2nd Workshop on Quantum-Inspired Superresolution

[Update on 11 Aug] The links to all the recordings are now posted at the bottom of this page. Note that they are online for a limited time only, and some talks are not available because the speakers did not wish to be recorded.

[Update on 9 Aug] The Zoom meeting information for all three days has now been emailed to all registrants. If you have not received the information for whatever reason, please contact me at mankei@nus.edu.sg.

[Update on 7 Aug] The talk schedule is now posted below! If you’d like to give a talk but your information doesn’t appear below for whatever reason, please email me at mankei@nus.edu.sg directly.

The 2nd Workshop on Quantum-Inspired Superresolution will be held at 19:00–23:00 Singapore time (GMT+8, same below) on 9th–11th August 2023 over Zoom. If you would like to join or present, please register using the form below, and we will send you the Zoom link by email on 9th August. Registration is free! Please use your academic or company email when registering.

Link to registration form

The deadline if you’d like to give a talk is 18:00, 7th August 2023, and the deadline if you just want to join is 18:00, 8th August 2023. We will email the talk schedule to the speakers on 7 or 8 Aug and also post it on this page.

We will try to accommodate every one who wants to give a talk, but in the unlikely event that the workshop is too popular, we ask for your understanding that we may have to decline your request.

If you have registered but have not received the Zoom link email by 18:00 9th August for whatever reason, please email mankei@nus.edu.sg.

Schedule (Singapore time, GMT+8)

9th August 2023

19:00–19:30: Zixin Huang, Macquarie University
Ultimate limits of exoplanet spectroscopy: a quantum approach
Physical Review A 107 (2), 022409.
19:30–20:00: Nicolas Treps, Laboratoire Kastler Brossel – Sorbonne Université
Ultra-sensitive separation estimation of optical sources
We implement a quantum-metrolgy-inspired approach for estimating the separation between two incoherent sources, achieving a sensitivity five orders of magnitude beyond the Rayleigh limit. Using a spatial mode demultiplexer, we examine scenes with bright and faint sources, through intensity measurements in the Hermite-Gauss basis.
20:00–20:30: Giacomo Sorelli, Fraunhofer Institute for Optronics, System Technology and Image Exploitation – IOSB
Practical Tests for Sub-Rayleigh Source Discrimination with Imperfect Demultiplexers
Quantum-optimal discrimination between one and light sources can be achieved by spatial-mode demultiplexing, simply monitoring whether a photon is detected in a single antisymmetric mode. However, we show that for any imperfections of the demultiplexer, no matter how small, this simple statistical test becomes practically useless. Nevertheless, we are able to identify new practical statistical tests which provide a method for designing reliable experiments, with control over the maximal probability of error.
20:30–20:45: Break
20:45–21:15: Hyunsoo Choi, Birck Nanotechnology Center, School of Electrical and Computer Engineering, Purdue University
Qunatum Accelerated Imaging (QAI)
How to design optimal bases to minimize a quantum Fisher Information and estimating parameters without any prior information. Applying it in the real world problem considering the non-idealities like noise, limited acquisition time.
21:15–21:45: Mikael Backlund, University of Illinois at Urbana-Champaign
Quantum-inspired super-resolution of spontaneous emission lifetimes
21:45–22:15: Yunkai Wang, University of Illinois at Urbana-Champaign
Fundamental limit of bandwidth-extrapolation-based superresolution
The bandwidth extrapolation method is a superresolution technique that enable us to estimate the Fourier components of a spatially bounded source beyond the cutoff spatial frequency of the imaging system. In this study, we harness the principles of quantum estimation theory to analyze the sensitivity of bandwidth extrapolation by modeling the source in terms of unknown parameters corresponding to the Fourier components. We discover that in the small-source limit, specific measurement approaches can substantially enhance sensitivity beyond what a naïve measurement strategy can achieve.

10th August 2023

19:00–19:30: Stanisław Kurdziałek, University of Warsaw
Measurement noise susceptibility in quantum estimation
We introduce a new concept of Fisher information measurement noise susceptibility that quantifies the potential loss of Fisher information due to small measurement disturbance. We derive an explicit formula for the quantity, and demonstrate its usefulness in the analysis of paradigmatic quantum estimation schemes, including interferometry and superresolution optical imaging.
19:30–20:00: Emre Köse, Eberhard Karls University of Tübingen
Superresolution imaging with multiparameter quantum metrology in passive remote sensing
We study super-resolution imaging theoretically using a distant n-mode interferometer in the microwave regime for passive remote sensing, used, e.g., for satellites like the “Soil Moisture and Ocean Salinity” (SMOS) mission to observe the surface of the Earth. We give a complete quantum-mechanical analysis of multiparameter estimation of the temperatures on the source plane. We find the optimal detection modes by combining incoming modes with an optimized unitary that enables the most informative measurement based on photon counting in the detection modes and saturates the quantum Cramér-Rao bound from the symmetric logarithmic derivative for the parameter set of temperatures.
20:00–20:30: Sultan Wadood, Princeton University
Superresolution with feedforward nonlinearity
20:30–20:45: Break
20:45–21:15: Long Nguyen, University of Rochester – Robert Boyd group
Quantum-enhanced phase imaging without coincidence counting
We report on a phase-imaging method that achieves twice the phase shift and approximately 1.7 times the spatial resolution of an equivalent spatially and temporally coherent classical quantitative phase-imaging system by using quantum interference between successive spontaneous parametric down-conversion events in a nonlinear crystal. Furthermore, our method is approximately 1000 times faster than imaging the parametric down-conversion photons in coincidence, which requires measurement times on the order of tens of hours.
21:15–21:45: Sujeet Pani, Center for Quantum Information and Control (CQuIC), Department of Physics and Astronomy, University of New Mexico
Towards inversion interferometry for quantum-inspired superresolution of point sources in fluorescence microscopy
We investigate the implementation of inversion interferometry for superresolving point sources in fluorescence microscopy. Our work focuses on the integration of this technique with microscopes used in superresolution microscopy for imaging broadband sources and fluorophores commonly used to tag proteins in cells.
21:45–22:15: David J. Schodt, Teledyne Scientific & Imaging
Tolerance to aberration and misalignment in a two-point-resolving image inversion interferometer

11th August 2023

19:00–19:30: Tan Xiaojie, National University of Singapore
Quantum limit to subdiffraction incoherent optical imaging
19:30–20:00: Michael R Grace, Raytheon BBN Technologies
Quantum-Limited Superresolution Interferometry and Detection
The quantum-inspired superresolution community has moved beyond simple point-source resolution studies in two ways: investigating how practical non-idealities affect the performance of mode-sensitive measurements and exploring potential advantages for new classes of imaging tasks. Focusing on the latter, I will present our recent results on the quantum precision limits of baseline interferometry, which are most immediately relevant for astronomical imaging. I also will detail progress on general quantum performance bounds and optimal measurements for three new classes of superresolution detection tasks: symmetric and asymmetric object discrimination and on-line change detection.

Zoom recordings

These videos are online for a limited time only, although they can be downloaded now for later viewing.

Choi’s and Grace’s talks are not available, as they did not wish to be recorded.