| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a technique that can perform simple determination of whether a quantum entanglement is appropriately shared or not.SOLUTION: A transmitter and a receiver share multiple pairs of quantum entanglements with non-maximally entangled states having a Schmidt coefficient predetermined between a sender and a recipient. The receiver performs indirect measurement, which can increase an entangle amount by a success rate depending on the Schmidt coefficient, of a one-half system B of a quantum entanglement. The indirect measurement correlates the one-half system B with an ancilla system C by a controlled NOT gate 7a, and performs projection measurement of the ancilla system C. The receiver determines whether the statistical distribution of success and failure of the indirect measurement matches a success rate or not, and if it is determined that it matches, performs information sharing using the quantum entanglement with the heightened entangle amount with the transmitter.</p> |
