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 describe a method for initializing an ensemble of qubits in a pure groundstate by applying collective cavity cooling techniques in the presence of localdephasing noise on each qubit. To solve the dynamics of the ensemble system weintroduce a method for dissipative perturbation theory that applies averageHamiltonian theory in an imaginary-time dissipative interaction frame to findan average effective dissipator for the system dynamics. We use SU(4) algebragenerators to analytically solve the first order perturbation for an arbitrarynumber of qubits in the ensemble. We find that to first order the effectivedissipator describes local $T_1$ thermal relaxation to the ground state of eachqubit in the ensemble at a rate equal to the collective cavity coolingdissipation rate. The proposed technique should permit the parallelinitialization of high purity states in large ensemble quantum systems based onsolid-state spins.

Cavity cooling to the ground state of an ensemble quantum system