Dr. Joshi Receives a Research Corp Grant

Joshi  Dr. Amitabh Joshi received a grant from Research Corp.  Dr. Joshi has won a Single Investigator Cottrell College Science Awards grant from Research Corp.  Dr. Joshi will receive $45,000 to accomplish the research under this grant.  The title of the grant is “Quantum Memory and Information Processing Using Multi-level Electromagnetically Induced Transparency System.”  The work to be accomplished is described in the proposal summary:

The light or photon storage technique is based on the phenomenon of slowing down light.  This slowing down is due to the electromagnetically induced transparency (EIT).  In the slow-light experiment a coupling field in the three-level atomic medium makes an opaque medium transparent and a weak signal field travels through this medium without dissipation with a substantially reduced group velocity.  The coupled light and the atomic excitations can be described by “dark-state-polariton.”  In order story a light pulse we smoothly turn off the control field, which causes the dark-state polariton to be adiabatically converted into purely atomic excitation.  Turning on the control field back reverse the process and light pulse leaves the sample.  Recently, we have generalized the concept of form-stable coupled excitation of atom and field, and formulated the generalized-dark-state-polariton (GDSP) in the four-level inverted-Y atomic medium, and shown that the quantum states of light can be mapped onto more htan one collective atomic polarization state of the multilevel atomic system.  This system behaves like a copier, divider or multiplexer for quantum states of photons, which are essential for quantum information processing and quantum networking, and more useful than the conventional three-level systems.  The experimental demonstration of this scheme is the main issue of this research proposal.