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

Phosphorus donor nuclear spins in silicon couple weakly to the environmentmaking them promising candidates for high-fidelity qubits. The state of a donornuclear spin qubit can be manipulated and read out using its hyperfineinteraction with the electron confined by the donor potential. Here we use amaster equation-based approach to investigate how the backaction from thiselectron-mediated measurement affects the lifetimes of single and multi-donorqubits. We analyze this process as a function of electric and magnetic fields,and hyperfine interaction strength. Apart from single nuclear spin flips, weidentify an additional measurement-related mechanism, the nuclear spinflip-flop, which is specific to multi-donor qubits. Although this flip-flopmechanism reduces qubit lifetimes, we show that it can be effectivelysuppressed by the hyperfine Stark shift. We show that using atomic precisiondonor placement and engineered Stark shift, we can minimize the measurementbackaction in multi-donor qubits, achieving larger nuclear spin lifetimes thansingle donor qubits.

Impact of measurement backaction on nuclear spin qubits in silicon