Testing a continuous-variable Bell-like inequality with a hybrid-encoded system

Researchers have successfully tested a continuous-variable Bell-like inequality with a hybrid-encoded system, challenging the notion that quadrature measurements on Gaussian continuous-variable systems cannot violate a Bell inequality¹. This breakthrough was achieved by involving sequential measurements, which led to a violation of the inequality. The findings have significant implications for quantum computing and quantum information processing, as they demonstrate the potential of continuous-variable systems to exhibit nonclassical behavior. The study's results rely on the use of a hybrid-encoded system, which enables the implementation of sequential measurements. This development is crucial for advancing quantum computing and rewriting assumptions about computation and cryptography. The ability to violate a Bell inequality in continuous-variable systems opens up new possibilities for quantum information processing and highlights the need for further research into the properties of these systems. This matters to practitioners because it suggests that continuous-variable systems may be more suitable for certain quantum computing applications than previously thought.