Generating Maximal Entanglement between Spectrally Distinct Solid-State Emitters

David L. Hurst, Kristoffer B. Joanesarson, Jake Iles-Smith, Jesper Mørk, Pieter Kok

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We show how to create maximal entanglement between spectrally distinct solid-state emitters embedded in a waveguide interferometer. By revealing the rich underlying structure of multiphoton scattering in emitters, we show that a two-photon input state can generate deterministic maximal entanglement even for emitters with significantly different transition energies and linewidths. The optimal frequency of the input is determined by two competing processes: which-path erasure and interaction strength. We find that smaller spectral overlap can be overcome with higher photon numbers, and quasimonochromatic photons are optimal for entanglement generation. Our work provides a new methodology for solid-state entanglement generation, where the requirement for perfectly matched emitters can be relaxed in favor of optical state optimization.

Original languageEnglish
Article number023603
JournalPhysical Review Letters
Issue number2
Number of pages6
Publication statusPublished - 9 Jul 2019

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