Single Electron Transistors with Al/AlO x /Nb and Nb/AlO x /Nb Junctions
作者： R. Dolata , H. Scherer , A. B. Zorin , J. Niemeyer
DOI: 10.1007/978-1-4419-9092-1_28
关键词: Capacitance 、 Superconductivity 、 Condensed matter physics 、 Quantum state 、 Transistor 、 Qubit 、 Tunnel junction 、 Coulomb blockade 、 Materials science 、 Cooper pair
摘要: Superconducting quantum-coherent devices with small tunnel junctions offer the possibility to manipulate single Cooper pairs and control macroscopic quantum states. They may be used construct current standards [1] qubits [2]. For optimum performance, most require Josephson coupling energy E j = (h/4πe)I 0 (RK/R)Δ/8 of same order as charging c e 2/2CΣ, where R K h/e2≈ 25 kΩ, is junction resistance, Δ superconducting gap, CΣ total capacitance island.
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