Quantum-limited Josephson amplifier and method of configuring the same, and system for remotely entangled qubits by measurement and method of configuring the same

摘要

A quantum-limited microwave amplifier is provided. A Josephson ring modulator (JRM) is connected to a first lumped element resonator. The first lumped element resonator includes one or more first lumped elements. The second lumped element resonator is connected to the JRM, and the second lumped element resonator includes one or more second lumped elements. The JRM, the first lumped element resonator, and the second lumped element resonator form a Josephson parametric converter (JPC). The one or more first lumped elements and the one or more second lumped elements have the same value, thereby configuring the JPC to be spectrally degenerate. [Selection diagram] Fig. 1