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arXiv · 2306.06541

Quantum Super-Resolution with Balanced Homodyne Detection in Low-Earth-Orbit

Ronakraj K Gosalia·Robert Malaney·Ryan Aguinaldo·Jonathan Green
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Abstract

Quantum super-resolution involves resolving two sources below the Rayleigh limit using quantum optics. Such a technique would allow high-precision inter-satellite positioning and tracking on communication and navigation constellations. Due to the size, weight and power constraints typical of low-earth-orbit (LEO) satellites, a simple solution is often preferred. Here, we show that a balanced homodyne detection (BHD) setup using a shaped single-mode local oscillator can achieve super-resolution despite typical photonic losses. We further analyze the impact of a fluctuating and fixed centroid misalignment due to satellite pointing issues, and find that fixed misalignment is comparatively more detrimental to the performance of a BHD setup. Thus, our study provides a practical assessment of BHD to achieve super-resolution on a modern LEO satellite platform. Finally, we discuss how our analysis can be extended to stellar sources for astronomical applications.

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Ronakraj K Gosalia, Robert Malaney, Ryan Aguinaldo, Jonathan Green. 2023-06-10. Quantum Super-Resolution with Balanced Homodyne Detection in Low-Earth-Orbit. https://doi.org/10.1088/1555-6611%2Fad1750

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