Mutually Synchronized Macroscopic Josephson Oscillations Demonstrated by Polarization Analysis of Superconducting Terahertz Emitters

M. Tsujimoto; S. Fujita; G. Kuwano; K. Maeda; A. Elarabi; J. Hawecker; J. Tignon; J. Mangeney; S.S. Dhillon; I. Kakeya

doi:10.1103/PhysRevApplied.13.051001

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Mutually Synchronized Macroscopic Josephson Oscillations Demonstrated by Polarization Analysis of Superconducting Terahertz Emitters

M. Tsujimoto, S. Fujita, G. Kuwano, K. Maeda, A. Elarabi, J. Hawecker, J. Tignon, J. Mangeney, S.S. Dhillon, I. Kakeya

DOI 10.1103/PhysRevApplied.13.051001 · Physical Review Applied

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Abstract

We demonstrate mutual synchronization of Josephson oscillations in multiple stacks of intrinsic Josephson junctions of the cuprate superconductor Bi2Sr2CaCu2O8+δ. Detailed analysis of the full polarization parameters allows the determination of a phase correlation between the stacks: a simultaneous emission state is described by a linear combination of individual emission states with a phase retardation. This proves that the stacks are coupled via a Josephson plasma in a superconducting substrate and that the coupling matrices can be extracted from polarization analyses. Our findings suggest a route towards the realization of high-power terahertz sources based on the synchronization of a large number of intrinsic Josephson junctions.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown