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Updated: Dec 29, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
The signal of ill-defined CPT weakening entanglement in the system
José Bernabéu1, Francisco J Botella1, Nick E Mavromatos1,2
11Departament de Física Teòrica, IFIC, Universitat de València-CSIC, 46100 Burjassot, Spain.
Abstract:
In the presence of quantum-gravity fluctuations (space-time foam), the CPT operator may be ill-defined. Its perturbative treatment leads to a modification of the Einstein-Podolsky-Rosen correlation of the neutral meson system by adding an entanglement-weakening term of the wrong exchange symmetry, the -effect. In the current paper we identify how to probe the complex in the entangled -system using the flavour (f)-CP(g) eigenstate decay channels: the connection between the intensities for the two time-ordered decays (f, g) and (g, f) is lost. Appropriate observables are constructed allowing independent experimental determinations of Re( ) and Im( ), disentangled from CPT violation in the evolution Hamiltonian Re( ) and Im( ). tensions for both Re( ) and Im( ) are shown to be uncorrelated.
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