7 May 2015 Temporal shaping of single-photon pulses
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The ability to control the temporal shape of single-photon pulses is highly desirable in quantum information processing. For instance, it has been shown that Gaussian pulses are best suited for linear optics quantum computing1. By mimicking the time-reversal of a spontaneous emission event, it also allows to optimize the absorption of the prepared photons by a quantum emitter. In this work we investigate the potential of using fast modifications of the detuning between an atomic system and a cavity mode during photon emission to reach this goal. We compare two approaches consisting of varying the emitter or cavity frequency. The latter, achievable by a fast modification of the refractive index of a solid state cavity, will be shown to have negligible influence on the photon spectrum. It allows to create Gaussian pulses interacting with a fidelity to the target photons of 99%, as well as time-reversed photons absorbed by an atom in a cavity with a probability of 93%.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gaston Hornecker, Gaston Hornecker, Emanuel Peinke, Emanuel Peinke, Julien Claudon, Julien Claudon, Alexia Auffèves, Alexia Auffèves, Jean-Michel Gérard, Jean-Michel Gérard, "Temporal shaping of single-photon pulses", Proc. SPIE 9505, Quantum Optics and Quantum Information Transfer and Processing 2015, 95050N (7 May 2015); doi: 10.1117/12.2178991; https://doi.org/10.1117/12.2178991


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