Jul 17 – 22, 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Can a photon cause atoms to be excited for a negative amount of time? (experimental progress)

Jul 18, 2022, 5:00 PM
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Quantum optics and hybrid quantum systems Poster session


If a resonant photon traverses a medium and is transmitted on the far side, does it excite any atoms along the way? Previous work (PRX Quantum 3, 010314) provides evidence that it does. Since this work was limited to measurements using only broadband pulses of light, it cannot distinguish between recent theories that make strikingly different predictions in the case of excitation with narrowband pulses and media with low optical depth. In particular, the weak-value formalism suggests that this excitation time could be negative under such conditions. We present experimental progress to investigate this prediction and aim to fully elucidate the history of resonant photons that are ultimately transmitted through a cold cloud of 85Rb atoms.

Presenter name Daniela Angulo Murcillo
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Primary authors

Daniela Angulo Murcillo (University of Toronto) Kyle Thompson (University of Toronto) Vida-Michelle Nixon (University of Toronto) Andy Jiao (University of Toronto) Prof. Aephraim Steinberg (University of Toronto)

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