3 papers
astro-ph.IM2025
Fundamental Limits to Phase and Amplitude Estimation in the High-Strehl Regime
Jacob Trzaska, Amit Ashok
Context: Ground-based telescopes are susceptible to seeing, an atmospheric phenomenon that reduces the resolving power of large observatories to that of a home telescope. Compensat…
physics.optics2025
Zernike Mode Sorting with Vortex Phase Filters: Perfect Coronagraphs and Ideal Wavefront Sensors
Jacob Trzaska, Amit Ashok
Spatial mode sorting has come to prominence as an optical processing modality capable of saturating fundamental limits to numerous sensing tasks including wavefront sensing, corona…
physics.optics2024
Towards the Quantum Limits of Phase Retrieval
Jacob Trzaska, Amit Ashok
We consider the problem of determining the spatial phase profile of a single-mode electromagnetic field. Our attention is on input states that are a statistical mixture of displace…