Resource requirements for efficient quantum communication using all-photonic graph states generated from a few matter qubits
| dc.contributor.author | Hilaire, Paul | en |
| dc.contributor.author | Barnes, Edwin Fleming | en |
| dc.contributor.author | Economou, Sophia E. | en |
| dc.contributor.department | Physics | en |
| dc.date.accessioned | 2021-05-18T12:24:39Z | en |
| dc.date.available | 2021-05-18T12:24:39Z | en |
| dc.date.issued | 2021-02-11 | en |
| dc.description.abstract | Quantum communication technologies show great promise for applications ranging from the secure transmission of secret messages to distributed quantum computing. Due to fiber losses, long-distance quantum communication requires the use of quantum repeaters, for which there exist quantum memory-based schemes and all-photonic schemes. While all-photonic approaches based on graph states generated from linear optics avoid coherence time issues associated with memories, they outperform repeater-less protocols only at the expense of a prohibitively large overhead in resources. Here, we consider using matter qubits to produce the photonic graph states and analyze in detail the trade-off between resources and performance, as characterized by the achievable secret key rate per matter qubit. We show that fast two-qubit entangling gates between matter qubits and high photon collection and detection efficiencies are the main ingredients needed for the all-photonic protocol to outperform both repeater-less and memory-based schemes. | en |
| dc.description.notes | We thank Yuan Zhan and Shuo Sun for their contribution in solving issues in the code. This research was supported by the NSF (Grant No. 1741656) and by the EU Horizon 2020 programme (GA 862035 QLUSTER). | en |
| dc.description.sponsorship | NSFNational Science Foundation (NSF) [1741656]; EU Horizon 2020 programme [GA 862035] | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | https://doi.org/10.22331/q-2021-02-15-397 | en |
| dc.identifier.issn | 2521-327X | en |
| dc.identifier.uri | http://hdl.handle.net/10919/103354 | en |
| dc.identifier.volume | 5 | en |
| dc.language.iso | en | en |
| dc.rights | Creative Commons Attribution 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en |
| dc.title | Resource requirements for efficient quantum communication using all-photonic graph states generated from a few matter qubits | en |
| dc.title.serial | Quantum | en |
| dc.type | Article - Refereed | en |
| dc.type.dcmitype | Text | en |
| dc.type.dcmitype | StillImage | en |
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