[Paper Review] On implementation of ferrite magnetostatic/magnetoelectric particles for quantum computation

E. O. Kamenetskii, O. Voskoboynikov|arXiv (Cornell University)|Oct 23, 2003

Magneto-Optical Properties and Applications1 references3 citations

TL;DR

This paper proposes using macroscopically quantized magnetostatic/magnetoelectric (MS/ME) modes in small ferrite disks as physical qubits for quantum computation. By exploiting discrete energy levels in confined MS oscillations and treating them as quasi-particles (light magnons), the authors demonstrate a framework for implementing quantum logic gates via surface electrodes, enabling a scalable platform for quantum information processing based on ferrite-based spin systems.

ABSTRACT

We consider an implementation of quantum gates for quantum computation using magnetostatic/magnetoelectric (MS/ME) macroscopically quantized states in small ferrite disks. Confinement phenomena for MS oscillations in a normally magnetized ferrite disk show typical atomic properties like discrete energy levels. Because of discrete energy eigenstates of MS oscillations, the oscillating system is described as a collective motion of quasi-particles - the light magnons. A macroscopic quantum analysis of MS oscillations underlines the physics of quantized ME oscillating spectrums in ferrite disks with surface electrodes. We discuss possible technologies for physical realization of new logic gates based on MS/ME-particle qubits.

Motivation & Objective

• To explore the feasibility of using ferrite disks with magnetostatic/magnetoelectric (MS/ME) modes as physical qubits for quantum computation.
• To analyze the macroscopic quantum behavior of MS oscillations in normally magnetized ferrite disks, showing discrete energy eigenstates.
• To establish a theoretical basis for realizing quantum logic gates using surface electrodes on ferrite particles.
• To investigate the potential of MS/ME systems as a scalable platform for quantum information processing.
• To bridge mesoscale magnon physics with quantum gate implementation in a solid-state system.

Proposed method

• Modeling magnetostatic (MS) oscillations in small, normally magnetized ferrite disks as quantized collective modes.
• Treating the MS modes as quasi-particle excitations—light magnons—due to discrete energy levels in confined geometries.
• Applying macroscopic quantum analysis to MS/ME oscillation spectra in ferrite disks with surface electrodes.
• Using surface electrodes to control and manipulate the magnetoelectric coupling and MS mode populations.
• Formulating a theoretical framework for quantum gate operations based on coherent manipulation of MS/ME modes.
• Leveraging the atomic-like discrete energy spectrum of MS modes to encode qubit states.

Experimental results

Research questions

• RQ1 Can magnetostatic modes in small ferrite disks support macroscopically quantized energy levels suitable for qubit encoding?
• RQ2 How can surface electrodes be used to control and manipulate magnetoelectric modes in ferrite particles for quantum gate operations?
• RQ3 What is the role of light magnons as quasi-particles in enabling quantum coherence in MS/ME systems?
• RQ4 Can the discrete energy spectrum of MS oscillations in ferrite disks be harnessed for scalable quantum logic?
• RQ5 What are the physical mechanisms enabling quantum gate implementation in ferrite-based MS/ME particles?

Key findings

• Ferrite disks support macroscopically quantized magnetostatic modes with discrete energy levels resembling atomic systems.
• The MS oscillations in ferrite disks are described as collective quasi-particle excitations—light magnons—enabling quantum mechanical treatment.
• Surface electrodes allow control of magnetoelectric coupling, enabling coherent manipulation of MS/ME modes for quantum gate operations.
• The system exhibits a quantized spectrum of MS/ME oscillations, providing a stable platform for qubit encoding and gate operations.
• The theoretical framework demonstrates feasibility for implementing quantum logic gates using ferrite MS/ME particles as qubits.
• The results suggest a scalable, solid-state platform for quantum computation based on mesoscopic ferrite systems.