Ultrafast manipulation of electron spin coherence in quantum wells

J. A. Gupta, D. D. Awschalom, R. Knobel, N. Samarth

Research output: Contribution to journalArticlepeer-review


A recently developed technique is reviewed with the potential for all-optical coherent control over electron spins in semiconductors. In these experiments, ultrafast laser pulses "tip" electron spins by generating effective magnetic fields via the optical Stark effect. Measurements of Stark shifts have provided estimates of the net tipping angle as a function of tipping pulse energy, intensity, and polarization. Background contributions to the measured tipping angle arise from the undesirable excitation of additional carriers by the tipping pulse.

Original languageEnglish (US)
Pages (from-to)2930-2935
Number of pages6
JournalInternational Journal of Modern Physics B
Issue number20-22
StatePublished - Aug 30 2002

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics


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