Atomic Physics
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Non-recollisional excitation confirmed in multi-electron ionization of krypton
This study provides the first experimental validation of non-recollisional electronic excitation during strong field ionization. Utilizing 50 femtosecond circularly polarized laser pulses on krypton, the researchers observed a high degree of agreement with theoretical predictions. This mechanism is …
PGC Achieves BEC in Micrometer Traps via Machine Learning Optimization
Polarization gradient cooling (PGC) in a corrugated micrometer-sized optical dipole trap produces a small Bose-Einstein condensate of ~250 87Rb atoms without evaporative cooling. Machine learning optimization increased atom number by 5x and decreased temperature by 2.5x, yielding nearly two orders o…