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arXiv · 1905.03459

Lorentz-invariant mass and entanglement of biphoton states

S. V. Vintskevich·D. A. Grigoriev·M. V. Fedorov
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Abstract

The concept of the Lorentz-invariant mass of a group of particles is shown to be applicable to biphoton states formed in the process of spontaneous parametric down conversion. The conditions are found when the Lorentz-invariant mass is related directly with (proportional to) the Schmidt parameter $K\gg 1$ determining a high degree of entanglement of a biphoton state with respect to transverse wave vectors of emitted photons.

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S. V. Vintskevich, D. A. Grigoriev, M. V. Fedorov. 2019-05-09. Lorentz-invariant mass and entanglement of biphoton states. https://doi.org/10.1088/1612-202x%2Fab1dde

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