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ECS Transactions

(Invited) Ion Trap Quantum Computing: A New Computing Regime

Manas Mukherjee, Tarun Dutta, Noah Van Horne, Yisheng Lei, Peiliang Liu, Jasper Phua Sing Cheng, Dahyun Yum

Published Jul 20, 2018• 1 citation
Publisher

Abstract

Quantum computer is fast maturing from its infancy. Among different quantum computing platforms, ion trap quantum computer holds promise of both scalability as well as low error rate. In the following, a brief review of the field will be provided along with its present status and the future challenges.
DOI
10.1149/08607.0097ecst

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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.
The remarkable developments in theoretical and experimental quantum computation that have been inspired by Feynman’s seminal papers on the subject are reviewed. Following an introduction to quantum computation, the implications for cryptography of quantum factoring are discussed. The requirements and challenges for practical quantum computational hardware are illustrated with an overview of the ion trap quantum computation project at Los Alamos. The physical limitations to quantum computation with trapped ions are analyzed and an assessment of the computational potential of the technology is made. … it seems that the laws of physics present no barrier to reducing the size of computers until bits are the size of atoms, and quantum behavior holds dominant sway.” R. P. Feynman, 1985 [ 1 ]. “I think I can safely say that nobody understands quantum mechanics.” R. P. Feynman, 1965 [ 2 ].