Volume 111, Number 4, August 2015
|Number of page(s)||4|
|Published online||02 September 2015|
Scalable Bell inequalities for multiqubit systems
1 College of Physics Science and Information Engineering, Hebei Normal University Shijiazhuang 050024, China
2 Department of Basic Curriculum, North China Institute of Science and Technology - Beijing 101601, China
3 College of Mathematics and Information Science, Hebei Normal University - Shijiazhuang 050024, China
Received: 12 May 2015
Accepted: 3 August 2015
Based on Clauser-Horne-Shimony-Holt inequality, we show a fruitful method to exploit Bell inequalities for multipartite qubit systems. These Bell inequalities are designed with a simpler architecture tailored to experimental demonstration. With the point of view of the stabilizer formalism, we suggest a method to investigate quantum nonlocality for multipartite systems. Under the optimal setting we derive a set of compact Mermin-type inequalities and then discuss quantum violations for generalized Greenberger-Horne-Zeilinger (GGHZ) states and two kinds of mixed states. Also, as an example, we reveal relationship between quantum nonlocality and four-partite entanglement for four-qubit GGHZ states.
PACS: 03.67.-a – Quantum information / 03.65.Ud – Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.)
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.