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

We observe measurement-induced qubit state mixing in a transmon qubitdispersively coupled to a planar readout cavity. Our results indicate thatdephasing noise at the qubit-readout detuning frequency is up-converted byreadout photons to cause spurious qubit state transitions, thus limiting thenondemolition character of the readout. Furthermore, we use the qubittransition rate as a tool to extract an equivalent flux noise spectral densityat f ~ 1 GHz and find agreement with values extrapolated from a $1/f^\alpha$fit to the measured flux noise spectral density below 1 Hz.

Measurement-induced qubit state mixing in circuit QED from up-converted dephasing noise