Parker, R. C., Joo, J. and Spiller, T. P. orcid.org/0000-0003-1083-2604 (2020) Photonic Hybrid State Entanglement Swapping using Cat State Superpositions. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. ISSN 1364-5021
Abstract
We propose the use of hybrid entanglement in an entanglement swapping protocol, as means of distributing a Bell state with high fidelity to two parties, Alice and Bob. The hybrid entanglement used in this work is described as a discrete variable (Fock state) and a continuous variable (cat state superposition) entangled state. We model equal and unequal levels of photonic loss between the two propagating continuous variable modes, before detecting these states via a projective vacuum-one-photon measurement, and the other mode via balanced homodyne detection. We investigate homodyne measurement imperfections, and the associated success probability of the measurement schemes chosen in this protocol. We show that our entanglement swapping scheme is resilient to low levels of photonic losses, as well as low levels of averaged unequal losses between the two propagating modes, and show an improvement in this loss resilience over other hybrid entanglement schemes using coherent state superpositions as the propagating modes. Finally, we conclude that our protocol is suitable for potential quantum networking applications which require two nodes to share entanglement separated over a distance of 5-10 km when used with a suitable entanglement purification scheme.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2021 The Authors |
Keywords: | quant-ph |
Dates: |
|
Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Funding Information: | Funder Grant number EPSRC UNSPECIFIED |
Depositing User: | Pure (York) |
Date Deposited: | 10 Nov 2020 17:00 |
Last Modified: | 06 Feb 2025 00:09 |
Published Version: | https://doi.org/10.1098/rspa.2020.0237 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1098/rspa.2020.0237 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:167797 |
Downloads
Filename: Photonic_Hybrid_State_Entanglement_Swapping_using_Cat_State_Superpositions_FinalREVISED.pdf
Description: Photonic Hybrid State Entanglement Swapping using Cat State Superpositions_FinalREVISED
Filename: rspa.2020.0237.pdf
Description: Photonic hybrid state entanglement swapping using cat state superpositions
Licence: CC-BY 2.5