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arXiv · 1802.02859

Frequency-encoded linear cluster states with coherent Raman photons

Dale Scerri·Ralph N. E. Malein·Brian D. Gerardot·Erik M. Gauger
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Abstract

Entangled multi-qubit states are an essential resource for quantum information and computation. Solid-state emitters can mediate interactions between subsequently emitted photons via their spin, thus offering a route towards generating entangled multi-photon states. However, existing schemes typically rely on the incoherent emission of single photons and suffer from severe practical limitations, for self-assembled quantum dots most notably the limited spin coherence time due to Overhauser magnetic field fluctuations. We here propose an alternative approach of employing spin-flip Raman scattering events of self-assembled quantum dots in Voigt geometry. We argue that weakly driven hole spins constitute a promising platform for the practical generation of frequency-entangled photonic cluster states.

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Dale Scerri, Ralph N. E. Malein, Brian D. Gerardot, Erik M. Gauger. 2018-02-08. Frequency-encoded linear cluster states with coherent Raman photons. https://doi.org/10.1103/physreva.98.022318

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