Gigahertz-Clocked Teleportation of Time-Bin Qubits with a Quantum Dot in the Telecommunication <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mi>C</mml:mi></mml:math> Band

Abstract

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.