| Issue |
EPL
Volume 128, Number 3, November 2019
|
|
|---|---|---|
| Article Number | 30005 | |
| Number of page(s) | 7 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/128/30005 | |
| Published online | 21 January 2020 | |
Multiparty quantum random access codes
1 Institute of Theoretical Physics and Astrophysics, National Quantum Information Center, Faculty of Mathematics, Physics and Informatics - 80-308, Gdansk, Poland
2 Center for Theoretical Physics, Polish Academy of Sciences - Al. Lotników 32/46, 02-668 Warsaw, Poland
Received: 2 October 2019
Accepted: 19 November 2019
Random access code (RAC), a primitive for many information processing protocols, enables one party to encode a n-bit string into one bit of message such that another party can retrieve partial information of that string. We introduce the multiparty version of RAC in which the n-bit string is distributed among many parties. For this task, we consider two distinct quantum communication scenarios: one allows shared quantum entanglement among the parties with classical communication, and the other allows communication through a quantum channel. We present several multiparty quantum RAC protocols that outclass its classical counterpart in both the aforementioned scenarios.
PACS: 03.67.Hk – Quantum communication / 03.67.-a – Quantum information / 03.65.Ud – Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.)
© EPLA, 2020
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