Towards high-speed optical quantum memories
By K. Reim, J. Nunn, V. Lorenz, B. Sussman, K. C. Lee, N. Langford, Dieter Jaksch, Ian A. Walmsley. 2009
289 citations recorded by the source corpus.
Quantum memories, capable of controllably storing and releasing a photon, are a crucial component for quantum computers1 and quantum communications2. To date, quantum memories3,4,5,6 have operated with bandwidths that limit data rates to megahertz. Here we report the coherent storage and retrieval of sub-nanosecond low-intensity light pulses with spectral bandwidths exceeding 1 GHz in caesium vapour. The novel memory interaction takes place through a far off-resonant two-photon transition in which the memory bandwidth is dynamically generated by a strong control field7,8. This should allow data rates more than 100 times greater than those of existing quantum memories. The memory works with a total efficiency of 15%, and its coherence is demonstrated through direct interference of the stored and retrieved pulses. Coherence times in hot atomic vapours are on the order of microseconds9, the expected storage time limit for this memory. Quantum memories for storing and releasing photons are required for quantum computers and quantum communications. So far, their operational bandwidths have limited data-rates to megahertz. Researchers now demonstrate coherent storage and retrieval of subnanosecond low-intensity light pulses with spectral bandwidths exceeding 1 GHz.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/cdfd535196a99716dacd21e2dd17ed94eb8f5f38
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Artificial Intelligence
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Quantum memories: emerging applications and recent advances (2015, background): “l selectivity. Temporal engineering of the Raman coupling underlies the Raman quantum memory protocol [14,15], which is the basis for the room-temperature implementation of broadband quantum memories [106,129,130,147]. Temporal mode selectivity in Raman based systems led to the proposal and demonstr”