QUANTUM COMPUTER AND CONTROL METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To arbitrarily control the mutual action between quantum bits in operation of a quantum computer. SOLUTION: A Josephson joint field effect transistor (JOFET) 102 is used as a switching means for switching (turning on and off a superconducting current) a magnetic flux transfer device 101 constructed by a superconductor between the flowing state of superconducting current and the no-flowing state. The mutual action between magnetic flux quantum bits 104a, 104b is arbitrarily controlled to realize the quantum entangled state.