Cryptography, quantum computation and trapped ions

LA-UR-97-4986 Cryptography, Quantum Computation and Trapped Ions

The significance of quantum computation for cryptography is discussed. Following a brief survey of the requirements for quantum computational hardware, an overview of the ion trap quantum computation project at Los Alamos is presented. The physical limitations to quantum computation with trapped ions are analyzed and an assessment of the computational potential of the technology is made.

Quantum computation with trapped ions and atoms

Nonadiabatic geometric quantum computation with trapped ions

Xin-Qi Li, Li-Xiang Cen, Guoxiang Huang, Lei Ma, and YiJing Yan National Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China Key Laboratory for Optical and Magnetic Resonance Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062, China Department of Chemistry, Hong Kong U...

Quantum Computation , Spectroscopy of Trapped Ions , and Schrödinger ’ s Cat ∗

We summarize efforts at NIST to implement quantum computation using trapped ions, based on a scheme proposed by J.I. Cirac and P. Zoller (Innsbruck University). The use of quantum logic to create entangled states, which can maximize the quantum-limited signal-to-noise ratio in spectroscopy, is discussed.

Geometric manipulation of trapped ions for quantum computation.

We propose an experimentally feasible scheme to achieve quantum computation based solely on geometric manipulations of a quantum system. The desired geometric operations are obtained by driving the quantum system to undergo appropriate adiabatic cyclic evolutions. Our implementation of the all-geometric quantum computation is based on laser manipulation of a set of trapped ions. An all-geometri...