Bounding the Amount of Entanglement from Witness Operators
(2024) In Physical Review Letters 132(11).- Abstract
We present an approach to estimate the operational distinguishability between an entangled state and any separable state directly from measuring an entanglement witness. We show that this estimation also implies bounds on a variety of other well-known entanglement quantifiers. This approach for entanglement estimation is then extended to both the measurement-device-independent scenario and the fully device-independent scenario, where we obtain nontrivial but suboptimal bounds. The procedure requires no numerical optimization and is easy to compute. It offers ways for experimenters to not only detect, but also quantify, entanglement from the standard entanglement witness procedure.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/876e058b-c1b6-42f2-ad01-be4562f9ffff
- author
- Sun, Liang Liang ; Zhou, Xiang ; Tavakoli, Armin LU ; Xu, Zhen Peng and Yu, Sixia
- organization
- publishing date
- 2024-03-15
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 132
- issue
- 11
- article number
- 110204
- publisher
- American Physical Society
- external identifiers
-
- pmid:38563922
- scopus:85187556288
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.132.110204
- language
- English
- LU publication?
- yes
- id
- 876e058b-c1b6-42f2-ad01-be4562f9ffff
- date added to LUP
- 2024-04-03 13:28:54
- date last changed
- 2024-04-19 15:40:40
@article{876e058b-c1b6-42f2-ad01-be4562f9ffff, abstract = {{<p>We present an approach to estimate the operational distinguishability between an entangled state and any separable state directly from measuring an entanglement witness. We show that this estimation also implies bounds on a variety of other well-known entanglement quantifiers. This approach for entanglement estimation is then extended to both the measurement-device-independent scenario and the fully device-independent scenario, where we obtain nontrivial but suboptimal bounds. The procedure requires no numerical optimization and is easy to compute. It offers ways for experimenters to not only detect, but also quantify, entanglement from the standard entanglement witness procedure.</p>}}, author = {{Sun, Liang Liang and Zhou, Xiang and Tavakoli, Armin and Xu, Zhen Peng and Yu, Sixia}}, issn = {{0031-9007}}, language = {{eng}}, month = {{03}}, number = {{11}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Bounding the Amount of Entanglement from Witness Operators}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.132.110204}}, doi = {{10.1103/PhysRevLett.132.110204}}, volume = {{132}}, year = {{2024}}, }