1. Versatile microwave-driven trapped ion spin system for quantum information processing
- Author
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Piltz, Ch., Sriarunothai, Th., Ivanov, S., Wölk, S., and Wunderlich, Ch.
- Subjects
Quantum Physics - Abstract
Using trapped atomic ions we demonstrate a tailored and versatile effective spin-system suitable for quantum simulations and universal quantum computation. By simply applying microwave pulses, selected spins can be decoupled from the remaining system and thus can serve as a quantum memory, while simultaneously, other coupled spins perform conditional quantum dynamics. Also, microwave pulses can change the sign of spin-spin couplings, as well as their effective strength, even during the course of a quantum algorithm. Taking advantage of the simultaneous long-range coupling between three spins a coherent quantum Fourier transform -- an essential building block for many quantum algorithms -- is efficiently realized. This approach, which is based on microwave-driven trapped ions and is complementary to laser-based methods, opens a new route to overcoming technical and physical challenges in the quest for a quantum simulator and a quantum computer., Comment: Published version. 22 pages, 5 figures
- Published
- 2015
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