AI Article Synopsis
- The study explores how adding a weak oscillating field to a system of strongly dressed spins enhances quantum dynamics through low-order harmonic mixing.
- The bichromatic driving induces a static field that allows fine-tuning of atomic responses, leading to effects like spatial triaxial anisotropy in spin coupling and faster spin dynamics.
- Experimental tests on cesium atomic vapor confirm theoretical predictions regarding the behavior of the system when tuned across different frequencies.
Article Abstract
The addition of a weak oscillating field modifying strongly dressed spins enhances and enriches the system quantum dynamics. Through low-order harmonic mixing, the bichromatic driving generates additional rectified static field acting on the spin system. The secondary field allows for a fine tuning of the atomic response and produces effects not accessible with a single dressing field, such as a spatial triaxial anisotropy of the spin coupling constants and acceleration of the spin dynamics. This tuning-dressed configuration introduces an extra handle for the system full engineering in quantum control applications. Tuning amplitude, harmonic content, spatial orientation, and phase relation are control parameters. A theoretical analysis, based on perturbative approach, is experimentally tested by applying a bichromatic radiofrequency field to an optically pumped Cs atomic vapour. The theoretical predictions are precisely confirmed by measurements performed with tuning frequencies up to the third harmonic.
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| http://dx.doi.org/10.1103/PhysRevLett.125.093203 | DOI Listing |
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