Photon polarization entanglement induced by biexciton: experimental evidence for violation of Bell's inequality

Abstract

We have investigated the polarization entanglement between photon pairs generated from a biexciton in a CuCl single crystal via resonant hyper parametric scattering. The pulses of a high repetition pump are seen to provide improved statistical accuracy and the ability to test Bell's inequality. Our results clearly violate the inequality and thus manifest the quantum entanglement and nonlocality of the photon pairs. We also analyzed the quantum state of our photon pairs using quantum state tomography.

4 pages, 5 figures

References in corpus (2)

• Entangled Photon Pairs from Semiconductor Quantum Dots
• Improved fidelity of triggered entangled photons from single quantum dots

Cited by in corpus (18)

• On-demand generation of indistinguishable polarization-entangled photon pairs
• Symmetric quantum dots as efficient sources of highly entangled photons
• Evolution of entanglement within classical light states
• Coherent transfer of light polarization to electron spins in a semiconductor
• Generation of hyper-entangled photon pairs in coupled microcavities
• Bunching visibility for correlated photons from single GaAs quantum dots
• Emergence of entanglement from a noisy environment: The case of polaritons
• Current-injection quantum-entangled-pair emitter using droplet epitaxial quantum dots on GaAs(111)A
• Broadband-laser-diode pumped PPKTP-Sagnac polarization-entangled photon source
• Entangled-photon generation in nano-to-bulk crossover regime
• Entangling photons by means of the nonlinear response of quantum wells to an ultrashort pulse
• Anisotropic Purity of Entangled Photons From Cooper Pairs in Heterostructures
• Theoretical framework of entangled-photon generation from biexcitons in nano-to-bulk crossover regime with planar geometry
• How Quantum is the Classical World?
• Quantitative characterization of highly efficient correlated photon-pair source using biexciton resonance
• Evaluation of two-photon polarization density matrix of polarization-entangled photon-pairs generated through biexciton resonant hyper-parametric scattering
• Evaluation of quantum entanglement state between photoelectron spin and emitted photon polarization in spin and polarization resolved XEPECS of $\mathrm{T}{\mathrm{i}}_2{\mathrm{O}}_3$
• Temperature Dependence of Violation of Bell's Inequality in Coupled Quantum Dots in a Microcavity