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

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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 mus. 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.

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  1. Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, D-69120 Heidelberg, Germany
  2. 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
  3. 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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