Time-reversed two-photon interferometry for phase super-resolution

Abstract

We observed two-photon phase super-resolution in an unbalanced Michelson interferometer with classical Gaussian laser pulses. Our work is a time-reversed version of a two-photon interference experiment using an unbalanced Michelson interferometer. A measured interferogram exhibits two-photon phase super-resolution with a high visibility of 97.9% \pm 0.4%. Its coherence length is about 22 times longer than that of the input laser pulses. It is a classical analogue to the large difference between the one- and two-photon coherence lengths of entangled photon pairs.

6 pages, 4 figures

References in corpus (4)

• Quantum-inspired interferometry with chirped laser pulses
• "Quantum-optical coherence tomography" with classical light
• Classical analogues of two-photon quantum interference
• Arbitrarily High Super-Resolving Phase Measurements at Telecommunication Wavelengths

Cited by in corpus (6)

• Classical Realization of Dispersion Cancellation by Time-Reversal Method
• Two-photon interferences of weak coherent lights
• Observation of nonlinear variations in three-vertex geometric phase in two-photon polarization qutrit
• Optically probing Schwinger angular momenta in a micromechanical resonator
• Classical reconstruction of interference patterns of position-wavevector-entangled photon pairs by time-reversal method
• Experimental interference of uncorrelated photons