2007/03/19 by V. Boyer, Vincent Boyer, C. F. McCormick +4 · 137 citations
Physics and Astronomy · #Amplifier #Atomic and Subatomic Physics Research #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Context (archaeology) #Distortion (music) #Four-wave mixing #Laser #Materials science #Mixing (physics) #Nonlinear optics #Optics #Optoelectronics #Physics #Pulse (music) #Quantum #Quantum mechanics #Quantum optics and atomic interactions #Tensor (intrinsic definition) #quant-ph
paper · pdf · doi:10.1103/physrevlett.99.143601
published in Physical Review Letters 99(14), 143601 (American Physical Society) · 5 pages, 4 figures
arxiv created 2007/03/19 · openalex publication_date 2007/10/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have observed the ultraslow propagation of matched pulses in nondegenerate four-wave mixing in a hot atomic vapor. Probe pulses as short as 70 ns can be delayed by a tunable time of up to 40 ns with little broadening or distortion. During the propagation, a probe pulse is amplified and generates a conjugate pulse which is faster and separates from the probe pulse before getting locked to it at a fixed delay. The precise timing of this process allows us to determine the key coefficients of the susceptibility tensor. The fact that the same configuration has been shown to generate quantum correlations makes this system very promising in the context of quantum information processing.