Implementing a Noise Protected Logical Qubit in Methyl Groups via Microwave Irradiation

TL;DR

This paper proposes a method to encode a logical qubit in a methyl group’s noise-protected subspace using microwave irradiation, leveraging symmetry correlations for quantum information protection.

Contribution

It introduces a novel approach to encode and manipulate a logical qubit in methyl groups by exploiting symmetry and electric dipole interactions with microwaves.

Findings

Theoretical analysis of symmetry correlations in methyl groups.

Proposal for microwave-based control of logical qubits.

Potential for noise-protected quantum information processing.

Abstract

We propose a proof-of-principle experiment to encode one logical qubit in noise protected subspace of three identical spins in a methyl group. The symmetry analysis of the wavefunction shows that this fermionic system exhibits a symmetry correlation between the spatial degree of freedom and the spin degree of freedom. We show that one can use this correlation to populate the noiseless subsystem by relying on the interaction between the electric dipole moment of the methyl group with a circularly polarized microwave field. Logical gates are implemented by controlling both the intensity and phase of the applied field.