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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In contrast to natural atoms, the potential energies for superconducting fluxqubit (SFQ) circuits can be artificially controlled. When the inversionsymmetry of the potential energy is broken, we find that the multi-photonprocesses can coexist in the multi-level SFQ circuits. Moreover, there are notonly transverse but also longitudinal couplings between the external magneticfields and the SFQs when the inversion symmetry of potential energy is broken.The longitudinal coupling would induce some new phenomena in the SFQs. Here wewill show how the longitudinal coupling can result in the coexistence ofmulti-photon processes in a two-level system formed by a SFQ circuit. We alsoshow that the SFQs can become transparent to the transverse coupling fieldswhen the longitudinal coupling fields satisfy the certain conditions. Wefurther show that the quantum Zeno effect can also be induced by thelongitudinal coupling in the SFQs. Finally we clarify why the longitudinalcoupling can induce coexistence and disappearance of single- and two-photonprocesses for a driven SFQ, which is coupled to a single-mode quantized field.

Coexistence of multi-photon processes and longitudinal couplings in superconducting flux qubits