Generation of frequency entanglement with an effective quantum dot-waveguide two-photon quadratic interaction
- URL: http://arxiv.org/abs/2505.10121v1
- Date: Thu, 15 May 2025 09:47:10 GMT
- Title: Generation of frequency entanglement with an effective quantum dot-waveguide two-photon quadratic interaction
- Authors: Mohamed Meguebel, Maxime Federico, Simone Felicetti, Nadia Belabas, Nicolas Fabre,
- Abstract summary: We exploit the atomic-like four-level structure of a quantum dot coupled to a waveguide to model a shaping frequency entangling gate (ShaFrEnGa) for single photons.<n>Our approach is based on the identification of input frequencies and an atomic level structure for which frequency-dependent one-photon transitions are adiabatically eliminated.<n>The frequency entanglement performance of the gate is analyzed using a Schmidt decomposition for continuous variables, revealing a trade-off between entanglement generation efficiency and entanglement quality.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Light-matter interactions with quantum dots have been extensively studied to harness key quantum properties of photons, such as indistinguishability and entanglement. In this theoretical work, we exploit the atomic-like four-level structure of a quantum dot coupled to a waveguide to model a shaping frequency entangling gate (ShaFrEnGa) for single photons. Our approach is based on the identification of input frequencies and an atomic level structure for which frequency-dependent one-photon transitions are adiabatically eliminated, while frequency-dependent two-photon transitions are resonantly enhanced. The frequency entanglement performance of the gate is analyzed using a Schmidt decomposition for continuous variables, revealing a trade-off between entanglement generation efficiency and entanglement quality. We further demonstrate the use of the ShaFrEnGa for the generation of entangled frequency qudit states.
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