1 Quantum Interference & Entanglement Description (QIE) 2 Quantum Interference & Entanglement Pictures 3 Before the 1st Day of Lab Objectives for this experiment 4 Introduction 4.1 Bell's Theorem and the CHSH Inequality 5 Experimental Setup 5.1 Overview 5.2 Laser Diode 5.3 BBOs 5.4 Detection 5.5 Coincidence Counting 5.6 Proper Start-up Procedure 6 Alignment 6.1 Violet Beam Path 6.2 Infrared Bea...

All previous tests of local realism have studied correlations between single-particle measurements. In the present experiment, we have performed a Bell experiment on three particles in which one of the measurements corresponds to a projection onto a maximally-entangled state. We show theoretically and experimentally, that correlations between these entangled measurements and single-particle mea...

A parametric down conversion source pumped by a monochromatic laser will produce frequency entangled photon pairs. We demonstrate this by an experiment in which five-dimensional frequency entanglement is manipulated at telecommunication wavelengths using commercially available components such as electro-optic phase modulators and narrowband frequency filters. A theoretical intuition for this ap...

1 Quantum Interference & Entanglement Description (QIE) 2 Quantum Interference & Entanglement Pictures 3 Before the 1st Day of Lab Objectives for this experiment 4 Introduction 4.1 Bell's Theorem and the CHSH Inequality 5 Experimental Setup 5.1 Overview 5.2 Laser Diode 5.3 BBOs 5.4 Detection 5.5 Coincidence Counting 5.6 Proper Start-up Procedure 6 Alignment 6.1 Violet Beam Path 6.2 Infrared Bea...

Recently, Agarwal [New J. Phys., 13, 073008(2011)] proposed the generation of a non-Gaussian two-mode quantum vortex state of a system by subtracting a photon from a squeezed vacuum. In the present paper, we study the dynamics of this state under thermal environment. We find strong violation of Bell-CHSH inequality by this state and study the effect of thermal environment on it.

We observe entanglement between photons in controlled super-position states of orbital angular momentum (OAM). By drawing a direct analogy between OAM and polarization states of light, we demonstrate the entangled nature of high order OAM states generated by spontaneous downconversion through violation of a suitable Clauser Horne Shimony Holt (CHSH)-Bell inequality. We demonstrate this violatio...

We report the experimental generation of polarization-entangled photons at telecommunication wavelengths using spontaneous four-wave mixing in silicon-on-insulator wire waveguides. The key component is a 2D coupler that transforms path entanglement into polarization entanglement at the output of the device. Using quantum state tomography we find that the produced state has fidelity 88% with a p...

Using the process of cavity-enhanced spontaneous parametric down-conversion (SPDC), we generate a narrow-band polarization-entangled photon pair resonant on the rubidium (Rb) D1 line (795 nm). The degenerate single-mode photon pair is selected by multiple temperature controlled etalons. The linewidth of generated polarization-entangled photon pairs is 15MHz which matches the typical atomic memo...

The Leggett-Garg inequality (LGI) distinguishes nonmacrorealistic channels from macrorealistic ones by constraining the experimental outcomes of underlying system. In this work, we propose a class which, initially, cannot violate LGI (in form temporal Bell inequality) but can it after application stochastic pre- and post- operations (SPPOs). As proof-of-principle experiment, demonstrate in an a...

Non-classical probability is the underlying feature of quantum mechanics. The emergence Bell-CHSH non-locality [We stress that CHSH inequality (Clauser et al. in Phys. Rev. Lett. 23(15):880, 1969) more general and reduces to Bell (Bell Physics 1:195, 1964) under assumption perfect correlations between observables] for bipartite systems linear entanglement inequalities two-qubit has been shown A...