We discuss details of the preparation and detection of entangled electron-nuclear spin states in 15N:C60 together with a quantitative evaluation of the complete density matrix. All four Bell states of a two qubit subsystem were analyzed. In addition we find a quantum critical temperature of Tq = 7.73 K for this system at an electron spin resonance frequency of 95 GHz.
@article{arxiv.quant-ph/0602201,
title = {Density Matrix Tomography of Entangled Electron and Nuclear Spin States in 15N:C60},
author = {Werner Scherer and Michael Mehring},
journal= {arXiv preprint arXiv:quant-ph/0602201},
year = {2007}
}
Comments
12 pages, 9 figures, fig2. and fig 9 came out corrupted; replacing fig. 2 and fig 9