Kok, Pieter, Dunningham, Jacob and Ralph, Jason F (2017) The role of entanglement in calibrating optical quantum gyroscopes. Physical Review A, 95 (1). a2326. ISSN 1050-2947
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Abstract
We consider the calibration of an optical quantum gyroscope by modeling two Sagnac interferometers, mounted approximately at right angles to each other. Reliable operation requires that we know the angle between the interferometers with high precision, and we show that a procedure akin to multi-position testing in inertial navigation systems can be generalized to the case of quantum interferometry. We find that while entanglement is a key resource within an individual Sagnac interferometer, its presence between the interferometers is a far more complicated story. The optimum level of entanglement depends strongly on the sought parameter values, and small but significant improvements may be gained from choosing states with the optimal amount of entanglement between the interferometers.
Item Type: | Article |
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Schools and Departments: | School of Mathematical and Physical Sciences > Physics and Astronomy |
Research Centres and Groups: | Atomic, Molecular and Optical Physics Research Group |
Subjects: | Q Science > QC Physics |
Depositing User: | Richard Chambers |
Date Deposited: | 19 Dec 2016 14:38 |
Last Modified: | 08 Jan 2018 15:49 |
URI: | http://srodev.sussex.ac.uk/id/eprint/65955 |
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📧 Request an updateProject Name | Sussex Project Number | Funder | Funder Ref |
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UK Quantum Technology Hub: NQIT-Networked Quantum Information Technologies | G1503 | EPSRC-ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL | EP/M013243/1 |