Quantum information masking of an arbitrary qudit can be realized in multipartite lower dimensional systems

TL;DR

This paper demonstrates that quantum information masking for any qudit can be achieved in multipartite systems with lower local dimensions, revealing rich quantum correlations and potential security applications.

Contribution

It provides a new scheme for masking arbitrary qudit states in multipartite systems with lower local dimensions, surpassing previous bounds.

Findings

All k-level quantum states can be masked into m-qudit systems with m > 4 and local dimension d < k.

The masking process is illustrated with explicit controlled operations.

The scheme highlights the abundance of quantum correlations in multipartite systems.

Abstract

Quantum information masking is a protocol that hides the original quantum information from subsystems and spreads it over quantum correlation, which is available to multipartite except bipartite systems. In this work, we explicitly study the quantum information masking in multipartite scenario and prove that all the k-level quantum states can be masked into a m-qudit systems (m > 4) whose local dimension d < k and the upper bound of k is tighter than the quantum Singleton bound. In order to observe the masking process intuitively, explicitly controlled operations are provided. Our scheme well demonstrates the abundance of quantum correlation between multipartite quantum system and has potential application in the security of quantum information processing.