Bell state analyzer for spectrally distinct photons
- URL: http://arxiv.org/abs/2109.06385v1
- Date: Tue, 14 Sep 2021 01:23:57 GMT
- Title: Bell state analyzer for spectrally distinct photons
- Authors: Navin B. Lingaraju, Hsuan-Hao Lu, Daniel E. Leaird, Steven Estrella,
Joseph M. Lukens, and Andrew M. Weiner
- Abstract summary: We demonstrate a Bell state analyzer that operates directly on frequency mismatch.
Based on electro-optic modulators and Fourier-transform pulse shapers, our quantum frequency processor design implements interleaved Hadamard gates in discrete frequency modes.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We demonstrate a Bell state analyzer that operates directly on frequency
mismatch. Based on electro-optic modulators and Fourier-transform pulse
shapers, our quantum frequency processor design implements interleaved Hadamard
gates in discrete frequency modes. Experimental tests on entangled-photon
inputs reveal accuracies of $\sim$98\% for discriminating between the
$|\Psi^+\rangle$ and $|\Psi^-\rangle$ frequency-bin Bell states. Our approach
resolves the tension between wavelength-multiplexed state transport and
high-fidelity Bell state measurements, which typically require spectral
indistinguishability.
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