How to Measure Magnetic Flux with a Single Position Measurement?
  Current methods for measuring magnetic flux are based on performing many measurements over a large ensemble of electrons. We propose a novel method based on wavefunction "revival" for measuring the flux modulo hc/2e using only a single electron. A preliminary analysis of the feasibility of the experiment is provided. 
Eliahu Cohen, Lev Vaidman and Yakir Aharonov
quant-ph cond-mat.other