Deterministic quantum teleportation with feed-forward in a solid state system

Steffen, L., Salathe, Y., Oppliger, M., Kurpiers, P., Baur, M., Lang, C., Eichler, C., Puebla-Hellmann, G., Fedorov, A. and Wallraff, A. (2013) Deterministic quantum teleportation with feed-forward in a solid state system. Nature, 500 7462: 319-322. doi:10.1038/nature12422

Author Steffen, L.
Salathe, Y.
Oppliger, M.
Kurpiers, P.
Baur, M.
Lang, C.
Eichler, C.
Puebla-Hellmann, G.
Fedorov, A.
Wallraff, A.
Title Deterministic quantum teleportation with feed-forward in a solid state system
Journal name Nature   Check publisher's open access policy
ISSN 0028-0836
Publication date 2013
Year available 2013
Sub-type Article (original research)
DOI 10.1038/nature12422
Open Access Status
Volume 500
Issue 7462
Start page 319
End page 322
Total pages 4
Place of publication London, nited Kingdom
Publisher Nature Publishing Group
Collection year 2014
Language eng
Subject 1000 General
Abstract Engineered macroscopic quantum systems based on superconducting electronic circuits are attractive for experimentally exploring diverse questions in quantum information science. At the current state of the art, quantum bits (qubits) are fabricated, initialized, controlled, read out and coupled to each other in simple circuits. This enables the realization of basic logic gates, the creation of complex entangled states and the demonstration of algorithms or error correction. Using different variants of low-noise parametric amplifiers, dispersive quantum non-demolition single-shot readout of single-qubit states with high fidelity has enabled continuous and discrete feedback control of single qubits. Here we realize full deterministic quantum teleportation with feed-forward in a chip-based superconducting circuit architecture. We use a set of two parametric amplifiers for both joint two-qubit and individual qubit single-shot readout, combined with flexible real-time digital electronics. Our device uses a crossed quantum bus technology that allows us to create complex networks with arbitrary connecting topology in a planar architecture. The deterministic teleportation process succeeds with order unit probability for any input state, as we prepare maximally entangled two-qubit states as a resource and distinguish all Bell states in a single two-qubit measurement with high efficiency and high fidelity. We teleport quantum states between two macroscopic systems separated by 6 mm at a rate of 10 4 s -1, exceeding other reported implementations. The low transmission loss of superconducting waveguides is likely to enable the range of this and other schemes to be extended to significantly larger distances, enabling tests of non-locality and the realization of elements for quantum communication at microwave frequencies. The demonstrated feed-forward may also find application in error correction schemes.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2014 Collection
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Created: Thu, 28 Nov 2013, 18:24:08 EST by System User on behalf of School of Mathematics & Physics