Transmission of a microwave cavity coupled to localized Shiba states

被引:5
作者
Chirla, Razvan [1 ]
Manolescu, Andrei [2 ]
Moca, Catalin Pascu [1 ,3 ]
机构
[1] Univ Oradea, Dept Phys, Oradea 410087, Romania
[2] Reykjavik Univ, Sch Sci & Engn, Menntavegur 1, IS-101 Reykjavik, Iceland
[3] Budapest Univ Technol & Econ, Inst Phys, BME MTA Exot Quantum Phase Grp, H-1521 Budapest, Hungary
关键词
NUMERICAL RENORMALIZATION-GROUP; ANDERSON MODEL; IMPURITY; QUANTUM; PHOTON;
D O I
10.1103/PhysRevB.93.155110
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We consider a strongly correlated quantum dot, tunnel coupled to two superconducting leads and capacitively coupled to a single mode microwave cavity. When the superconducting gap is the largest energy scale, multiple Shiba states are formed inside the gap. The competition of these states for the ground state signals a quantum phase transition. We demonstrate that photonic measurements can be used to probe such localized Shiba states. Moreover, the quantum phase transition can be pinpointed exactly from the sudden change in the transmission signal. Calculations were performed using the numerical renormalization-group approach.
引用
收藏
页数:9
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