Quantum Optics

Effects of cooperative atomic interactions in one and two photons micromaser. Role of pump phase fluctuations in micromaser. Fiber 3db coupler-an interferometric sensor. Measurement of the atomic wave function, interferometric approach. Quantum non-demolition measurement of quantized cavity field using atom probe. Dynamics of two-level atoms in the presence of gravitational field. Study of Coherence properties of Bose-Einstein condensate.

Quantum Information and Computation

Quantum information theory has been surprisingly successful in various fields of everyday technology, for instance, in semiconductor devices, magnetic resonance imaging, solar panels, and lasers. The utmost exploitation of the laws of quantum mechanics employed in information processing bears a strong promise not only to open new avenues in the science of quantum physics but also to recast computation, communication, and information technologies with more sophistication.

We perform cutting-edge research in quantum information, quantum computation, and quantum optics. For example, we study different quantum correlations of continuous-variable Gaussian states, such as quantum non-locality, quantum steering, quantum entanglement, and quantum discord in experimentally accessible quantum systems. These quantum correlations, which satisfy a strict hierarchy relation, are significant mainly due to their valuable applications in quantum information and computation. In addition, our research interests also include various other important topics, such as quantum teleportation, quantum plasmonics, quantum heat engines, second harmonic generation, four-wave mixing, parametric conversion, optomechanical systems, Gaussian Boson Sampling, computational complexity, and other related topics.

Dr. Shakir Ullah