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Kaufmann, H.; Ruster, T.; Schmiegelow, C.T.; Luda, M.A.; Kaushal, V.; Schulz, J.; Von Lindenfels, D.; Schmidt-Kaler, F.; Poschinger, U.G. "Scalable Creation of Long-Lived Multipartite Entanglement" (2017) Physical Review Letters. 119(15)
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Abstract:

We demonstrate the deterministic generation of multipartite entanglement based on scalable methods. Four qubits are encoded in Ca+40, stored in a microstructured segmented Paul trap. These qubits are sequentially entangled by laser-driven pairwise gate operations. Between these, the qubit register is dynamically reconfigured via ion shuttling operations, where ion crystals are separated and merged, and ions are moved in and out of a fixed laser interaction zone. A sequence consisting of three pairwise entangling gates yields a four-ion Greenberger-Horne-Zeilinger state |ψ=(1/2)(|0000+|1111), and full quantum state tomography reveals a state fidelity of 94.4(3)%. We analyze the decoherence of this state and employ dynamic decoupling on the spatially distributed constituents to maintain 69(5)% coherence at a storage time of 1.1 sec. © 2017 American Physical Society.

Registro:

Documento: Artículo
Título:Scalable Creation of Long-Lived Multipartite Entanglement
Autor:Kaufmann, H.; Ruster, T.; Schmiegelow, C.T.; Luda, M.A.; Kaushal, V.; Schulz, J.; Von Lindenfels, D.; Schmidt-Kaler, F.; Poschinger, U.G.
Filiación:Institut für Physik, Universität Mainz, Staudingerweg 7, Mainz, 55128, Germany
LIAF - Laboratorio de Iones y Atomos Frios, Departamento de Fisica, Instituto de Fisica de Buenos Aires, Buenos Aires, 1428, Argentina
DEILAP, CITEDEF, CONICET, J.B. de La Salle 4397, Villa Martelli, Buenos Aires, 1603, Argentina
Palabras clave:Electron energy analyzers; Ions; Quantum computers; Quantum entanglement; Quantum optics; Scalability; Dynamic decoupling; Gate operation; Greenberger-Horne-Zeilinger state; Laser interaction; Multipartite entanglements; Quantum state tomography; Scalable methods; Storage time; Quantum theory
Año:2017
Volumen:119
Número:15
DOI: http://dx.doi.org/10.1103/PhysRevLett.119.150503
Título revista:Physical Review Letters
Título revista abreviado:Phys Rev Lett
ISSN:00319007
CODEN:PRLTA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v119_n15_p_Kaufmann

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Citas:

---------- APA ----------
Kaufmann, H., Ruster, T., Schmiegelow, C.T., Luda, M.A., Kaushal, V., Schulz, J., Von Lindenfels, D.,..., Poschinger, U.G. (2017) . Scalable Creation of Long-Lived Multipartite Entanglement. Physical Review Letters, 119(15).
http://dx.doi.org/10.1103/PhysRevLett.119.150503
---------- CHICAGO ----------
Kaufmann, H., Ruster, T., Schmiegelow, C.T., Luda, M.A., Kaushal, V., Schulz, J., et al. "Scalable Creation of Long-Lived Multipartite Entanglement" . Physical Review Letters 119, no. 15 (2017).
http://dx.doi.org/10.1103/PhysRevLett.119.150503
---------- MLA ----------
Kaufmann, H., Ruster, T., Schmiegelow, C.T., Luda, M.A., Kaushal, V., Schulz, J., et al. "Scalable Creation of Long-Lived Multipartite Entanglement" . Physical Review Letters, vol. 119, no. 15, 2017.
http://dx.doi.org/10.1103/PhysRevLett.119.150503
---------- VANCOUVER ----------
Kaufmann, H., Ruster, T., Schmiegelow, C.T., Luda, M.A., Kaushal, V., Schulz, J., et al. Scalable Creation of Long-Lived Multipartite Entanglement. Phys Rev Lett. 2017;119(15).
http://dx.doi.org/10.1103/PhysRevLett.119.150503