Observation Of Bose Einstein Condensation of 87Rb (April 2014)
- Quantum information processing with ultracold trapped atoms & ions
- Physics with cold Quantum Gases
- Nanophotonics and Plasmonics
Quantum information processing with ultracold, trapped atoms and ions.
Recent years have seen a dramatic rise in the interest on developing and understanding the fundamental governing principles of quantum phenomena at the single atom level. There has been an increase in efforts around the globe for having systems where a complete control and understanding of quantum phenomena has increased. The complete control of quantum states has provided the ability of using isolated atomic systems for quantum information processing and precision spectroscopy for validating fundamental physicall theories. Our Initial research efforts will be focused towards building a quantum computer that utilizes individual atoms or charged particles (ions) in electromagnetic traps as quantum bits or Qubits. Usually, very long lived internal quantum states of these particles are used for storing and manipulating quantum information. The trapping potential along with some coupling interaction (a coulomb interaction in case of ions), is used to transfer quantum information from one Qubit to the other.
Nanophotonics and Plasmonics
Fundamental studies of optically induced plasmon resonances in metallic nanostructures combined with the study of interaction of collective electronic oscillations with single atomic particles. Studies would also be done towards understanding novel atom-atom entanglement schemes mediated by Plasmon resonances in thin-films and nanostructures. The extension of this work to applied science would be in developing techniques for their usefulness in high performance chemical and biological agents' sensing. Special emphasis will be on developing novel techniques in probing and imaging of individual cell surfaces for localizing and tracking active areas on the cell surfaces.
Rydberg Dressing of atoms in a Bose-Einstein CondensateCurrent experimental efforts are concentrated on creating long range dipole interactions between atoms in a sample of a BEC. We will be using dressing the electronic ground state of the atoms with the highly excited Rydberg states. Since, Rydberg atoms exhibit very long range dipole-dipole interactions, this long range of the interaction will be used to create novel states of condensed matter systems, for e.g. looking for Super-Solid phase. In this direction, we have constructed an experimental setup to produce BEC in a Quadrupole-Ioffe (QUIC) magnetic trap. Atoms in the QUIC trap are loaded from a standard Magneto-Optic trap that is fed from a slowed atomic beam ermerging from a Zeeman slower. Atoms are further cooled down to Quantum Degneracy using forced RF evaporative cooling. This work will be carried out in collaboration with Dr. Ashok Mohapatra and Dr. Rejish Nath .
Laser cooling of Sr atoms for experiments towards single atom trapping in plasmonic nanostructuresParallel efforts are under progress to make a sample of cold Sr atoms. These atoms will be cooled down to single-photon recoil-limited temperatures by cooling via the narrow intercombination line. A frequency doubler has been designed and is bieng constructed for producing laser light at 461 nm wavelength that will be used to slow and cool Sr atoms in a Magneto-optic trap.
- 2nd School on Ultra cold atoms for fundamental science and enabling technologies-IISER Pune.
- Symposium on collaboration between Academia and Industries
- School on Ultra cold atoms for fundamental science and enabling technologies - Goa.