Cumulative generation of maximal entanglement between spectrally
distinct qubits using squeezed light
- URL: http://arxiv.org/abs/2102.12341v2
- Date: Tue, 9 Nov 2021 16:30:30 GMT
- Title: Cumulative generation of maximal entanglement between spectrally
distinct qubits using squeezed light
- Authors: Elena Callus and Pieter Kok
- Abstract summary: We show how to create entanglement between two qubits encoded in two spectrally distinct solid-state quantum emitters embedded in a waveguide interferometer.
The method does not require perfectly identical emitters, and accommodates spectral variations due to the fabrication process.
It is robust enough to create entanglement with a concurrence above 99% in the event of scattering losses and detector inefficiencies.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We demonstrate how to create maximal entanglement between two qubits that are
encoded in two spectrally distinct solid-state quantum emitters embedded in a
waveguide interferometer. The optical probe is provided by readily accessible
squeezed light, generated by parametric down-conversion. By continuously
illuminating the emitters, the photon scattering and incremental path-erasure
builds up entanglement. Our method does not require perfectly identical
emitters, and accommodates spectral variations due to the fabrication process.
Furthermore, for some line-width and energy ratios, the entanglement build-up
can be significantly faster than for more similar emitters. It is also robust
enough to create entanglement with a concurrence above 99\% in the event of
scattering losses and detector inefficiencies, and can form the basis for
practical entangled networks.
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