Compensating the Noise of a Communication Channel via Asymmetric Encoding of Quantum Information

TL;DR

This paper introduces an asymmetric quantum encoding method that leverages the Bennett 1992 protocol to monitor and actively correct noise in quantum communication channels without additional reference signals or transmission interruptions.

Contribution

It presents a novel approach for noise compensation in quantum channels using asymmetric state preparation inspired by the Bennett 1992 protocol.

Findings

Effective phase drift correction without reference pulses

Active noise compensation based on conclusive/inconclusive count ratios

No need for public data exchanges during quantum transmission

Abstract

An asymmetric preparation of the quantum states sent through a noisy channel can enable a new way to monitor and actively compensate the channel noise. The paradigm of such an asymmetric treatment of quantum information is the Bennett 1992 protocol, in which the ratio between conclusive and inconclusive counts is in direct connection with the channel noise. Using this protocol as a guiding example, we show how to correct the phase drift of a communication channel without using reference pulses, interruptions of the quantum transmission or public data exchanges.