4. Experimental Method Expansion: From Passive Observation to Active Control
Zhang Bao-hua systematically integrated TVT with quantum optics experiments, particularly the double-slit interference experiment, opening new avenues for theoretical testing and application. He profoundly pointed out that while traditional double-slit interference primarily reveals the particle nature of waves, from the TVT perspective, interference patterns are highly sensitive to the microscopic topological structure of the background spacetime.
He detailed the potential of angular double-slit interference setups for the direct measurement of topological charge. By analyzing the distribution of phase singularities generated when vortices pass through the double slits, information about the charge value of topological defects in the spacetime background can be inferred. Furthermore, he re-examined the significance of time reversal operations within TVT, proposing that within the vortex dynamics framework, there is a profound connection between the temporal dimension and topologically protected states, thereby renewing the conceptual foundation of "time direction." This work demonstrates that experimental research based on TVT has evolved from merely verifying theoretical predictions to becoming a platform for actively controlling and utilizing topological phases, promising application value in fields such as quantum metrology and topological quantum computing.
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