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Efficient generation of temporally shaped photons using nonlocal spectral filtering

MPS-Authors
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Averchenko,  V.
Quantumness, Tomography, Entanglement, and Codes, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Sych,  D.
Optics Theory Group, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Marquardt,  C.
Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs,  G.
Leuchs Emeritus Group, Emeritus Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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1910.03848.pdf
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Citation

Averchenko, V., Sych, D., Marquardt, C., & Leuchs, G. (2020). Efficient generation of temporally shaped photons using nonlocal spectral filtering. Physical Review A, 101(1), 013808. doi:10.1103/PhysRevA.101.013808.


Cite as: https://hdl.handle.net/21.11116/0000-0009-C161-F
Abstract
We study the generation of single-photon pulses with the tailored temporal shape via nonlocal spectral filtering. A shaped photon is heralded from a time-energy entangled photon pair upon spectral filtering and time-resolved detection of its entangled counterpart. We show that the temporal shape of the heralded photon is defined by the time-inverted impulse response of the spectral filter and does not depend on the heralding instant. Thus one can avoid postselection of particular heralding instants and achieve a substantially higher heralding rate of shaped photons as compared to the generation of photons via nonlocal temporal modulation. Furthermore, the method can be used to generate shaped photons with a coherence time in the ns-μs range and is particularly suitable to produce photons with the exponentially rising temporal shape required for efficient interfacing to a single quantum emitter in free space.