Controlling and engineering a quantum state in a multi-qubit system employing the quantum Zeno effect

TL;DR

This paper demonstrates how the quantum Zeno effect can be used to control and engineer quantum states in multi-qubit systems, enhancing quantum computing reliability by suppressing undesired transitions.

Contribution

It introduces a method to utilize the quantum Zeno effect for state control in multi-qubit systems within surface code architectures, showing practical implementation strategies.

Findings

Quantum Zeno effect can suppress undesired quantum transitions.

Tuning measurement frequency enables targeted state preparation.

Effective control demonstrated in both single and two-qubit systems.

Abstract

Controlling quantum jumps is crucial for reliable quantum computing. In this work, we demonstrate how the quantum Zeno effect can be applied to a two qubit system interacting with an ancilla which is a component of surface code architecture used to control undesired transitions. Further, we show that by designing the interaction and tuning measurement frequency, the quantum Zeno effect can be used to achieve the desired target state in both single-qubit and two qubit systems.