title: Photon Entanglement Through Brain Tissue.
abstract: Photon entanglement, the cornerstone of quantum correlations, provides a level of coherence that is not present in classical correlations. Harnessing it by study of its passage through organic matter may offer new possibilities for medical diagnosis technique. In this work, we study the preservation of photon entanglement in polarization, created by spontaneous parametric down-conversion, after one entangled photon propagates through multiphoton-scattering brain tissue slices with different thickness. The Tangle-Entropy (TS) plots show the strong preservation of entanglement of photons propagating in brain tissue. By spatially filtering the ballistic scattering of an entangled photon, we find that its polarization entanglement is preserved and non-locally correlated with its twin in the TS plots. The degree of entanglement correlates better with structure and water content than with sample thickness.
authors.affiliation: Institute for Ultrafast Spectroscopy and Lasers, Department of Physics, The City College of New York, New York, NY 10031, USA.|Department of Biology, The City College of New York, New York, NY, 10031, USA.|Deparment of Chemistry, Columbia University, New York, NY, 10027, USA.
authors.forename: Lingyan
authors.initials: L
authors.lastname: Shi
authors.affiliation: Department of Physics and Astronomy, Colgate University, Hamilton, NY, 13346, USA.
authors.forename: Enrique J
authors.initials: EJ
authors.lastname: Galvez
authors.affiliation: Institute for Ultrafast Spectroscopy and Lasers, Department of Physics, The City College of New York, New York, NY 10031, USA.
authors.forename: Robert R
authors.initials: RR
authors.lastname: Alfano
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism*; D007668:Kidney / Q000378:metabolism; D017785:Photons; D051381:Rats; D014054:Tomography