Effects of control fields on pair creation and vacuum information transmission

Abstract

The effects of control fields on the energy spectra of particle pairs created from vacuum, the pair yield, and the transmission of information by Dirac vacuum modes are investigated using computational quantum field theory. The study reveals that oscillation structures of the energy spectrum are unstable and highly sensitive to the direction, width, and temporal profile of the control fields and can provide a more practical and detailed way to control or optimize the yield of the created particles with a certain energy. The information about the field direction, frequency, and time interval between two laser pulses can also be encoded in the control fields, embodied by vacuum modes, and reflected in the pair creation rate over time. In addition, the receiver and detector in the information transmission device can form a new remote, contactless detector for measuring laser field parameters. These findings may pave the way for future experiments and applications.