On-demand control of photon echoes far exceeding the spin coherence constraint via coherence swapping between optical and spin transitions
arXiv:1010.4870
Abstract
Using on-demand coherence conversion via optical locking in conventional stimulated (three-pulse) photon echoes, ultralong, ultraefficient photon storage has been observed in a rare-earth Pr3+ doped Y2SiO5, where storage time is several orders of magnitude longer and retrieval efficiency is enhanced by fifty times. Compared with the same method applied to two-pulse photon echoes for a rephasing halt, use of spectral grating in the stimulated photon echoes offers a phase-independent coherence conversion between optical and spin states. Eventually an ultralong spin population decay-dependent photon storage protocol is achieved by applying optical locking to a spectral grating in conventional stimulated photon echoes. The present breakthrough in both photon storage time and retrieval efficiency opens a door to long-distance quantum communications utilizing quantum repeaters.
8 pages, 4 figures
References in corpus (13)
- Experimental demonstration of quantum memory for light
- Storage and retrieval of single photons transmitted between remote quantum memories
- Mapping photonic entanglement into and out of a quantum memory
- A solid state light-matter interface at the single photon level
- Towards high-speed optical quantum memories
- Demonstration of atomic frequency comb memory for light with spin-wave storage
- Photon Echoes Produced by Switching Electric Fields
- Gradient Echo Quantum Memory for Light using Two-level Atoms
- No-cloning theorem and teleportation criteria for quantum continuous variables
- Optimal light storage with full pulse shape control
- Optimal approach to quantum communication using dynamic programming
- On the impossibility of faithfully storing single-photons with the three-pulse photon echo
- Phase Locked Photon Echoes for Near-Perfect Retrieval Efficiency and Extended Storage Time