  Hanbury-Brown and Twiss (HBT) effect is the foundation for stellar intensity
interferometry. However, it is a phase insensitive two-photon interference
effect. In this paper, we extend the HBT interferometer by mixing two
phase-coherent input fields with coherent auxiliary fields before intensity
correlation measurement and achieve phase sensitive two-photon interference so
as to measure the complete complex second-order coherence function of the input
fields. This practical scheme paves the way for synthetic aperture imaging for
astronomical applications in optical regime. Pulsed input fields is also tested
for potential remote sensing and ranging applications. We discuss the condition
to implement recently proposed entanglement-based telescopy scheme with the
more realistic cw broadband anti-bunched light fields.

Quantum Physics