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

Linear optical quantum computing is beset by the lack of deterministicentangling operations besides photon loss. Motivated by advancements at theexperimental front in deterministic generation of various kinds of multiphotonentangled states, we propose an architecture for linear-optical quantumcomputing that harnesses the availability of three-photonGreenberger-Horne-Zeilinger (GHZ) states. Our architecture and its subvariantsuse polarized photons in GHZ states, polarization beam splitters, delay lines,optical switches and on-off detectors. We concatenate topological quantum errorcorrection code with three-qubit repetition codes and estimate that ourarchitecture can tolerate remarkably high photon-loss rate of $11.5 \%$; thismakes a drastic change that is at least an order higher than those of knownproposals. Further, considering three-photon GHZ states as resources, weestimate the resource overheads to perform gate operations with an accuracy of$10^{-6}~(10^{-15})$ to be $2.0\times10^6~(5.6\times10^7)$. Compared to otherall-photonic schemes, our architecture is also resource-efficient. In addition,the resource overhead can be even further improved if larger GHZ states areavailable. Given its striking enhancement in the photon loss threshold and therecent progress in generating multiphoton entanglement, our scheme will makescalable photonic quantum computing a step closer to reality.

All-photonic architectural roadmap for scalable quantum computing using Greenberger-Horne-Zeilinger states