Multidimensional cluster states using a single spin-photon interface coupled strongly to an intrinsic nuclear register
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Authors
Michaels, CP
Martinez, JA
Debroux, R
Parker, RA
Stramma, AM
Huber, LI
Purser, CM
Atature, M
Gangloff, DA
Publication Date
2021-04-26Journal Title
Quantum
ISSN
2521-327X
Publisher
Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften
Issue
5
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Michaels, C., Martinez, J., Debroux, R., Parker, R., Stramma, A., Huber, L., Purser, C., et al. (2021). Multidimensional cluster states using a single spin-photon interface coupled strongly to an intrinsic nuclear register. Quantum, (5) https://doi.org/10.22331/Q-2021-10-19-565
Abstract
Photonic cluster states are a powerful resource for measurement-based quantum
computing and loss-tolerant quantum communication. Proposals to generate
multi-dimensional lattice cluster states have identified coupled spin-photon
interfaces, spin-ancilla systems, and optical feedback mechanisms as potential
schemes. Following these, we propose the generation of multi-dimensional
lattice cluster states using a single, efficient spin-photon interface coupled
strongly to a nuclear register. Our scheme makes use of the contact hyperfine
interaction to enable universal quantum gates between the interface spin and a
local nuclear register and funnels the resulting entanglement to photons via
the spin-photon interface. Among several quantum emitters, we identify the
silicon-29 vacancy centre in diamond, coupled to a nanophotonic structure, as
possessing the right combination of optical quality and spin coherence for this
scheme. We show numerically that using this system a 2x5-sized cluster state
with a lower-bound fidelity of 0.5 and repetition rate of 65 kHz is achievable
under currently realised experimental performances and with feasible technical
overhead. Realistic gate improvements put 100-photon cluster states within
experimental reach.
Sponsorship
European Commission Horizon 2020 (H2020) ERC (884745)
Identifiers
External DOI: https://doi.org/10.22331/Q-2021-10-19-565
This record's URL: https://www.repository.cam.ac.uk/handle/1810/331001
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