Single-spin detection by qubit SWAP to a molecular nanomagnetM. Feng1, 2 and J. Twamley1
1 Department of Mathematical Physics, National University of Ireland Maynooth, Co. Kildare, Ireland
2 Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences Wuhan, 430071, PRC
received 26 May 2004; accepted in final form 22 December 2004
published online 26 January 2005
Spin state detection is a key but very challenging step for any spin-based solid-state quantum computing technology. In fullerene-based quantum computer technologies, we here propose to detect the single spin inside a fullerene by transferring the quantum information from the endohedral spin to the ground states of a molecular nanomagnet , with large spin S=10. We show how to perform the required SWAP operation and how to read out the information through state-of-the-art techniques such as micro-SQUID.
03.67.Lx - Quantum computation.
73.21.-b - Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems.
© EDP Sciences 2005