: | Distillation of genuine tripartite Einstein-Podolsky-Rosen steering |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.104.022409 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevA.104.022409 |
| 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. |
| Keywords: | Science & Technology, Physical Sciences, Optics, Physics, Atomic, Molecular & Chemical, Physics, BOUND ENTANGLEMENT, NONLOCALITY |
| 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.ucl.ac.uk/id/eprint/10165225 |
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