Memory-built-in quantum teleportation with photonic and atomic qubits

Date: 2008-01-20
Authors Y.-A. Chen, S. Chen, Z.-S. Yuan, B. Zhao, C.-S. Chuu, J. Schmiedmayer and Jian-Wei Pan
Journal No. Nature Physics 4, 103 (2008)
Abstract The combination of quantum teleportation1 and quantum memory2-5 of photonic qubits is essential for future implementations of large-scale quantum communication6 and measurement-based quantum computation7,8. Even though both of them have been demonstrated separately in many proof-of-principle experiments9-14, the demonstration of a memory-built-in teleportation of photonic qubits, remains an experimental challenge. Here we demonstrate teleportation between photonic (flying) and atomic (stationary) qubits. In the experiment, an unknown polarization single-photon state is teleported over 7 m onto a remote atomic qubit which serves also as a quantum memory. The teleported state can be stored and successfully read out up to 8 microseconds. Besides being of fundamental interest, our teleportation between photonic and atomic qubits with the direct inclusion of a readable quantum memoryrepresents an important step towards efficient and scalable connection of quantum networks2-8.