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Pinning-induced formation of vortex clusters and giant vortices in mesoscopic superconducting disks
W. Escoffier, I. V. Grigorieva, V. R. Misko +4
Multi-quanta, or giant, vortices (GVs) are known to appear in very small superconductors near the superconducting transition due to strong confinement of magnetic flux. Here we pre…
Investigation of possibility of creation of a superconductor quantum register
A. A. Burlakov, V. L. Gurtovoi, S. V. Dubonos +2
Multiple and single measurements of quantum states of mesoscopic superconducting loops are carried out in order to investigate a possibility of macroscopic quantum superposition an…
Multiple and single measurements of a mesoscopic quantum system with two permitted states
A. A. Burlakov, V. L. Gurtovoi, S. V. Dubonos +2
Mesoscopic loop is proposed in many works as possible solid-state quantum bit, i.e. two-state quantum system. The quantum oscillations of resistance and of rectified voltage observ…
Could two degenerate energy states be observed for a superconducting ring at /2?
A. A. Burlakov, V. L. Gurtovoi, S. V. Dubonos +2
The Little-Parks oscillations of the resistance and the quantum oscillations of the rectified voltage observed for asymmetric superconducting Al rings give experimental evidence of…
Quantum oscillations of the rectified voltage and the critical current of asymmetric mesoscopic superconducting loops
V. L. Gurtovoi, S. V. Dubonos, A. V. Nikulov +2
The current-voltage curves and magnetic dependence of the critical current of asymmetric superconducting loops are measured. It was found that sign and value of the asymmetry of th…
Quantum detector of noise based on a system of asymmetric Al superconducting rings
V. L. Gurtovoi, S. V. Dubonos, R. V. Kholin +3
The quantum rectification effect observed on asymmetric superconducting loops is proposed to use as a basic of a noise detector with maximum sensitivity. The measurements show that…