Letter abstract
Nature Physics 4, 103 - 107 (2008)
Published online: 20 January 2008 | doi:10.1038/nphys832
Subject Categories: Polymer physics | Atomic and molecular physics | Optical physics | Information theory and computation
Memory-built-in quantum teleportation with photonic and atomic qubits
Yu-Ao Chen1,2, Shuai Chen1, Zhen-Sheng Yuan1,2, Bo Zhao1, Chih-Sung Chuu1, Jörg Schmiedmayer3 & Jian-Wei Pan1,2
The combination of quantum teleportation1 and quantum memory2, 3, 4, 5 of photonic qubits is essential for future implementations of large-scale quantum communication6 and measurement-based quantum computation7, 8. Both steps have been achieved separately in many proof-of-principle experiments9, 10, 11, 12, 13, 14, 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 
s. 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 network2, 3, 4, 5, 6, 7, 8.
- Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, D-69120 Heidelberg, Germany
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
- Atominstitut der Österreichischen Universitäten, TU-Wien, A-1020 Vienna, Austria
Correspondence to: Yu-Ao Chen1,2 e-mail: yuao@physi.uni-heidelberg.de
Correspondence to: Jian-Wei Pan1,2 e-mail: jian-wei.pan@physi.uni-heidelberg.de
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