Spectrally Resolved Quantum Tomography of Polarization Entangled States
Dmitry A. Kalashnikov, Leonid A. Krivitsky
TL;DR
This paper investigates broadband polarization entangled states generated by SPDC, revealing their complex structure and demonstrating that compensation techniques can homogenize their entanglement properties.
Contribution
It introduces a complete quantum polarization tomography protocol for arbitrary frequency and angular modes, uncovering the complex structure of entangled states within the SPDC line width.
Findings
Complex structure of non-degenerate polarization entangled states revealed
Simultaneous compensation homogenizes polarization entanglement
Broadband entangled states characterized within the SPDC line width
Abstract
We study broadband polarization entangled states generated within the line width of type-II Spontaneous Parametric Down Conversion (SPDC). Applying a complete quantum polarization tomography protocol at arbitrary combination of frequency and angular sideband modes we reveal a complex structure of non-degenerate non-collinear polarization entangled states generated within the SPDC line width. It is demonstrated that simultaneous compensation of longitudinal and transverse walk off leads to homogenizing the structure of polarization entanglement.
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