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A nonclassical feature of the fourth–order interference at a beam splitter, that genuine photon spin singlets are emitted in predetermined directions even when incident photons are unpolarized, has been used in a proposal for an experiment that imposes quantum spin correlation on truly independent photons. In the experiment two photons from two such singlets interfere at a beam splitter, and as...

It was recently demonstrated that a photonic crystal slab can function as a mirror for externally incident light along a normal direction with near-complete reflectivity over a broad wavelength range. We analyze the angular and polarization properties of such photonic crystal slab mirror, and show such reflectivity occurs over a sizable angular range for both polarizations. We also show that su...

We propose the design of a novel and highly efficient all-dielectric, three-waveguide polarization splitter based on the phenomenon of resonant tunneling. By considering a glass waveguide structure with an intermediate high-index guiding layer (such as silicon), we show that one can obtain extinction ratios better than -30 dB in both the outer waveguides at a particular thickness of the high-in...

We firstly present a feasible scheme to produce entangled spin-1 photon states from Fock state. The scheme requires only linear optical element and photon detector. The probability of success of method is relatively low. We further give a scheme to show that, if two maximally entangled photon state is prepared in advance, the probability of success can be improved. PACS number:03.65.Ud,42.50.Dv...

Design and fabrication of a 2×2 two-mode interference (TMI) coupler based on-chip polarization splitter is presented. By changing the angle between the access waveguides, one can tune the effective TMI length for the mode with less optical confinement (transverse magnetic, TM) to coincide with the target TMI length for a desired transmission of the mode with higher optical confinement (transver...

quantum nondemolition measurements Recently, Pryde et al. reported the demonstration of a quantum nondemolition (QND) scheme for single-photon polarization states with linear optics and projective measurements. In this experiment, a single photon with a specific polarization in the signal mode interacts on a beam splitter with a second polarized photon in the meter mode. A destructive polarizat...

waveguide (BWG)-based polarization beam splitter (PBS) in a Mach-Zehnder interferometer (MZI) configuration and analyze the structure-dependent or polarization-dependent phase difference, using a delay-line MZI (DL-MZI). We fabricate the DL-MZI using silica-based planar lightwave circuit technology and, using the DL-MZI, demonstrate the ability to optimize a PBS by measuring the birefringence o...