Quantum ghost polarimetry with entangled photons

Abstract

The theory of the formation of polarization ghost images in biphoton light of spontaneous parametric scattering is developed. On the basis of the developed theory, the quantum ghost polarimetry concept has been suggested, which makes it possible to obtain two-dimensional maps of the polarization properties of objects by measuring a set of correlation functions obtained in various polarization states of photons. For objects with linear dichroism, a complete set of measurement states is found, which allows for obtaining the maps of the distributions of absorption, value, and azimuth of anisotropy.

Visible–Telecom Photon Pair Source Based on a Photonic-Crystal Fiber under Continuous-Wave Pumping

“…Photon pairs generated at the output of the fiber are described as a biphoton state [30] (3) where |ω s , ω i  is the state of a photon pair and F(ω s , ω i ) is the joint spectral amplitude; the absolute value of χ (3) ω + ω = ω…”

“…Photon pairs (biphotons) are constitute a two-photon state of light with a high degree of nonclassical correlations between, e.g., their detection times and energies of photons in a pair [1]. Due to these properties, sources of photon pairs provide a reliable foundation for the development of new fields of quantum technologies including quantum visualization [2,3], quantum optical coherence tomography [4], quantum spectroscopy and nonlinear microscopy [5,6], and optical quantum memory and quantum communications [7,8].…”

Nonlocal quantum differentiation between polarization objects using entanglement

“…[19][20][21] Particular attention has been attracted by the possibility of nonlocal measurement configurations with the purpose of completely remote sample characterization, which has been already demonstrated in several configurations using classical and quantum correlations. [22][23][24][25][26] Recently, we have developed a theoretical model aiming at coincidence-based discrimination of polarization objects out of a predefined set, where the number of projective measurements for sample identification is significantly reduced and which can be performed remotely by employing polarization-entangled photon pairs. 27 This measurement approach can be implemented with the optical arrangement depicted in Fig.…”