Preparation of Entangled States through Hilbert Space Engineering.

Lin, Y; Gaebler, J P; Reiter, F; Tan, T R; Bowler, R; Wan, Y; Keith, A; Knill, E; Glancy, S; Coakley, K; Sørensen, A S; Leibfried, D; Wineland, D J

Lin, Y; Gaebler, J P; Reiter, F; Tan, T R; Bowler, R; Wan, Y; Keith, A; Knill, E; Glancy, S; Coakley, K; Sørensen, A S; Leibfried, D; Wineland, D J.

Afiliação

Lin Y; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Gaebler JP; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Reiter F; The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark.
Tan TR; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Bowler R; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Wan Y; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Keith A; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Knill E; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Glancy S; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Coakley K; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Sørensen AS; The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark.
Leibfried D; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Wineland DJ; National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.

Phys Rev Lett ; 117(14): 140502, 2016 Sep 30.

Article em En | MEDLINE | ID: mdl-27740826

ABSTRACT

ABSTRACT

We apply laser fields to trapped atomic ions to constrain the quantum dynamics from a simultaneously applied global microwave field to an initial product state and a target entangled state. This approach comes under what has become known in the literature as "quantum Zeno dynamics" and we use it to prepare entangled states of two and three ions. With two trapped ^{9}Be^{+} ions, we obtain Bell state fidelities up to 0.990_{-5}^{+2}; with three ions, a W-state fidelity of 0.910_{-7}^{+4} is obtained. Compared to other methods of producing entanglement in trapped ions, this procedure can be relatively insensitive to certain imperfections such as fluctuations in laser intensity.

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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Estados Unidos

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