Degenerate Local-dimension-invariant Stabilizer Codes and an Alternative Bound for the Distance Preservation Condition

TL;DR

This paper explores how degenerate stabilizer codes for qudit systems can maintain their error-correcting distance at large local dimensions, providing a new bound that could aid the development of error-corrected qudit quantum computers.

Contribution

It introduces a novel bound for the local dimension needed to preserve code distance in local-dimension-invariant stabilizer codes, extending known code properties to qudit systems.

Findings

Degenerate stabilizer codes can preserve their distance at large local dimensions.

A new bound on local dimension for distance preservation in these codes is established.

Results could facilitate the development of error-corrected qudit quantum computers.

Abstract

One hurdle to performing reliable quantum computations is overcoming noise. One possibility is to reduce the number of particles needing to be protected from noise and instead use systems with more states, so called qudit quantum computers. In this paper we show that codes for these systems can be derived from already known codes, and in particular that degenerate stabilizer codes can have their distance also promised upon sufficiently large local-dimension, as well as a new bound on the local-dimension required to preserve the distance of local-dimension-invariant codes, which is a result which could prove to be useful for error-corrected qudit quantum computers.