Super-resolution imaging techniques based on spatial coherence
Abstract
In the proposed project we will focus on measurements and metrology employing the offdiagonal density matrix elements hrjrijr0i which correspond to the spatial coherence Ji(r; r0) of light collected in the image plane. Fundamentally, obtaining the spatial coherence is equivalent to phase profile retreival for the collected light and can be also understood as a task of full density matrix reconstruction. While spatial coherence already plays a certain role in SPADE and others techniques such as SPLICE or SLIVER , its full potential is still to be explored, especially given a wide choice of spatially-resolved measurements such as 2-photon interference [PBB+18], homodyne detection [DBB] or direct Wigner function probing [MBWD]. Reconstruction of the full density matrix yields an advantage in postponing the configurational decisions to the data processing stage. Such an approach is commonly employed during digital signal processing (DSP) in modern optical communication, where high time-domain analog-to-digital conversion rates allow for high fidelity signal recovery and compensation of certain propagation effects. State-of-the-art measurement techniques could be further enhanced by novel coherent quantum processing methods [PML+19, MPL+19, LLM+19] utilizing spatially highly-multimode quantum memory architectures. The study of different experimental approaches will be combined with the development of data processing techniques building on recent advances in quantum metrology, especially in the context of multiparameter estimation. The quantum metrology framework will also provide benchmarking for the efficiency of the superresolution techniques.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 30, 2019
- Source ID
- N629091912127
Entities
People
- Konrad Banaszek
Organizations
- Office of Naval Research
- United States Navy
- University of Warsaw