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EntangleNet: Theoretical Reestablishment of Entanglement in Quantum Networks

Computer Science and Engineering Department, Faculty of Automatic Control and Computers, University Politehnica of Bucharest, 060042 Bucharest, Romania
*
Author to whom correspondence should be addressed.
To Octavian Stănășilă on his 80th birthday.
These authors contributed equally to this work.
Appl. Sci. 2018, 8(10), 1935; https://doi.org/10.3390/app8101935
Received: 6 September 2018 / Revised: 4 October 2018 / Accepted: 14 October 2018 / Published: 16 October 2018
(This article belongs to the Section Quantum Science and Technology)
In the practical context of quantum networks, the most reliable method of transmitting quantum information is via teleportation because quantum states are highly sensitive. However, teleportation consumes a shared maximally entangled state. Two parties Alice and Bob located at separate nodes that wish to reestablish their shared entanglement will not send entangled qubits directly to achieve this goal, but rather employ a more efficient mechanism that ensures minimal time resources. In this paper, we present a quantum routing scheme that exploits entanglement swapping to reestablish consumed entanglement. It improves and generalizes previous work on the subject and reduces the entanglement distribution time by a factor of 4 k in an arbitrary scale quantum network, where N = 4 k - 1 is a required number of quantum nodes located between source and destination. In addition, k is the greatest positive integer considered by Alice or Bob, such that afterwards they choose N quantum switches. View Full-Text
Keywords: quantum teleportation; quantum network; quantum routing; entanglement swapping quantum teleportation; quantum network; quantum routing; entanglement swapping
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Mina, M.-Z.; Popescu, P.G. EntangleNet: Theoretical Reestablishment of Entanglement in Quantum Networks . Appl. Sci. 2018, 8, 1935.

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