Quantifying the impact of state mixing on the Rydberg excitation blockade

Abstract

The Rydberg excitation blockade has been at the heart of an impressive array of recent achievements; however, state-mixing interactions can compromise its efficiency. When ultracold atoms are excited to Rydberg states near Förster resonance, up to $\sim 50\%$ of atoms can be found in dipole coupled product states within tens of ns after excitation. There has been disagreement in the literature regarding the mechanism by which this mixing occurs. We use state-selective field ionization spectroscopy to measure, on a shot-by-shot basis, the distribution of Rydberg states populated during narrowband laser excitation. Our method allows us to both determine the number of additional Rydberg excitations added by each mixing event, and to quantify the extent to which state mixing ``breaks'' the blockade. For excitation of ultracold rubidium atoms to $n{D}_{5/2}$ states, we find that the mixing is consistent with a three-body process, except near exact Förster resonance.

References in corpus (33)

• Quantum information with Rydberg atoms
• Probing many-body dynamics on a 51-atom quantum simulator
• Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles
• Fast quantum gates for neutral atoms
• Observation of Rydberg blockade between two atoms
• Demonstration of a neutral atom controlled-NOT quantum gate
• Observation of collective excitation of two individual atoms in the Rydberg blockade regime
• Realizing quantum Ising models in tunable two-dimensional arrays of single Rydberg atoms
• Entanglement of two individual neutral atoms using Rydberg blockade
• Single-Spin Addressing in an Atomic Mott Insulator
• Local Blockade of Rydberg Excitation in an Ultracold Gas
• Observation of mesoscopic crystalline structures in a two-dimensional Rydberg gas
• Cooperative optical non-linearity due to dipolar interactions in an ultra-cold Rydberg ensemble
• Cooperative atom-light interaction in a blockaded Rydberg ensemble
• ARC: An open-source library for calculating properties of alkali Rydberg atoms
• Storage and control of optical photons using Rydberg polaritons
• Consequences of Zeeman Degeneracy for van der Waals Blockade between Rydberg Atoms
• Single-Photon Transistor Using a Förster Resonance
• Single-Photon Switch based on Rydberg Blockade
• Direct measurement of the van der Waals interaction between two Rydberg atoms
• Observation of coherent many-body Rabi oscillations
• Coherent Excitation of Rydberg Atoms in Thermal Vapor Microcells
• Evidence of antiblockade in an ultracold Rydberg gas
• Observing the space- and time-dependent growth of correlations in dynamically tuned synthetic Ising antiferromagnets
• Tutorial: Calculation of Rydberg interaction potentials
• Universal gates based on targeted phase shifts in a 3D neutral atom array
• Strongly correlated growth of Rydberg aggregates in a vapor cell
• Demonstration of a strong Rydberg blockade in three-atom systems with anisotropic interactions
• Coherent addressing of individual neutral atoms in a 3D optical lattice
• Sub-Poissonian statistics of Rydberg-interacting dark-state polaritons
• Zeros of Rydberg-Rydberg Foster Interactions
• Atomic Fock State Preparation Using Rydberg Blockade
• Accurate mapping of multilevel Rydberg atoms on interacting spin-$1/2$ particles for the quantum simulation of Ising models