Bandwidth-tunable single photon source in an ion trap quantum network
M. Almendros, J. Huwer, N. Piro, F. Rohde, C. Schuck, M. Hennrich, F., Dubin, J. Eschner
TL;DR
This paper presents a tunable single-photon source using a trapped ion, capable of controlling photon properties like shape and coherence time, demonstrated through interference between remote sources.
Contribution
It introduces a novel, tunable single-photon source in an ion trap network with adjustable temporal shape and coherence, enabling advanced quantum communication.
Findings
Photon coherence time varied from 70 ns to 1.6 μs
High efficiency in photon creation via spontaneous Raman scattering
Successful demonstration of two-photon interference between remote sources
Abstract
We report a tunable single-photon source based on a single trapped ion. Employing spontaneous Raman scattering and in-vacuum optics with large numerical aperture, single photons are efficiently created with controlled temporal shape and coherence time. These can be varied between 70 ns and 1.6 s, as characterized by operating two sources simultaneously in two remote ion traps which reveals mutual and individual coherence through two-photon interference.
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