Shikai Liu

Shikai Liu is a Postdoctoral Fellow at the Niels Bohr Institute, University of Copenhagen, specializing in Quantum Optics and Photonics within the Quantum Optics research group. His position is housed at the institute's main campus in Copenhagen Ø (Blegdamsvej 17).

Dr. Liu's research centers on fundamental quantum phenomena with emphasis on quantum entanglement verification and light-matter interactions. His work bridges theoretical frameworks with experimental implementations in quantum photonics, specifically investigating how photon scattering on quantum emitters can violate Bell inequalities—a cornerstone test for quantum nonlocality. This research directly impacts quantum communication protocols and quantum computing architectures by providing new experimental pathways for generating and verifying entangled states.

His landmark 2024 Nature Physics publication demonstrates a novel experimental violation of Bell inequalities through photon scattering on a two-level emitter, representing a significant advancement in quantum foundations. The work has generated substantial scholarly attention with 43 Mendeley readers, coverage in 4 news outlets, social media engagement across 13 X posts and Reddit, plus academic discussion in specialized blogs.

The research is conducted within the Quantum Optics section of the Niels Bohr Institute, which maintains cutting-edge experimental facilities for quantum photonics including single-photon sources, cryogenic setups, and quantum emitter characterization systems. The group actively collaborates with international quantum technology initiatives and semiconductor nanofabrication centers.