Long range correlated charge transport between Josephson junction arrays
Chien-Han Chen1*, Wei-Chen Chien2, Watson Kuo2, Hiroshi Shimada3, Cen-Shawn Wu4
1Graduate Institute of Photonics, National Changhua University of Education, Changhua, Taiwan
2Department of Physics, National Chung Hsing University, Taichung, Taiwan
3Department of Engineering Science, The University of Electro-Communications, Tokyo, Japan
4Department of Physics, National Chang-Hua University of Education, ChangHua, Taiwan
* presenting author:Chien Han Chen, email:klmirtrw@gmail.com
The correlation between charge carriers in two separated electronic systems are of great interest since it reveals many fundamental properties of the carriers. We experimentally demonstrate a highly correlated charge transport due to exchange of real photons between remote quantum components in free space. We investigated and analyzed the long-range nonlocal induction of conductance in one single-junction array (“receiver”) when the other double-junction array (“emitter”) is biased. Photon was emitted to increase the conductance of a nearby isolated single-junction array. The induction strength reduces as emitted power decreases when double junction array changed into insulate state. It is found that photon emission power is linearly proportional to bias current of the emitting array and the shrinkage in Coulomb gap UCB follows a quasi-reentrant behavior upon Ix0.5. The observed strong correlation in the 1D systems could lead to a new understanding of superconductivity, in particular Josephson physics in higher dimensions, as well as possible applications in remote transferring classical and quantum information.

Keywords: long-range, correlated, Josephson junction, array, 1D systems