Imperial College London

DrSidneyWright

Faculty of Natural SciencesDepartment of Physics

Research Associate
 
 
 
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Contact

 

s.wright15

 
 
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Location

 

Blackett LaboratorySouth Kensington Campus

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Summary

 

Summary

I work at the Centre for Cold Matter (CCM) under Professor Michael Tarbutt and Professor Ben Sauer. My research focusses on cooling atoms and molecules to low temperatures, and applying their favourable properties to precision measurements in fundamental physics.

For my doctoral thesis work, I made the first demonstration of a new microwave cavity trap, cooling lithium atoms to the ultracold regime and loading them into the cavity. The trap offers unique advantages for polar molecules, trapping the absolute ground state with a depth approaching one kelvin and a volume of about 10 cubic centimeters. These properties are suitable for direct loading from current sources of slow molecules, and therefore open up new experimental opportunities.

Since September 2019 I have worked in the team measuring the electron’s electric dipole moment (eEDM) with YbF molecules. A non-zero eEDM breaks time-reversal symmetry, and this symmetry is intricately linked to matter-antimatter symmetry through CPT invariance. Many extensions to the Standard Model of particle physics, which attempt to explain our observation that the universe is mostly matter, predict a large, non-zero eEDM. Constraining and ruling out these theories by experiment has become the focus of several groups around the world. At the CCM we use our expertise in manipulating and cooling molecules to take advantage of their enhanced sensitivity for eEDM measurements.

Selected Publications

Journal Articles

Ho C, Devlin JA, Rabey I, et al., 2020, New techniques for a measurement of the electron's electric dipole moment, New Journal of Physics, Vol:22, ISSN:1367-2630

Wright S, Wall T, Tarbutt M, Microwave trap for atoms and molecules, Physical Review Research, ISSN:2643-1564

Kellerer A, Wright S, Lacour S, 2017, Coherence and information in a fiber interferometer, American Journal of Physics, Vol:85, Pages:6-13

More Publications