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PT-symmetric spectral singularity and negative frequency resonance
Sarang Pendharker, Yu Guo, Farhad Khosravi +1
Vacuum consists of a bath of balanced and symmetric positive and negative frequency fluctuations. Media in relative motion or accelerated observers can break this symmetry and pref…
Axial Super-resolution Evanescent Wave Tomography
Sarang Pendharker, Swapnali Shende, Ward Newman +3
Optical tomographic reconstruction of a 3D nanoscale specimen is hindered by the axial diffraction limit, which is 2-3 times worse than the focal plane resolution. We propose and e…
Universal Zero Conductivity Condition for Optical Absorption
Yu Guo, Sarang Pendharker, Zubin Jacob
Harnessing information and energy from light within a nanoscale mode volume is a fundamental challenge for nanophotonic applications ranging from solar photovoltaics to single phot…