Slow-light propagation using mode locking of spin precession in quantum dots
Abstract
We propose using mode locking to enable coherent nonlinear optical effects in inhomogenously broadened spin ensembles. We carry out detailed calculations for quantum dot systems in which increased spin coherence via mode locking has been recently observed [A. Greilich , ScienceSCIEAS0036-807510.1126/science.1128215 313, 341 (2006); SCIEAS0036-807510.1126/science.1146850 317, 1896 (2007)]. We show how, in the presence of spin locking, a strong pulse-matching effect occurs, providing a powerful tool for high-bandwidth linear optical processing. We then go on to study “slow light” in this system and show that high-bandwidth pulses can be controllably delayed by a time comparable to the pulse width.
- Publication:
-
Physical Review A
- Pub Date:
- November 2010
- DOI:
- 10.1103/PhysRevA.82.053823
- Bibcode:
- 2010PhRvA..82e3823S
- Keywords:
-
- 42.50.Gy;
- 42.50.Md;
- 42.50.Nn;
- 78.67.Hc;
- Effects of atomic coherence on propagation absorption and amplification of light;
- electromagnetically induced transparency and absorption;
- Optical transient phenomena: quantum beats photon echo free-induction decay dephasings and revivals optical nutation and self-induced transparency;
- Quantum optical phenomena in absorbing dispersive and conducting media;
- Quantum dots