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Erlangen 2022 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 53: Nano-Optics II

Q 53.5: Talk

Thursday, March 17, 2022, 15:00–15:15, Q-H11

Coherent control of group-4 vacancies in diamond for the purpose of cluster state creation — •Gregor Pieplow, Joseph H. D. Munns, Mariano I. Monsalve, and Tim Schröder — Department of Physics, Humboldt-Universität zu Berlin, Germany

One of the biggest challenges in measurement-based photonic quantum computation is the creation of 2d-cluster states, a type of highly entangled resource state. Cluster states enable quantum computation through purely local operations and measurements on the individual qubits that make up the state. Crucially, measurement-based quantum computation does not require additional entangling operations, because entanglement is already present in the resource state. The difficulty in entangling individual photons is thus separated from the details of the computation and can be studied in isolation. In this contribution we address the generation of a linear cluster state with group-4 vacancies such as the Silicon Vacancy (SiV) and Tin Vacancy (SnV) in diamond. An emission-based scheme for the generation of a linear cluster state on a group-4 vacancy platform requires local control operations and Purcell enhancement. This work explores local gate operations with a Raman scheme and addresses additional challenges that arise when Purcell enhancement is introduced.

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