Einstein-Podolsky-Rosen paradox in twin images

Abstract

Spatially entangled twin photons provide both promising resources for modern quantum information protocols, because of the high dimensionality of transverse entanglement, and a test of the Einstein-Podolsky-Rosen(EPR) paradox in its original form of position versus impulsion. Usually, photons in temporal coincidence are selected and their positions recorded, resulting in a priori assumptions on their spatio-temporal behavior. Here, we record on two separate electron-multiplying charge coupled devices (EMCCD) cameras twin images of the entire flux of spontaneous down-conversion. This ensures a strict equivalence between the subsystems corresponding to the detection of either position (image or near-field plane) or momentum (Fourier or far-field plane). We report then highest degree of paradox ever reported and show that this degree corresponds to the number of independent degrees of freedom or resolution cells, of the images.

References in corpus (7)

• Experimental realization of sub-shot-noise quantum imaging
• Imaging high-dimensional spatial entanglement with a camera
• Anisotropically high entanglement of biphotons generated in spontaneous parametric down conversion
• Realization of the purely spatial Einstein-Podolsky-Rosen paradox in full-field images of spontaneous parametric down conversion
• Continuous variable quantum computation with spatial degrees of freedom of photons
• Multi-imaging and Bayesian estimation for photon counting with EMCCD's
• Propagation of transverse intensity correlations of a two-photon state

Cited by in corpus (11)

• Entanglement Certification $-$ From Theory to Experiment
• Wavevector multiplexed quantum memory via spatially-resolved single-photon detection
• Einstein-Podolsky-Rosen Entanglement of Narrowband Photons from Cold Atoms
• Temporal ghost imaging with twin photons
• Coincidence detection of spatially correlated photon pairs with a monolithic time-resolving detector array
• Einstein-Podolsky-Rosen paradox in a hybrid bipartite system
• Phase and amplitude imaging with quantum correlations through Fourier Ptychography
• Optimising the signal-to-noise ratio in measurement of photon pairs with detector arrays
• Spatial squeezing in bright twin beams generated with four-wave mixing: constraints on characterization with an EMCCD camera
• Balanced homodyne detection with on-off detector systems: Observable nonclassicality criteria
• Subwavelength resolution using the near field of quantum emitters