Analysis of Quantum Light Memory in Atomic Systems
arXiv:quant-ph/0403102 · doi:10.1088/1464-4266/7/6/001
Abstract
We extend the theory to describe the quantum light memory in type atoms with considering (lower levels coherency decay rate) and detuning for the probe and the control fields. We obtain that with considering these parameters, group velocity of the probe pulse does not tend to zero by turning off the control field. We show that there are considerable decay for the probe pulse and the stored information. Also, it is inferred that the light field does not tend to zero when the control field is turned off. In addition, we obtain that in the off-resonance case there is considerable distortion of the output light pulse (with fast oscillations) that destroys the stored information. Then we present the limitations on detuning (bandwidths) of the probe and the control fields to achieve negligible distortion. We finally present the numerical calculations and compare them with obtained analytical results.
References in corpus (8)
- Storage of light in atomic vapor
- Dark-State Polaritons in Electromagnetically Induced Transparency
- Ultra-Slow Light and Enhanced Nonlinear Optical Effects in a Coherently Driven Hot Atomic Gas
- Quantum memory for photons: I. Dark state polaritons
- Quantum Memory for Light
- How to Trap Photons? Storing Single-Photon Quantum States in Collective Atomic Excitations
- Two-photon linewidth of light "stopping" via electromagnetically induced transparency
- Quantum theory of resonantly enhanced four-wave mixing: mean-field and exact numerical solutions