Theoretical Tools for Quantum Optics in Structured Media

Iñigo Liberal, Nader Engheta

During recent years zero-index media have offered unique tools for the control and manipulation of electromagnetic waves. However, similar concepts and techniques could be transplanted to the manipulation of quantized fields. As a specific example, we demonstrate theoretically that supercoupling phenomena in a N-port epsilon-and-mu-near-zero (EMNZ) hub can be utilized in the generation of subradiant, maximally entangled, multi-qubit states.

Alejandro González-Tudela

Marlan O. Scully, Kenneth G. Whitney

Devin Vega, Pamela B. Rambow, Ming Tian

Optical nutation has been used as an important spectroscopic tool to study the interaction between atoms and coherent light. It is based on the fact that the input pulse area needed to reach the first nutation peak is a constant value that only depends on the transverse mode of the optical beam. The interaction strength in terms of Rabi frequency can be measured directly from the time to reach the first nutation peak. However, the assumption of constant pulse area is only valid in the limit of the optically thin media, while optically thick media are of great interest for applications in classical and quantum information storage and processing. This paper studies the behavior of optical nutation in optically thick media through theoretical simulation and experiments in rare-earth atomic ensembles doped in a crystal lattice. A simple formula for the input pulse area as a function of the absorption length has been found, which covers optically thick media and is consistent with the value given by the low absorption limit.

Ravinder Rupchand Puri

Mohammad Mosleh, Maliheh Ranjbaran, Seyedeh Mehri Hamidi

Various efforts have been made to determine the polarization state of evanescent waves in different structures. The present study shows the reliability of magneto-optical spectroscopy of D1 and D2 lines of rubidium metal and polarization-dependent transitions to investigate and trace the changes in the polarization state of evanescent fields during total internal reflection over different angles. For this purpose, we design and fabricate atomic- evanescent Rb vapor cells and examine the effect of polarization changes of evanescent waves, depending on the propagation direction of evanescent waves in anisotropic rubidium vapor media under 88 mT external magnetic field by different configurations theoretically and experimentally. The results confirm the dependency of allowed [Formula: see text] transitions on the magneto optical configuration as a tool to determine changes in the polarization of evanescent waves in more complicated wave states in anisotropic media.