English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

According to the statistical distribution laws, all the elementary particlesin the real 3+1-dimensional world must and only be chosen as either bosons orfermions, without exception and not both. Here, we experimentally verified thata quantized current-biased Josephson junction (CBJJ), as an artificialmacroscopic "particle", can be served as either boson or fermion, depending onits biased dc-current. By using the high vacuum two-angle electron beamevaporations, we fabricated the CBJJ devices and calibrated their physicalparameters by applying low-frequency signal drivings. The microwavetransmission characteristics of the fabricated CBJJ devices are analyzed byusing the input-output theory and measured at 50mK temperature environmentunder low power limit. The experimental results verify the theoreticalpredictions, i.e., when the bias current is significantly lower than thecritical one of the junction, the device works in a well linear regime and thusworks as a harmonic oscillator, i.e., a "boson"; while if the biased current issufficiently large (especially approaches to its critical current), the deviceworks manifestly in the nonlinear regime and thus can be served as a two-levelartificial atom, i.e., a "fermion". Therefore, by adjusting the biaseddc-current, the CBJJ device can be effectively switched from the boson-typemacroscopic particle to the fermion-type one, and thus may open the newapproach of the superconducting quantum device application.

Experimental evidences of a current-biased Josephson junction device can be worked as a macroscopic "Boson" or "Fermion" and the combination