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Quantum gyroelectric effect: Photon spin-1 quantization in continuum topological bosonic phases Topological phases of matter arise in distinct fermionic and bosonic flavors. The fundamental differences between them are encapsulated in their rotational symmetries—the spin. Although spin quantization...

Single photon pulse induced transient entanglement force We show that a single photon pulse incident on two interacting two-level atoms induces a transient entanglement force between them. After absorption of a multi-mode Fock state pulse, the time-dependent atomic interaction mediated by the vacuum...

Quantum sensing of photonic spin density using a single spin qubit Nitrogen vacancy (NV) centers in diamond have emerged as promising room temperature quantum sensors for probing condensed matter phenomena ranging from spin liquids, 2D magnetic materials, and magnons to hydrodynamic flow of current...

Singular evanescent wave resonances in moving media Resonators fold the path of light by reflections leading to a phase balance and thus constructive addition of propagating waves. However, amplitude decrease of these waves due to incomplete reflection or material absorption leads to a finite...

Selected papers on thermal photonics materials: Observation of nonvanishing optical helicity in thermal radiation from symmetry-broken metasurfaces X Wang, T Sentz, S Bharadwaj, SK Ray, Y Wang, D Jiao, L Qi, Z Jacob Science Advances 9 (4), eade4203 (2023) Symmetry breaking in thermal photonics X...

Research Highlights (2010-2020)

Photonics Chapter IIT Bombay Pittsburgh Quantum Institute

PurdueX's Quantum Technology: Detectors and Networking MicroMasters ® Program Quantum Detectors and Sensors Quantum Detectors and Sensors PurdueX's Quantum Technology: Computing MicroMasters ® Program Quantum Detectors Quantum Detectors

The major expertise of our group is in the area of Photonic Materials and Devices. The breadth of our research puts us in a unique position consisting of advancements across the EM spectrum from THz to UV. While we work on a diverse range of topics, the following key projects will provide an insight...