Toward Continuous-Wave Regime Teleportation for Light Matter Quantum Relay Stations

Florian Kaiser (1) , Amandine Issautier (1) , Lutfi Arif Ngah (1) , Djeylan Aktas (1) , Tom Delord (2) , Sébastien Tanzilli (1)

1 LPMC - Laboratoire de physique de la matière condensée
2 Phys-ENS - Laboratoire de Physique de l'ENS Lyon

We report a teleportation experiment involving narrowband entangled photons at 1560 nm and qubit photons at 795 nm emulated by faint laser pulses. A nonlinear difference frequency generation stage converts the 795 nm photons to 1560 nm in order to enable interference with one photon out of the pairs, i.e., at the same wavelength. The spectral bandwidth of all involved photons is of about 25 MHz, which is close to the emission bandwidth of emissive quantum memory devices, notably those based on ensembles of cold atoms and rare earth ions. This opens the route towards the realization of hybrid quantum nodes, i.e., combining quantum memories and entanglement-based quantum relays exploiting either a synchronized (pulsed) or asynchronous (continuous-wave) scenario.

Mots clés: Quantum teleportation; quantum communication; nonlinear optical processes; coherent quantum interface; pho-tonic entanglement

Domaines: Physique Quantique [quant-ph]

Florian Kaiser, Amandine Issautier, Lutfi Arif Ngah, Djeylan Aktas, Tom Delord, et al.. Toward Continuous-Wave Regime Teleportation for Light Matter Quantum Relay Stations. IEEE Journal of Selected Topics in Quantum Electronics, 2015, 21 (3), pp.6400709. ⟨10.1109/JSTQE.2014.2381465⟩. ⟨hal-01161448⟩