Spatially-resolved control of fictitious magnetic fields in a cold atomic ensemble
arXiv:1712.07747 · doi:10.1364/OL.43.001147
Abstract
Effective and unrestricted engineering of atom-photon interactions requires precise spatially-resolved control of light beams. The significant potential of such manipulations lies in a set of disciplines ranging from solid state to atomic physics. Here we use a Zeeman-like ac-Stark shift of a shaped laser beam to perform rotations of spins with spatial resolution in a large ensemble of cold rubidium atoms. We show that inhomogeneities of light intensity are the main source of dephasing and thus decoherence, yet with proper beam shaping this deleterious effect is strongly mitigated allowing rotations of 15 rad within one spin-precession lifetime. Finally, as a particular example of a complex manipulation enabled by our scheme, we demonstrate a range of collapse-and-revival behaviours of a free-induction decay signal by imprinting comb-like patterns on the atomic ensemble.
4 pages, 4 figures
References in corpus (9)
- Ultrafast photo-magnetic recording in transparent medium
- High-Resolution Magnetometry with a Spinor Bose-Einstein Condensate
- Wavevector multiplexed quantum memory via spatially-resolved single-photon detection
- Hamiltonian Design in Atom-Light Interactions with Rubidium Ensembles: A Quantum Information Toolbox
- Fictitious magnetic field gradients in optical microtraps as an experimental tool for interrogating and manipulating cold atoms
- Coherent precession of an individual 5/2 spin
- Interference and nonlinear properties of four-wave-mixing resonances in thermal vapor: Analytical results and experimental verification
- Light-shift modulated photon-echo
- Phase matching alters spatial multiphoton processes in dense atomic ensembles
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- Massively-multiplexed generation of Bell-type entanglement using a quantum memory
- Spatial spin-wave modulator for quantum memory assisted adaptive measurements
- Microchannel plate cross-talk mitigation for spatial autocorrelation measurements
- Light-induced fictitious magnetic fields for quantum storage in cold atomic ensembles
- Quantum-router: Storing and redirecting light at the photon level