Test of macroscopic realism with coherent light
- URL: http://arxiv.org/abs/2302.08803v1
- Date: Fri, 17 Feb 2023 10:56:19 GMT
- Title: Test of macroscopic realism with coherent light
- Authors: Hui Wang, Shuang Wang, Cong-Feng Qiao
- Abstract summary: We report the LGI violation of path observable in a composite interference experiment with coherent light.
Experiment results confirm the occurrence of destructive interference providing per se as evidence of macro-realism violation.
- Score: 7.43265504719989
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Macro-realism is a fundamental feature of classical world that contradicts
with the quantum theory. An elegant method of testing macrorealism is to apply
the Leggett-Garg inequality (LGI), but the non-invasivity of measurement is
challenging in practice. In this work, we report the LGI violation of path
observable in a composite interference experiment with coherent light.
Experiment results confirm the occurrence of destructive interference providing
per se as evidence of macro-realism violation. And by using an exact weak
measurement model in the present experiment, the advantage that the violation
of realism is independent of the invasive strength allows the realization of
direct measurement and strengthens the persuasion of verification at the
macroscopic scale.
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