5 citations · 12 across the 14 of their papers we have counts for
14 papers
Inverse designed resistive heaters for uniform switching of Phase Change Materials
Virat Tara, Khoi P. Dao, Juejun Hu +1
Non-volatile phase-change material (PCM)-integrated metasurfaces offer a promising pathway toward next-generation solid-state reconfigurable free-space optics. However, their pract…
Complex wavefront engineering via decoupled space-time modulation
Virat Tara, Anna Wirth-Singh, Johannes E. Fröch +1
Solid-state Spatial Light Modulators (SLMs) are fundamentally limited in their ability to achieve high spatial complexity and high temporal bandwidth simultaneously. High-speed, lo…
Measurement of complex scattering matrix in a nano-cavity array for boundary scattering tomography
Andrew Tang, Romil Audhkhasi, Virat Tara +3
On-chip silicon photonic coupled cavity arrays (CCA) are a promising platform for quantum simulators, with access to high Quality (Q) factor resonators, tunability, and foundry com…
Increased endurance of nonvolatile photonics enabled by nanostructured phase-change materials
Jayita Dutta, Andrew Tang, Brian Mills +8
The rapid rise of artificial intelligence, and in-memory computing has reinvigorated research on scalable, energy-efficient, and reconfigurable photonic hardware. Non-volatile phas…
Electrically reconfigurable nonvolatile transmissive metasurface in visible
Virat Tara, Romil Audhkhasi, Andrew Tang +5
The synergy between metasurfaces and non-volatile phase change materials (PCMs) has created many reconfigurable photonic devices for applications in optical memory, optical computi…
Compact broadband thermal absorbers based on plasmonic fractal metasurfaces
Romil Audhkhasi, Virat Tara, Raymond Yu +2
The ability to efficiently absorb thermal radiation within a small material volume is crucial for the realization of compact and high spatial resolution thermal imagers. Here we pr…
NEO-PGA: Nonvolatile electro-optically programmable gate array
Rui Chen, Andrew Tang, Jayita Dutta +4
Programmable photonic integrated circuits (PICs) offer a unique opportunity to create a flexible platform, akin to electronic field programmable gate array (FPGA). These photonic P…
Electrically reconfigurable nonvolatile flatband absorbers in the mid-infrared with wide spectral tuning range
Romil Audhkhasi, Virat Tara, Matthew Klein +5
While recent advances in reconfigurable photonics have provided new avenues for manipulating light on the subwavelength scale, on-demand control of infrared absorption remains elus…
All-Dielectric Metasurface with a Two-Dimensional Locally Flat Photonic Band
Minho Choi, Christopher Munley, Virat Tara +4
Photonic flatbands offer promising light-matter interaction due to their unique slow-light nature. In recent years, flatbands have also attracted significant interest in optical en…
Free Space Few-Photon Nonlinearity in Critically Coupled Polaritonic Metasurfaces
Jie Fang, Abhinav Kala, Rose Johnson +15
Few-photon optical nonlinearity in planar solid-state systems is challenging yet crucial for quantum and classical optical information processing. Polaritonic nonlinear metasurface…
Heteroepitaxial growth of highly anisotropic films on GaAs
Kelly Xiao, Virat Tara, Pooja D. Reddy +6
The epitaxial integration of anisotropic materials with mainstream cubic semiconductors opens new routes to advanced electronic and photonic devices with directional properties. In…
Low-power 7-bit hybrid volatile/ nonvolatile tuning of ring resonators
Jayita Dutta, Rui Chen, Virat Tara +1
Programmable photonic integrated circuits are expected to play an increasingly important role to enable high-bandwidth optical interconnects, and large-scale in-memory computing as…
Low-loss multilevel operation using lossy PCM-integrated silicon photonics
Rui Chen, Virat Tara, Jayita Dutta +3
Chalcogenide phase-change materials (PCMs) offer new paradigms for programmable photonic integrated circuits (PICs) thanks to their zero static energy and significant refractive in…
Non-volatile Phase-only Transmissive Spatial Light Modulators
Zhuoran Fang, Rui Chen, Johannes E. Fröch +14
Free-space modulation of light is crucial for many applications, from light detection and ranging to virtual or augmented reality. Traditional means of modulating free-space light…