Anastassiou, Luke, Ralph, Jason F 
ORCID: 0000-0002-4946-9948, Maskell, Simon ORCID: 0000-0003-1917-2913 and Kok, Pieter
(2023)
Bayesian estimation for Bell state rotations.
AVS Quantum Science, 5 (2).
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Bell_State_Gyro.pdf - Author Accepted Manuscript Download (3MB) | Preview |
Abstract
<jats:p>This paper explores the effect of three-dimensional rotations on two-qubit Bell states and proposes a Bayesian method for the estimation of the parameters of the rotation. We use a particle filter to estimate the parameters of the rotation from a sequence of Bell state measurements, and we demonstrate that the resultant improvement over the optimal single qubit case approaches the 2 factor that is consistent with the Heisenberg limit. We also demonstrate how the accuracy of the estimation method is a function of the purity of mixed states.</jats:p>
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science and Engineering > School of Electrical Engineering, Electronics and Computer Science |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 03 May 2023 07:44 |
| Last Modified: | 03 May 2023 07:44 |
| DOI: | 10.1116/5.0147878 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3170106 |
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