62 citations · 150 across the 6 of their papers we have counts for
6 papers
Experimental demonstration of phase measurement precision beating standard quantum limit by projection measurement
F. W. Sun, B. H. Liu, Y. X. Gong +3
We propose and demonstrate experimentally a projection scheme to measure the quantum phase with a precision beating the standard quantum limit. The initial input state is a twin Fo…
Demonstration of Temporal Distinguishability of Three and Four Photons with Asymmetric Beam Splitter
Z. Y. Ou, B. H. Liu, F. W. Sun +3
By using an asymmetric beam splitter, we observe the generalized Hong-Ou-Mandel effects for three and four photons, respectively. Furthermore, we can use this generalized Hong-Ou-M…
Entanglement and interference between different degrees of freedom of photons states
F. W. Sun, B. H. Liu, Y. F. Huang +3
In this paper, photonic entanglement and interference are described and analyzed with the language of quantum information process. Correspondingly, a photon state involving several…
Stimulated emission of two photons in parametric amplification and its interpretation as multi-photon interference
F. W. Sun, B. H. Liu, Y. X. Gong +3
Stimulated emission of two photons is observed experimentally in the parametric amplification process and is compared to a three-photon interference scheme. We find that the underl…
Four-Photon Interference with Asymmetric Beam Splitters
B. H. Liu, F. W. Sun, Y. X. Gong +3
Two experiments of four-photon interference are performed with two pairs of photons from parametric down-conversion with the help of asymmetric beam splitters. The first experiment…
Observation of Four-Photon de Broglie Wavelength by State Projection Measurement
F. W. Sun, B. H. Liu, Y. F. Huang +2
A measurement process is constructed to project an arbitrary two-mode -photon state to a maximally entangled -photon state (the {\it NOON}-state). The result of this projecti…