Quantum computation with longlived Rydberg-Landau atoms featuring suppressed ionization by the Magnetic Cage

TL;DR

This paper introduces Rydberg-Landau states created under strong magnetic fields that exhibit extended lifetimes and suppressed ionization, enabling more robust and complex quantum computing with atomic qubits.

Contribution

The study presents a novel method to create long-lived Rydberg-Landau states using magnetic confinement, improving qubit stability and interaction control for quantum computing.

Findings

Rydberg-Landau states have significantly extended lifetimes.

Magnetic confinement prevents ionization under intense laser fields.

Optimal states identified for high-fidelity quantum operations.

Abstract

Atomic processing units require robust entanglement between individual qubits, typically achieved via excitation to highly interacting Rydberg states. However, short Rydberg lifetimes and ionization risks limit the quantum volume score of the atomic processing units. Inspired by Landau resonances in alkaline atoms, we introduce Rydberg-Landau (rLandau) states created under a strong magnetic field (2.5 Tesla). These states exhibit significantly extended lifetimes and a magnetic confinement mechanism that prevents ionization, even under intense laser fields. We analyze their wavefunctions, excitation dynamics, dipole transition rules, lifetimes, and interactions, identifying states optimal for high-fidelity quantum operations. This approach simplifies the coherent excitation of long-lived, strongly interacting rLandau circular states akin to Coulombic counterparts, enabling deeper and more complex quantum algorithms.