2014/07/31 by Bharath Srivathsan, Gurpreet Kaur Gulati, Alessandro Cerè +3
Computer Science · Physics and Astronomy · #Atomic physics #Computer science #Detector #Envelope (radar) #Exponential decay #Exponential function #Laser-Matter Interactions and Applications #Materials science #Optics #Photon #Physics #Pulse (music) #Quantum Information and Cryptography #Quantum mechanics #Quantum optics and atomic interactions #Reversing #Telecommunications #quant-ph
paper · pdf · doi:10.1103/physrevlett.113.163601
published as Phys. Rev. Lett. 113, 163601 (2014) · 4 pages, 4 figures
arxiv created 2014/07/31 · openalex publication_date 2014/10/15 · arxiv updated 2014/10/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate a way to prepare single photons with a temporal envelope that resembles the time reversal of photons from the spontaneous decay process. We use the photon pairs generated from a time-ordered cascade decay: the detection of the first photon of the cascade is used as a herald for the ground-state transition resonant second photon. We show how the interaction of the heralding photon with an asymmetric Fabry-Perot cavity reverses the temporal shape of its twin photon from a decaying to a rising exponential envelope. This single photon is expected to be ideal for interacting with two-level systems.