Quantum Memory with a controlled homogeneous splitting
arXiv:1208.0677 · doi:10.1088/1367-2630/15/4/045015
Abstract
We propose a quantum memory protocol where a input light field can be stored onto and released from a single ground state atomic ensemble by controlling dynamically the strength of an external static and homogeneous field. The technique relies on the adiabatic following of a polaritonic excitation onto a state for which the forward collective radiative emission is forbidden. The resemblance with the archetypal Electromagnetically-Induced-Transparency (EIT) is only formal because no ground state coherence based slow-light propagation is considered here. As compared to the other grand category of protocols derived from the photon-echo technique, our approach only involves a homogeneous static field. We discuss two physical situations where the effect can be observed, and show that in the limit where the excited state lifetime is longer than the storage time, the protocols are perfectly efficient and noise-free. We compare the technique to other quantum memories, and propose atomic systems where the experiment can be realized.
submitted to New Journal of Physics, Focus on Quantum Memory
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Cited by in corpus (6)
- Quantum memories: emerging applications and recent advances
- Discerning quantum memories based on electromagnetically-induced-transparency and Autler-Townes-splitting protocols
- Focus on Quantum Memories
- Quantum optical memory protocols in atomic ensembles
- Light-shift modulated photon-echo
- Quantum Storage and Retrieval of Light by Sweeping the Atomic Frequency