Pursuit and Review of Magnetic Resonance Imaging (MRI) based Quantum Computing -- Qubit Generation, Spin Purification, Tailored RF Pulses and MRI Sequences for Quantum Computing

TL;DR

This paper introduces a novel MRI-based method for quantum bit generation using water proton NMR, leveraging MRI gradient techniques and pulse sequences to create localized qubits at room temperature, integrating MRI hardware with quantum computing.

Contribution

It presents a new MRI-based approach for qubit generation that utilizes gradient methods and MRI pulse sequences, enabling room-temperature quantum computing with existing MRI technology.

Findings

Enables qubit generation using MRI gradient techniques.

Allows operation at room temperature with standard MRI hardware.

Utilizes MRI pulse sequences for advanced quantum state control.

Abstract

We propose a novel MRI (Magnetic Resonance Imaging) technique based quantum bit (qubit) generation with water proton NMR (1H-NMR), distinct from previously proposed NMR chemical shift or spectroscopic techniques based qubit generation. We briefly review prior NMR-based techniques in the context of quantum computing, focusing on MRI-related methods. The proposed technique utilizes MRI-based gradient methods combined with set of local reverse gradients to generate multiple qubits. This configuration enables the creation of multiple localized constant magnetic fields, each producing a qubit with highly homogeneous field, therefore, a unique single frequency. The RF electronics and signal processing techniques are analogous to those used in conventional MRI scanners, allowing operation at room temperature, with the exception of the main magnet, which remains identical to that of standard MRI systems. Additional advantages of this method include the ability to leverage the extensive pulse techniques and hardware developed for MRI scanners over the past 50 years. Furthermore, the wide array of MRI pulse sequences enables highly sophisticated signal processing for quantum computing applications, such as the spin purification.