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Reaching for the stars

Night time. You cast a glance up in the air.
You glimpse a spark of light: You want to know
If it’s from just one star, or from a pair.
How can you answer this? Well, read below.

Light travels from the source up to your eye
But gets a bit blurred out along its path.
So, even though they’re spaced out in the sky,
Two stars might look as one. Let’s do the math.

If, on your image plane, you get two spots
With smaller distance than the light’s wavelength,
Lord Rayleigh says you can’t resolve the source.

But quantum sensors let you beat this curse
Even for very close points: That’s the strength!
The applications of this study are lots.

You can connect the dots…
From bioscience to astral observation
Up to 3D super-localization.



About this #PoetRL

  • Paper Title:  Towards Superresolution Surface Metrology: Quantum Estimation of Angular and Axial Separations
  • Authors:  Carmine Napoli, Samanta Piano, Richard Leach, Gerardo Adesso, and Tommaso Tufarelli
  • Reference:  Phys. Rev. Lett. 122, 140505 – Published 12 April 2019
  • URL:  https://doi.org/10.1103/PhysRevLett.122.140505
  • Poem by:  gerardo.adesso@gmail.com  
  • #PoetRL ID:  ¶9

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