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Title: Quantum teleportation and entanglement swapping of electron spins in superconducting hybrid structures

We present schemes for quantum teleportation and entanglement swapping of electronic spin states in hybrid superconductor–normal-metal systems. The proposed schemes employ subgap transport whereby the lowest order processes involve Cooper pair-electron and double Cooper-pair cotunneling in quantum teleportation and entanglement swapping protocols, respectively. The competition between elastic cotunneling and Cooper-pair splitting results in the success probability of 25% in both cases. Described implementations of these protocols are within reach of present-day experimental techniques.
Authors:
Publication Date:
OSTI Identifier:
22451178
Resource Type:
Journal Article
Resource Relation:
Journal Name: Annals of Physics; Journal Volume: 357; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COOPER PAIRS; ELECTRONS; PROBABILITY; QUANTUM ENTANGLEMENT; QUANTUM TELEPORTATION; SPIN; SUPERCONDUCTORS