Observation of two-beam collective scattering phenomena in a Bose-Einstein condensate

Abstract

New phenomena of collective light scattering are observed when an elongated Bose-Einstein condensate is pumped by two non-interfering beams counterpropagating along its long axis. In the limit of small Rayleigh scattering rates, the presence of a second pump beam suppresses superradiance, whereas at large Rayleigh scattering rates it lowers the effective threshold power for collective light scattering. In the latter regime, the quench dynamics of the two-beam system are oscillatory, compared to monotonic in the single-beam case. In addition, the dependence on power, detuning, and atom number is explored. The observed features of the two-beam system qualitatively agree with the recent prediction of a supersolid crystalline phase of light and matter at large Rayleigh scattering rates [S. Ostermann, F. Piazza, and H. Ritsch, Phys. Rev. X 6, 021026 (2016).]

6 pages, 4 figures

References in corpus (7)

• Cold atoms in cavity-generated dynamical optical potentials
• Supersolid formation in a quantum gas breaking continuous translational symmetry
• Spatial effects in superradiant Rayleigh scattering from Bose-Einstein condensates
• Rayleigh superradiance and dynamic Bragg gratings in an end-pumped Bose-Einstein condensate
• Spectroscopy of Strong-Pulse Superradiance in a Bose-Einstein condensate
• Semi-classical Dynamics of Superradiant Rayleigh Scattering in a Bose-Einstein Condensate
• Probing and characterizing the growth of a crystal of ultracold bosons and light

Cited by in corpus (21)

• An optical lattice with sound
• Feedback-Induced Quantum Phase Transitions Using Weak Measurements
• Supersolid properties of a Bose-Einstein condensate in a ring resonator
• Driven-Dissipative Supersolid in a Ring Cavity
• Observation of a strongly ferromagnetic spinor Bose-Einstein condensate
• Enhanced Superexchange in a Tilted Mott Insulator
• Quantum Simulation of Competing Orders with Fermions in Quantum Optical Lattices
• Observation of Subradiant Atomic Momentum States with Bose-Einstein Condensates in a Recoil Resolving Optical Ring Resonator
• Interaction Spectroscopy of a Two-component Mott Insulator
• Cavity-induced emergent topological spin textures in a Bose Einstein condensate
• Measurement of a ${}^7$Li tune-out wavelength by phase-patterned atom interferometry
• Tuning photon-mediated interactions in a multimode cavity: from supersolid to insulating droplets hosting phononic excitations
• Rapid production of large ${}^7$Li Bose-Einstein condensates using $D_1$ gray molasses
• Cavityless self-organization of ultracold atoms due to the feedback-induced phase transition
• Observation of Light-Induced Dipole-Dipole Forces in Ultracold Atomic Gases
• Superglass formation in an atomic BEC with competing long-range interactions
• Crystalline Phases of Laser-Driven Dipolar Bose-Einstein Condensates
• Quantum Light on Demand
• Laser-painted cavity-mediated interactions in a quantum gas
• Single and entangled atomic systems in thermal bath and the Fulling-Davies-Unruh effect
• Formation of Solitonic Bound State via Light-Matter Interaction