Unforgeable quantum money can be stored in an ultracold ‘debit card’

Using the quantum states of particles of light as currency could make for unforgeable transactions, and a new experiment has added a way to save some of that quantum money for future use, too

​Using the quantum states of particles of light as currency could make for unforgeable transactions, and a new experiment has added a way to save some of that quantum money for future use, too Using the quantum states of particles of light as currency could make for unforgeable transactions, and a new experiment has added a way to save some of that quantum money for future use, too