Schwinger effect of Gaussian correlations in constant electric fields

TL;DR

This paper investigates how constant electric fields induce the Schwinger effect on Gaussian quantum correlations, such as entanglement and discord, in continuous-variable systems, highlighting differences between fermionic and bosonic fields.

Contribution

It provides a comparative analysis of the Schwinger effect on Gaussian correlations in fermionic and bosonic fields, including correlation redistribution and conservation.

Findings

Schwinger effect reduces Gaussian correlations in both fermionic and bosonic fields.

Differences observed in correlation behavior between fermion-fermion and qubit-bosonic systems.

Correlation redistribution and conservation under the Schwinger effect are characterized.

Abstract

We study the Schwinger effect of Gaussian correlations (quantum entanglement, discord and mutual information) of the continuous-variable two-mode squeezed states shared by Alice and Bob, paying special attention to the difference of the Schwinger effect of correlations between modes of fermion-fermion and qubit-bosonic fields studied previously. We also study the redistribution and conservativeness of the correlations under the Schwinger effect.