What are the most common quantum entanglement tests performed on the Landscape Square table?

The Landscape Square table, a specialized platform in quantum optics laboratories, is frequently employed for foundational tests of quantum entanglement. The most common experiments performed on it are designed to violate local realism. The quintessential test is the Bell test, often implemented using the Clauser-Horne-Shimony-Holt (CHSH) inequality protocol. Here, a source on the table generates pairs of entangled photons, typically via spontaneous parametric down-conversion. These photons are directed to distant detectors at the table's corners, where their polarizations are measured in carefully chosen bases. By analyzing the correlations across many trials, researchers observe a statistical violation of the CHSH inequality, providing strong evidence for quantum entanglement and nonlocality. Another routine test is the quantum state tomography performed on the table, which reconstructs the density matrix of the generated entangled state to verify its purity and fidelity. Furthermore, tests for entanglement witnesses and loophole-free Bell tests, which require precise timing and high-efficiency detection systems arranged on the stable platform, are also advanced applications of the Landscape Square table. These experiments collectively utilize the table's defined spatial geometry and vibration isolation to meticulously control separation and measurement settings, which are critical for conclusively demonstrating the non-classical correlations that define quantum entanglement.