CQT is a creative partner of the NUS Arts Festival 2017: Brave New World, presented by NUS Centre for the Arts. Sambhavna 2.0, a fusion of classical Indian dance and quantum physics, is taking place on Friday 24 & Saturday 25 March.
Enjoy a magazine-style overview of the year's news for research, events and people
The ten finalists in our festival for quantum-inspired short films are showing at local and international events.
Researchers from CQT and the Technical University of Berlin show that a driven system can maintain coherence
- CQT Talk by Caroline Champenois, Aix-Marseille University and CNRS — 06 Apr, 04:00 PM
CQT Talk by Caroline Champenois, Aix-Marseille University and CNRS
Title: Which RF-trap for laser-cooled ions?
Date/Time: 06 Apr, 04:00 PM
Venue: CQT Level 3 Seminar Room, S15-03-15
Radio-frequency (rf) ion traps are now widely used when the confinement of charged particles with a well controlled environment and motional state is required. The linear quadrupole trap has proven to be a very relevant choice for experiments involving laser spectroscopy and/or laser cooling like the one dedicated to optical frequency metrology, quantum information processing or to the study of fundamental concept related to phase transition. On the other hand, linear multipole traps (traps with a number of electrodes larger than 4) are the chosen tool for molecular spectroscopy, reactive collisions and microwave frequency metrology.
We have designed a trap in the purpose of comparing the equilibrium properties and the transport of laser cooled ions in a linear quadrupolar trap and in a linear octupolar trap.
These two traps are inline and we can shuttle ions within the quadrupolar trap and between the two different traps. We developed a method which allows us to accumulate the transported ions and build large ion clouds in the octupolar trap. We will discuss this method, the observed organisations of the laser cooled ions and what it implies for applications related to frequency metrology and any experiments relying on high resolution laser-atom interactions.
related publications :
• C. Champenois, et.al, A double ion trap for large coulomb crystals AIP Conf. Proc. 1521
• M. R. Kamsap, et.al, Fast accumulation of ions in a dual trap, EPL, 110 (2015) 63002
• M.R. Kamsap, et.al, Experimental demonstration of an efficient number diagnostic for long ion
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