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Quantum field theory for spin operator of the photon

News: May 31, 2022
Our latest paper reports on the discovery of the photon spin operator. All particles in nature can be classified as fermions or bosons. The key distinguishing characteristic is their spin, an internal angular momentum. We stumbled on the spin operator of bosonic gauge fields using quantum...

Latest Paper in Physical Review B

News: December 14, 2023
We are delighted to share our recent work on "First-principles study of large gyrotropy in MnBi for infrared thermal photonics", published in Physical Review B. It talks about how nonreciprocal gyrotropic materials have attracted significant interest recently in material physics, nanophotonics, and...

Spinning Metasurfaces

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Spectro-polarimetric imaging in the long-wave infrared (LWIR) region plays a crucial role in applications from night vision and machine perception to trace gas sensing and thermography. However, the current generation of spectro-polarimetric LWIR imagers suffers from limitations in size, spectral...

Andy Schramka and Peter Menart win the NDSEG fellowship

News: March 22, 2024
Our group members Andy Schramka and Peter Menart have recently been awarded the prestigious National Defense Science and Engineering Graduate fellowship by the Department of Defense. DoD plans to award new three-year graduate fellowships each fiscal year to individuals who have demonstrated ability...

Invited talk at CLEO 2024

News: April 30, 2024
Prof. Zubin Jacob will deliver an invited talk titled "HADAR: Machine perception through pitch darkness like broad daylight" at CLEO 2024. He will talk about how machine perception uses advanced sensors to collect information about the surrounding scene for situational awareness. State-of-the-art...

LIGHTING A FIRE WITH VACUUM FRICTION

Blog: May 12, 2023
ONE OF THE SURPRISES OF QUANTUM MECHANICS IS ZERO POINT FLUCTUATIONS WHICH PERVADE BOTH VACUUM AND MATTER. Far from just theoretical interest, practical consequences exist at the nanoscale when these fluctuations cause forces that attract or repel macroscopic bodies. They are also manifested at the...

IN HIGH TEMPERATURES, A NEW CLASS OF CERAMICS CONTROLS HEAT RADIATION

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Manufacturers frequently use coatings to protect the structural stability of engines or power generators operating at high temperatures. Ceramic shields, however, have not been able to adequately address a critical, performance-limiting factor: heat radiation. Researchers have engineered ceramic...

EXPLOITING LOSS

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Metamaterials operating at frequency ranges in which the dielectric permittivity is close to zero have been discussed for use across a wide range of optical applications. Sean Molesky and colleagues from the University of Alberta in Canada, have now proposed methods for engineering thermally excited...