Trapped Laser-cooled off-focused Barium ions in linear Paul trap.
“When we get to the very, very small world—say circuits of seven atoms—we have a lot of new things that would happen that represent completely new opportunities for design. Atoms on a small scale behave like nothing on a large scale, for they satisfy the laws of quantum mechanics. So, as we go down and fiddle around with the atoms down there, we are working with different laws, and we can expect to do different things. We can manufacture in different ways. We can use, not just circuits, but some system involving the quantized energy levels, or the interactions of quantized spins.” – Richard P. Feynman
There's Plenty of Room at the Bottom--Feynman's Talk (zyvex.com)
Cloud of Barium Ions
Linear chain of Ions
I am a research fellow at the Centre for Quantum Technologies (CQT), National University of Singapore. I am an ion trapper, working with a trapped ion system - trapped laser-cooled Barium ion. By applying a combination of static and radiofrequency electric fields to provide a pseudo-harmonic potential in three dimensions charged ions can be trapped and stored over long periods of time. Laser-cooled trapped ions are among the most pristine and well-controlled quantum systems that leads them at the forefront of Quantum computation. Quantum computing represents an exciting frontier in the realm of information processing; it is a promising technology that may provide future advances in a wide range of fields, from quantum chemistry to optimization problems.
Graduate/Dissertation Research: During my doctoral research, my work focused on strongly correlated quantum many-body physics in trapped ion systems. I developed a linear Paul trap set up which successfully demonstrated the trapping of laser-cooled barium ions. This trap was then used to measure the branching fraction of the P_(3/2) level of the Barium ion with high precision, paving the way towards measuring atomic parity violation. A precise measurement of atomic parity violation serves as a direct test of the electroweak theory of the Standard Model of physics.
In addition to this experimental work, a portion of my Ph.D. was dedicated to developing an experimental protocol for generating an entangled pure state of phonons in a trapped ion system. The goal of this theoretical work was to develop a way to cool a string of ions to their transverse motional mode in a single operation.
The link of my dissertation is following ==
"PRECISION MEASUREMENT TO STUDY STRONGLY CORRELATED SYSTEMS-FROM A SINGLE ION TO PHONONS IN AN ION CHAIN "
Demonstration of Self-Designed Dust Particle Trap for Outreach Program at the Singapore Science Festival: :
