Storage and retrieval of light pulses at moderate powers

Storage and retrieval of light pulses in atomic media with “slow” and “fast” light

We report experimental evidence that light storage, understood as the controlled release of a light pulse by an atomic sample dependent on the past presence of a writing pulse, is not restricted to small-group-velocity media but can also occur in a negative-group-velocity medium. We present a numerical modeling in close agreement with our observations and a simple physical picture applicable to...

Phase retrieval and compression of low-power white-light pulses

We characterize and compress sub-nJ visible white-light continuum (WLC) pulses generated by self-phase modulation in yttrium aluminium garnet. The spectral phase is retrieved by spectrally resolving the transient reflectivity from an optically-excited transition metal oxide. This measured phase is compensated by applying the appropriate distortion to a deformable mirror. By comparing the respon...

Modeling storage and retrieval of memories in the brain

We have proposed a neural network model that stores the incoming information after orthogonalizing it in the same manner as vectors are orthogonalized. The scheme enables the brain to compare a new informational system with those in the memory and store its similarities and differences with the old memories in an economical manner. This allows the brain to have an enormous capacity and yet the ...

Modeling storage and retrieval of memories in the brain

We have proposed a neural network model that stores the incoming information after orthogonalizing it in the same manner as vectors are orthogonalized. The scheme enables the brain to compare a new informational system with those in the memory and store its similarities and differences with the old memories in an economical manner. This allows the brain to have an enormous capacity and yet the ...

Theory of Light – Atomic Ensemble Interactions: Entanglement, Storage, and Retrieval