The combination of quantum teleportation and quantum memory of photonic qubits is essential for future implementations of large-scale quantum communication and measurement-based quantum computation. Both steps have been achieved separately in many proof-of-principle experiments, but the demonstration of memory-built-in teleportation of photonic qubits remains an experimental challenge. Here, we demonstrate teleportation between photonic (flying) and atomic (stationary) qubits. In our experiment, an unknown polarization state of a single photon is teleported over 7 m onto a remote atomic qubit that also serves as a quantum memory. The teleported state can be stored and successfully read out for up to 8 micro-second. Besides being of fundamental interest, teleportation between photonic and atomic qubits with the direct inclusion of a readable quantum memory represents a step towards an efficient and scalable quantum network.
@article{arxiv.0705.1256,
title = {Memory-built-in quantum teleportation with photonic and atomic qubits},
author = {Yu-Ao Chen and Shuai Chen and Zhen-Sheng Yuan and Bo Zhao and Chih-Sung Chuu and Joerg Schmiedmayer and Jian-Wei Pan},
journal= {arXiv preprint arXiv:0705.1256},
year = {2008}
}