Microwave Manipulation of Atomic Energy Levels Mark Gordon - - PowerPoint PPT Presentation

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Sep 17, 2022 304 likes •466 views

Microwave Manipulation of Atomic Energy Levels Mark Gordon Department of Physics University of Virginia Coupling of energy levels s p Energy s Excite electrons using laser Coupling of energy levels s Microwave field at resonant

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Microwave Manipulation of Atomic Energy Levels

Mark Gordon Department of Physics University of Virginia

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s’ p s Energy Coupling of energy levels Excite electrons using laser

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s’ s Energy Microwave field at resonant frequency - “dressing field” Coupling of energy levels p Excite electrons using laser (Width of separation dependent on strength

f field)

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s Energy Look for resonances with second microwave field - “probe field” Coupling of energy levels s’ Microwave field at resonant frequency - “dressing field” p Excite electrons using laser

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s’ p Purely linear polarization s’ and p split in two

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s’ p

+1/2

With circular polarization s’ and p split in four

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Time resolved field ionization signals Field ramp Time Atom with lower energy state Voltage Atom with higher energy state

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A timeline of one cycle of the experiment Laser pulse Dressing field Probe field Field ionization ramp Time

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Many thanks go to the generous donors to the College Science Scholars program who make these summer research awards possible: Charles Henry Leach, II, Foundation, Mr. Steve Van Besien; Entigence Corporation; Lois A. Fitton & W. Christopher Draper, Jr.; Sharon B. Parente & John W. Risner; The Jefferson Trust; Robert Atkinson; Dean’s discretionary gifts Special thanks to my mentor, Dr. Thomas Gallagher