Gigahertz-Clocked Teleportation of Time-Bin Qubits with a Quantum Dot in the Telecommunication C Band
Matthew William Anderson, Tina Müller, J. Skiba-Szymanska, Andrey B Krysa, Jan Huwer, R. M. Stevenson, Jon Heffernan, D. A. Ritchie, Andrew J. Shields · Physical Review Applied · 2020
Semiconductor quantum dots are prime candidates for applications in quantum networks, such as quantum relays, but their typical emission wavelength, polarization-based qubit encoding scheme, and low operating frequency are incompatible with existing technologies. This study shows that InAs/InP quantum dots driven with gigahertz-clocked pulses, in combination with qubit-transcoding interferometers, can bridge these gaps. The observed teleportation of time-bin qubits in the telecom $C$ band, even when repetition rates exceed the inverse lifetime of the dot, shows the potential for integrating such devices with long-distance quantum network technologies.