期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.017002
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资金
- Simons Foundation
- Fulbright Foundation
- BIKURA (FIRST) program of the Israel Science Foundation
- NSF DMR Grant [1006060, 1206612]
- College de France
- ANR grant [ANR-11-JS04-003-01]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1006060, 1206612] Funding Source: National Science Foundation
Quantum fluctuations in an anharmonic superconducting circuit enable frequency conversion of individual incoming photons. This effect, linear in the photon beam intensity, leads to ramifications for the standard input-output circuit theory. We consider an extreme case of anharmonicity in which photons scatter off a small set of weak links within a Josephson junction array. We show that this quantum impurity displays Kondo physics and evaluate the elastic and inelastic photon scattering cross sections. These cross sections reveal many-body properties of the Kondo problem that are hard to access in its traditional fermionic version. DOI: 10.1103/PhysRevLett.110.017002
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