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

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

2007-05-09

arxiv.org/abs/0705.1256v2

Nature Physics 4, 103-107 (2008)

Physics

Quantum Physics

19 pages 3 figures 1 table

Scientific paper

10.1038/nphys832

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.

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