 Single-shot readout of electron spin states in a quantum dot using spin-dependent tunnel rates by R. Hanson and others

Physical Review Letters 94, 196802. doi.org/10.1103/PhysRevLett.94.196802

Primary preprint, submitted 31 December 2004: arxiv.org/abs/cond-mat/0412768

Pages 1–2 describe energy-selective versus tunnel-rate-selective conversion and the two-electron orbital mechanism. Figures 1–2 show timing/readout; Fig. 4 examines nearly degenerate states. The 2004 preprint date differs from the 2005 journal year.