Quantum Zeno effect: a qutrit controlled by a qubit

TL;DR

This paper demonstrates how the quantum Zeno effect can be used to control a three-level quantum system (qutrit) via a qubit, enabling quantum error correction, gate operations, and quantum communication protocols.

Contribution

It introduces a method to employ the quantum Zeno effect for controlling a qutrit with a qubit, facilitating error correction and quantum information processing.

Findings

Quantum Zeno effect enables control of a qutrit via a qubit.

Realization of cNOT gate, dense coding, and teleportation using this method.

Potential to generalize control techniques to higher-dimensional qudits.

Abstract

For a three-level system monitored by an ancilla, we show that quantum Zeno effect can be employed to control quantum jump for error correction. Further, we show that we can realize cNOT gate, and effect dense coding and teleportation. We believe that this work paves the way to generalize the control of a qudit.