Düsseldorf 2007 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster Quantenkommunikation

Q 35.5: Poster

Dienstag, 20. März 2007, 16:30–18:30, Poster C

robust creation of entanglement between remote memory qubits — •bo zhao¹, zeng bing chen^1,2, yu ao chen¹, joerg schmiedmayer¹, and jian wei pan^1,2 — ¹physikalisches institut, universitaet heidelberg, philosophenweg 12, 69120 heidelberg — ²hefei national laboratory for physical sciences at microscale and department of modern physics, university of science and technology of china, hefei, anhui 230026, china

we propose a robust quantum repeater using similar sources as DLCZ scheme, i.e. atomic ensembles and linear optics. Our protocol entails the advantage of two photon interference and requires stable interferometry over only the coherence length of photons which is about 8 orders of magnitude more robust than single photon interference used in DLCZ scheme. Our proposal provides an exciting possiblity for robust and realistic long distance quantum communication.