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OSA Quantum 2.0 Conference

High-fidelity quantum teleportation of time-bin qubits at telecommunication wavelength

Raju Valivarthi, Samantha I. Davis, Lautaro Narváez, Yewon Gim, Meraj Hussein, George Iskander, Boris A. Korzh, Nikolai Lauk, Andrew Mueller, Daniel Oblak, Cristián Peña, M. Rominsky, Matthew D. Shaw, Christoph Simon, Neil E. Sinclair, Panagiotis Spentzouris, M. Spiropulu, Dawn Tang, S. Xie

Published Jan 1, 2020• 0 citations
Publisher

Abstract

Quantum teleportation is important for fundamental physics studies and quantum network technologies. We teleport time-bin qubits with high fidelity of 91 1% at telecom-wavelength using off-the-shelf fiber-based components and custom DAQ± systems.
DOI
10.1364/quantum.2020.qth7a.5

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Semiconductor quantum dots are prime candidates for quantum network applications such as quantum relays, but their typical emission wavelength, polarization qubit encoding scheme and low operating frequency are incompatible with existing technologies. Our work shows that InAs/InP quantum dots driven with GHz-clocked pulses, in combination with qubit transcoding interferometers, can bridge these gaps. The demonstrated 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.