Complete Methods Set for Scalable Ion Trap Quantum Information Processing

Abstract

Hi Fi Quantum Computing In quantum information processing, one goal is to control the entangled states of objects such that they can interact during logical operations but otherwise have minimal interactions with their environment. In one scheme for quantum computing, ions are trapped within and physically moved by electric fields. One drawback is that the entangled states can be sensitive to stray magnetic fields. Home et al. (p. 1227 , published online 6 August 2009) show that coupling of the ions (in this case, 9 Be + ) with a second ion ( 24 Mg + ) can create states that are relatively insensitive to magnetic fields and also allows for recooling of the ions during operation. This approach can minimize the loss of fidelity that occurs during ion transport.