Hanbury-Brown and Twiss(HBT)effect is the foundation for stellar intensity interferometry.However,it is a phase insensitive two-photon interference effect.Here we extend the HBT interferometer by mixing intensity-matc...Hanbury-Brown and Twiss(HBT)effect is the foundation for stellar intensity interferometry.However,it is a phase insensitive two-photon interference effect.Here we extend the HBT interferometer by mixing intensity-matched reference fields with the input fields before intensity correlation measurement.With the freely available coherent state serving as the reference field,we experimentally demonstrate the phase sensitive two-photon interference effect when the input fields are thermal fields in either continuous wave or non-stationary pulsed wave and measure the complete complex second-order coherence function of the input fields without bringing them together from separate locations.Moreover,we discuss how to improve the signal level by using the more realistic continuous wave broadband anti-bunched light fields as the reference field.Our investigations pave the way for developing new technology of remote sensing and interferometric imaging with applications in long baseline high-resolution astronomy.展开更多
基金supported in part by the National Natural Science Foundation of China(Grant Nos.12004279,92476113 and 12074283)by City University of Hong Kong(Project No.9610522)+1 种基金the General Research Fund from Hong Kong Research Grants Council(Nos.11315822,11301624)Joint NSFC/RGC Collaborative Research Scheme(No.CRS_CityU103/24).
文摘Hanbury-Brown and Twiss(HBT)effect is the foundation for stellar intensity interferometry.However,it is a phase insensitive two-photon interference effect.Here we extend the HBT interferometer by mixing intensity-matched reference fields with the input fields before intensity correlation measurement.With the freely available coherent state serving as the reference field,we experimentally demonstrate the phase sensitive two-photon interference effect when the input fields are thermal fields in either continuous wave or non-stationary pulsed wave and measure the complete complex second-order coherence function of the input fields without bringing them together from separate locations.Moreover,we discuss how to improve the signal level by using the more realistic continuous wave broadband anti-bunched light fields as the reference field.Our investigations pave the way for developing new technology of remote sensing and interferometric imaging with applications in long baseline high-resolution astronomy.
