6 papers
Generating quantum entanglement from sunlight
Cheng Li, Jasvinder Brar, Michael Küblböck +4
Energy consumption is becoming a serious bottleneck for integrating quantum technologies within the existing global information infrastructure. In photonic architectures, considera…
Full-field mapping of spatially varying polarization entanglement generated from spontaneous parametric down-conversion
Cheng Li, Girish Kulkarni, Isaac Soward +6
Two-photon states generated from spontaneous parametric down-conversion (SPDC) can display entanglement in all degrees of freedom (DoFs) of light, including spatial, temporal, and…
Violation of local realism with spatially multimode parametric down-conversion pumped by spatially incoherent light
Cheng Li, Jeremy Upham, Boris Braverman +1
We experimentally demonstrate a violation of local realism with highly spatially multimode polarization-entangled two-photon states produced by spontaneous parametric down-conversi…
All-optical turbulence mitigation for free-space quantum key distribution using stimulated parametric down-conversion
Aaron A. Aguilar-Cardoso, Cheng Li, Tobey J. B. Luck +4
In this work, we propose and demonstrate a turbulence-resilient scheme for free-space quantum communication. By leveraging the phase conjugation property of stimulated parametric d…
Can We Conjugate the Orbital Angular Momentum of a Single Photon with Nonlinear Optics? A Theoretical Analysis
Tobey Luck, Aarón Aguilar-Cardoso, Cheng Li +4
Stimulated parametric down-conversion (StimPDC) produces an idler beam that exhibits a phase conjugate of the spatial structure of the classical seed beam. Extending this effect to…
Tailoring Spatial Modes Produced by Stimulated Parametric Downconversion
A. A. Aguilar-Cardoso, C. Li, T. J. B. Luck +4
We theoretically study and experimentally demonstrate controlled generation of spatial modes of light via stimulated parametric downconversion (StimPDC) by transferring the spatial…