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Barium ions for quantum computation

Matthew Dietrich

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

Abstract. Individually trapped 137 Ba + in an RF Paul trap is proposed as a qubit candidate, and its various benefits are compared to other ionic qubits. We report the current experimental status of using this ion for quantum computation. Future plans and prospects are discussed.

Related papers

Barium Ions for Quantum Computation

Matthew Dietrich, A. Avril, R. Bowler +6 more

Individually trapped 137Ba+ in an RF Paul trap is proposed as a qubit candidate, and its various benefits are compared to other ionic qubits. We report the current experimental status of using this ion for quantum computation. Future plans and prospects are discussed.

AIP conference proceedings•Jan 1, 2009•17 citations

Barium Ions for Quantum Computation

Matthew Dietrich, A. Avril, R. Bowler +4 more

Individually trapped 137Ba+ in an RF Paul trap is proposed as a qubit ca ndidate, and its various benefits are compared to other ionic qubits. We report the current experimental status of using this ion for quantum computation. Fut ure plans and prospects are discussed.

arXiv:0905.2701•May 16, 2009•0 citations

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Ion trap is one of the leading physical platforms to implement quantum computation. Currently, high-fidelity elementary quantum operations above the fault-tolerant threshold, including state preparation, measurement and universal gates, have been demonstrated for tens of ionic qubits. One important future research direction is to further enlarge the qubit number to the scale required for solving practical problems while maintaining the high performance of individual qubits. This paper introduces the current mainstream schemes for scalable ion trap quantum computation like quantum charge-coupled device (QCCD) and ion-photon quantum network, and describes the main limiting factors in current research. Then we further explore new schemes to scale up the qubit number like two-dimensional ion crystals and dual-type qubit, and discuss the future research directions.

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Quantum information has typically focused on using 2-level qubits to perform simulation and computation. We propose to expand the number of levels for computation using qudits, where \\(d>2\\). Doing so could be a viable option for making trapped ion systems scalable for quantum computation. Our group in particular will use Barium ions because of some energy features and convenient laser wavelengths. This thesis presents much of the necessary background needed to work with Barium as a qudit for quantum computation. Energy structure, branching ratios, and saturation intensities are derived and presented. In addition, a method for selecting different isotopes of Barium for trapping is discussed. A method for measuring out the state of a Barium qudit is presented, with error rates estimated to be under \\(1\\%\\) for up to 5-level qudits. Finally, various optics projects which were necessary for building up our first ion trap are outlined.

•Sep 26, 2019•1 citation

Experimental setup for manipulating radioactive 133Ba+ (I = 1/2) ions

Shimada Hiroyuki, Hosaka Koichi, Kashiwagi Hirotsugu +7 more

An experimental setup for quantum information processing using trapped Ba+ ions as qubit carriers has been designed and is under construction. Among various isotopes of barium, the isotope with a mass number A = 133 has the lowest non-zero nuclear spin I = 1/2, having several desired properties with regard to quantum information processing.† In this presentation, we show the setup for cooling and manipulationg 133Ba+ ions, as well as other isotopes.

•Jul 4, 2024•0 citations
Ion trap is one of the leading physical platforms to implement quantum computation. Currently, high-fidelity elementary quantum operations above the fault-tolerant threshold, including state preparation, measurement and universal gates, have been demonstrated for tens of ionic qubits. One important future research direction is to further enlarge the qubit number to the scale required for solving practical problems while maintaining the high performance of individual qubits. This paper introduces the current mainstream schemes for scalable ion trap quantum computation like quantum charge-coupled device (QCCD) and ion-photon quantum network, and describes the main limiting factors in current research. Then we further explore new schemes to scale up the qubit number like two-dimensional ion crystals and dual-type qubit, and discuss the future research directions.
Quantum information has typically focused on using 2-level qubits to perform simulation and computation. We propose to expand the number of levels for computation using qudits, where \\(d>2\\). Doing so could be a viable option for making trapped ion systems scalable for quantum computation. Our group in particular will use Barium ions because of some energy features and convenient laser wavelengths. This thesis presents much of the necessary background needed to work with Barium as a qudit for quantum computation. Energy structure, branching ratios, and saturation intensities are derived and presented. In addition, a method for selecting different isotopes of Barium for trapping is discussed. A method for measuring out the state of a Barium qudit is presented, with error rates estimated to be under \11\\%\1 for up to 5-level qudits. Finally, various optics projects which were necessary for building up our first ion trap are outlined.