Bell state analyzer for spectrally distinct photons
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 04, 2022
- Source ID
- 10.1364/optica.443302
Entities
People
- Andrew M. Weiner
- Daniel E Leaird
- Hsuan-Hao Lu
- Joseph M Lukens
- Navin B Lingaraju
- Steven Estrella
Organizations
- Air Force Research Laboratory
- National Science Foundation
- Oak Ridge National Laboratory
- Office of Science
- Purdue University
- SRI International
- United States Department of Energy