Affiliation:
1. Purdue University
2. SRI International
3. Oak Ridge National Laboratory
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 fidelities of
∼
98
%
for discriminating between the
|
Ψ
+
⟩
and
|
Ψ
−
⟩
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.
Funder
U.S. Department of Energy
Office of Science
Air Force Research Laboratory
National Science Foundation
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
8 articles.
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