Ivette Fuentes

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347 appearances 1 recordings 1 series first heard Nov 2025 last heard 25 Nov

Ivette Fuentes’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Nov 2025 with 1.

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Theories of Everything with Curt Jaimungal · Roger Penrose and Ivette Fuentes: A Bold New Test of Gravity · 25 Nov 2025 podcast

So that's kind of uh one version of this super famous experiment uh that was done in the early times of quantum mechanics with electrons, right?

That uh the interference f fringes of electrons were observed, confirming that um

you know, that they behave quantum mechanically, this uh particle wave duality experiment.

So that's uh now almost a hundred years since uh uh the Nobel Prize was um given to um uh Pauli for that uh and and so on.

But since then people have been doing interference with atoms and even

With bigger systems, the record is by Marcus Arndt, where he can put um uh molecules in the interferometer and see the the fringes and and the contrast.

Now what uh Rohn uh did was a very special type of interferometer because um well usually there's two different versions of it.

One is the atoms are in free flow, so you take

like an atom and you you bim split it and you let it fall.

But it's in such a way that the atom follows two different trajectories and then with fields you make it interfere.

And actually that's one way in which we measure gravity, that's a gravimeter, because the different sort of trajectories.

Due to that, the atom picks up information of the local gravitational field and that's how gravimeters are are made.

But they're in free flow.

Another type of in uh atom interferometer would be uh in which your gu it's called a guided interferometer, in which you're like um have fields to trap the the atoms.

They're not in free fall, and then you could like separate them and and and make them interfere again.

So uh what Ron Foldman did is that he did a hybrid version of that, in which he takes the atom.

So he starts with a Bose Einstein condensate uh made of rubidium eighty-seven atoms, and he cools them down to something like three nano Kelvin.

So this is super cold.

Um it's as cold as we can get things in the lab in the experiment, and then he makes

The atoms go through the BIM splitter.

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