Abstract
In this paper, instead of generating and using quantum entangled states for quantum measurement, we
extract and detect the components that correspond to quantum entangled states by post-selection from
classical optical states. This scheme is derived from a systematic method based on the time-reversal
symmetry of quantum mechanics and allows us to efficiently reproduce the same measurement results
when using quantum entangled states, but with high intensity classical states. We successfully obtained
two-photon interferometric phenomena, such as phase super-resolution and automatic dispersion cancellation
in the Hong-Ou-Mandel interference, with classical optical pulses. The proposed time-reversal
method will be a step toward a new boundary between quantum and classical physics.
