Collective excitation of Rydberg-atom ensembles beyond the $\sqrt{N}$ enhancement

Abstract

In an ensemble of laser-driven atoms involving strongly interacting Rydberg states, the excitation probability is usually strongly suppressed. In contrast, here we identify a regime in which the steady-state Rydberg excited fraction is enhanced by the interaction. This effect is associated with the build-up of many-body coherences, induced by coherent multi-photon excitations between collective states. The excitation enhancement should be observable under currently-existing experimental conditions, and may serve as a direct probe for the presence of coherent multi-photon dynamics involving collective quantum states.

arXiv comment7 pages, 4 figures

References in corpus (29)

• Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
• Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles
• Observation of Rydberg blockade between two atoms
• Observation of collective excitation of two individual atoms in the Rydberg blockade regime
• Strong atom-field coupling for Bose-Einstein condensates in an optical cavity on a chip
• Strong Coupling of a Spin Ensemble to a Superconducting Resonator
• Cavity QED with a Bose-Einstein condensate
• Observation of mesoscopic crystalline structures in a two-dimensional Rydberg gas
• Coherent coupling of a superconducting flux-qubit to an electron spin ensemble in diamond
• Evidence for coherent collective Rydberg excitation in the strong blockade regime
• Cavity QED with magnetically coupled collective spin states
• Storage and control of optical photons using Rydberg polaritons
• Electromagnetically induced transparency with Rydberg atoms
• Observation of coherent many-body Rabi oscillations
• Collective quantum jumps of Rydberg atoms
• Full counting statistics and phase diagram of a dissipative Rydberg gas
• Full counting statistics of laser excited Rydberg aggregates in a one-dimensional geometry
• Demonstration of a strong Rydberg blockade in three-atom systems with anisotropic interactions
• Out-of-equilibrium structures in strongly interacting Rydberg gases with dissipation
• Electromagnetically Induced Transparency in strongly interacting Rydberg Gases
• Sub-Poissonian statistics of Rydberg-interacting dark-state polaritons
• Cavity-Enhanced Long-Distance Coupling of an Atomic Ensemble to a Micromechanical Membrane
• Opto-Nanomechanics Strongly Coupled to a Rydberg Superatom: Coherent vs. Incoherent Dynamics
• Coherent versus incoherent excitation dynamics in dissipative many-body Rydberg systems
• A hybrid model for Rydberg gases including exact two-body correlations
• Semi-analytical model for nonlinear light propagation in strongly interacting Rydberg gases
• Non-linear absorption and density dependent dephasing in Rydberg EIT-media
• Spatiotemporal dynamics of quantum jumps with Rydberg atoms
• Dynamics and equilibration of Rydberg excitations in dissipative atomic ensembles

Cited by in corpus (17)

• Correlated Exciton Transport in Rydberg-Dressed-Atom Spin Chains
• Effective dynamics of strongly dissipative Rydberg gases
• Demonstration of the Jaynes-Cummings ladder with Rydberg-dressed atoms
• Measurement of van-der-Waals interaction by atom trajectory imaging
• Optimal control of Rydberg lattice gases
• Simulating superradiance from higher-order-intensity-correlation measurements: Single atoms
• Spectral shift and dephasing of electromagnetically induced transparency in an interacting Rydberg gas
• Two-body interactions and decay of three-level Rydberg-dressed atoms
• Interacting photon pulses in Rydberg medium
• De-excitation spectroscopy of strongly interacting Rydberg gases
• Many-body radiative decay in strongly interacting Rydberg ensembles
• Quantum signature for laser-driven correlated excitation of Rydberg atoms
• Nonlinear absorption in interacting Rydberg electromagnetically-induced-transparency spectra on two-photon resonance
• Anomalous excitation enhancement with Rydberg-dressed atoms
• Properties of collective Rabi oscillations with two Rydberg atoms
• Deterministic entanglement generation between a pair of atoms on different Rydberg states via chirped adiabatic passage
• Deterministic facilitated excitation of the weakly-driven atom in heteronuclear Rydberg atom pairs beyond antiblockade