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Entangled Mechanical Oscillators*

John Jost, National Institute of Standards and Technology, Boulder

(Session 5 : Friday from 5:00-7:00)

Abstract. J. D. Jost, J. P. Home, J. M. Amini, D. Hanneke, R. Ozeri+, C. Langer**, J. J. Bollinger, D.Leibfried & D. J. Wineland Quantum entanglement has been the subject of considerable research, in part due to its non-intuitive nature and ubiquitous presence in QIP. For this reason, it is of interest to study entanglement in a variety of systems. We demonstrate deterministic entanglement in a system pervasive in nature: mechanical oscillators. Here, the mechanical oscillators are composed of the vibrations of two Be+ - Mg+ ion pairs in spatially separate locations. In addition, we show entanglement of a spin qubit with a spatially separated mechanical oscillator. These experiments demonstrate the creation of entangled states of a mixed species chain of four trapped ions, distribution of entanglement in an ion trap array, and sympathetic recooling of logical qubits. The techniques demonstrated in this experiment form core components for large-scale trapped-ion QIP. * supported by IARPA and the NIST Quantum Information Program +Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot, 76100, Israel **Lockheed Martin Littleton, CO, U.S.A.

Ion Motional Entanglement and Quantum Information Experiments at NIST*

John Jost, National Institute of Standards and Technology, Boulder

(Session 6 : Saturday from 9:15-10:45)

Abstract. I will summarize current trapped-ion quantum information processing (QIP) experiments at NIST. Quantum entanglement has been the subject of considerable research, in part due to its non intuitive nature and ubiquitous presence in QIP. For this reason it is of interest to study entanglement in a variety of systems. We demonstrate deterministic entanglement in a system pervasive in nature: mechanical oscillators. Here, the mechanical oscillators are composed of the vibrations of two Be+ - Mg+ ion pairs in spatially separate locations. The techniques demonstrated in this experiment are likely to form core components of large-scale trapped-ion QIP. Other work at NIST includes characterization of ion transport dynamics in a trap array that includes a 2-D junction, recent developments in micro-fabricated surface traps, and studies of dynamic decoupling. * supported by IARPA and the NIST Quantum Information Program