Single-Photon Superradiance in Cold Atoms

Abstract

The interaction of an ensemble of atoms with common vacuum modes may lead to an enhanced emission into these modes. This phenomenon, known as superradiance, highlights the coherent nature of spontaneous emission, resulting in macroscopic entangled states in mundane situations. The complexity of the typical observations of superradiance, however, masks its quantum nature, allowing alternative classical interpretations. Here we stress how this picture changed with the implementation ten years ago of a new process for single-photon generation from atomic ensembles. We present then the last piece of evidence for the superradiant nature of such process, reporting the observation of an accelerated emission of the photon with a rate that may be tuned by controllably changing the number of atoms in the ensemble. Such investigation paves the way to a new, bottom-up approach to the study of superradiance.

8 pages, 9 figures

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Cited by in corpus (39)

• Subradiance in a Large Cloud of Cold Atoms
• Superradiance in a Large and Dilute Cloud of Cold Atoms in the Linear-Optics Regime
• Observation of single-photon superradiance and the cooperative Lamb shift in an extended sample of cold atoms
• Enhanced Quantum Interface with Collective Ion-Cavity Coupling
• Subnatural-linewidth biphotons from a Doppler-broadened hot atomic vapor cell
• Light interacting with atomic ensembles: collective, cooperative and mesoscopic effects
• Super-Coulombic atom-atom interactions in hyperbolic media
• Collective Dipole-Dipole Interactions in an Atomic Array
• Generation of single photons with highly tunable wave shape from a cold atomic quantum memory
• Subradiance-protected excitation transport
• Emergent dark states from superradiant dynamics in multilevel atoms in a cavity
• Extremely subradiant states in a periodic one-dimensional atomic array
• Polaritonic modes in a dense cloud of atoms
• Angular distribution of single photon superradiance in a dilute and cold atomic ensemble
• Role of disorder in super- and subradiance of cold atomic clouds
• Cooperative spontaneous emission from indistinguishable atoms in arbitrary motional quantum states
• Simulating superradiance from higher-order-intensity-correlation measurements: Single atoms
• Quantum effects in the cooperative scattering of light by atomic clouds
• Observation of nonclassical correlations in biphotons generated from an ensemble of pure two-level atoms
• Directional superradiance in a driven ultracold atomic gas in free-space
• Generating long-lived entangled states with free-space collective spontaneous emission
• Experimental Fock-State Superradiance
• Frequency tuning of a triply-resonant whispering-gallery mode resonator to MHz wide transitions for proposed quantum repeater schemes
• Collective effects in the radiation pressure force
• Superradiance of non-Dicke states
• Sensitivity of electromagnetically induced transparency to light-mediated interactions
• Cooperative spontaneous emission via renormalization approach: Classical versus semi-classical effects
• Collective emission of photons from dense, dipole-dipole interacting atomic ensembles
• $N$ Scaling of Large-Sample Collective Decay in Inhomogeneous Ensembles
• Decoherence by spontaneous emission: a single-atom analog of superradiance
• Dicke superradiance as a nondestructive probe for quantum quenches in optical lattices
• Classical versus quantum intensity-field correlations of scattered light from extended cold atomic clouds
• Superradiance and anomalous hyperfine splitting in inhomogeneous ensembles
• Dicke superradiance as nondestructive probe for the state of atoms in optical lattices
• Cooperative atomic emission from a line of atoms interacting with a resonant plane surface
• Size-Reduction of Rydberg collective excited states in cold atomic system
• Fock-state superradiance in a cold atomic ensemble
• Cooperative effects in dense cold atomic gases including magnetic dipole interactions
• Superradiant Emission of Ultra-Bright Photon Pairs in Doppler-Broadened Atomic Ensemble