Abrupt and gradual changes of information through the Kane solid state computer

TL;DR

This paper investigates how information susceptibility in the Kane solid state computer depends on field and system parameters, revealing conditions for abrupt or gradual information decay and methods to optimize secure communication.

Contribution

It demonstrates the influence of field polarization and initial states on information decay, offering strategies to enhance communication stability in Kane solid state computers.

Findings

Purity and fidelity decrease abruptly or gradually based on polarization alignment.

Certain initial states allow lossless information transmission.

Controlling device parameters can prolong secure communication.

Abstract

The susceptibility of the transformed information to the filed and system parameters is investigated for the Kane solid state computer. It has been shown, that the field polarization and the initial state of the system play the central roles on the abrupt and gradual quench of the purity and the fidelity. If the field and the initial state are in different polarizations, then the purity and the fidelity decrease abruptly, while for the common polarization the decay is gradual and smooth. For some class of initial states one can send the information without any loss. Therefore, by controlling on the devices one can increase the time of safe communication, reduce the amount of exchange information between the state and its environment and minimize the purity decrease rate.