Quantum Money

The scheme is a way of creating quantum coins which are unforgeable with unconditionally security. Our scheme is more practical and noise tolerant than all previous such schemes and prove that our family of schemes remain secure in the presence of up to 25% noise. We further prove that 25% is the maximum tolerable noise for a wide class of secret-key quantum money schemes. Lastly, we show how the scheme can be carried out using coherent states, even with large detector losses.