Vortical Quantum Memory

Abstract

Quantum memory is a crucial component of a quantum information processor, just like a classical memory is a necessary ingredient of a conventional computer. Moreover, quantum memory of light would serve as a quantum repeater needed for quantum communication networks. Here we propose to realize the quantum memory coupled to magnetic modes of electromagnetic radiation (e.g. those found in cavities and optical fibers) using vortices in Quantum Hall systems. We describe the response to an external magnetic mode as a quench, and find that it sets an oscillation between vortices and antivortices, with the period controlled by the amplitude of the magnetic mode, and the phase locked to the phase of the magnetic mode. We support our proposal by real-time Hamiltonian field theory simulations.

9 pages, 8 figures

References in corpus (8)

• Classification of topological insulators and superconductors in three spatial dimensions
• Topological Field Theory of Time-Reversal Invariant Insulators
• Observation of phononic helical edge states in a mechanical 'topological insulator'
• Experimental demonstration of quantum memory for light
• The space group classification of topological band insulators
• A Single-Atom Quantum Memory
• Ubiquity of zeros of Loschmidt amplitude for mixed states in different physical processes and their implications
• Reversal of the circulation of a vortex by quantum tunneling in trapped Bose systems