UNIGE document Scientific Article
previous document  unige:36618  next document
add to browser collection

Precision requirements for spin-echo-based quantum memories

Heshami, Khabat
Published in Physical review, A, Atomic, molecular, and optical physics. 2011, vol. 83, no. 3
Abstract Spin-echo techniques are essential for achieving long coherence times in solid-state quantum memories for light because of inhomogeneous broadening of the spin transitions. It has been suggested that unrealistic levels of precision for the radio-frequency control pulses would be necessary for successful decoherence control at the quantum level. Here we study the effects of pulse imperfections in detail, using both a semiclassical and a fully quantum-mechanical approach. Our results show that high efficiencies and low noise-to-signal ratios can be achieved for the quantum memories in the single-photon regime for realistic levels of control pulse precision. We also analyze errors due to imperfect initial-state preparation (optical pumping), showing that they are likely to be more important than control pulse errors in many practical circumstances. These results are crucial for future developments of solid-state quantum memories.
Full text
Article (Published version) (234 Kb) - public document Free access
(ISO format)
HESHAMI, Khabat et al. Precision requirements for spin-echo-based quantum memories. In: Physical review, A, Atomic, molecular, and optical physics, 2011, vol. 83, n° 3. doi: 10.1103/PhysRevA.83.032315 https://archive-ouverte.unige.ch/unige:36618

553 hits



Deposited on : 2014-05-13

Export document
Format :
Citation style :