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• W2598001103 abstract "Over the last decade, counterintuitive optical effects using electromagnetically induced transparency EIT have gained considerable attention 1–3 . The essence of EIT is to create a narrow transparency window in an otherwise opaque medium using quantum interference. Noting Fig. 1, in a threestate atomic medium, the quantum interference is achieved with a laser beam that couples states 2 and 3 . An important feature of EIT is the steep dispersion experienced by the probe laser beam at the point of vanishing absorption. This steep dispersion is the essence of slow light 4–6 , stopped light 7–9 , and giant nonlinearities effective at low light levels 10–14 . An important practical application of EIT is to optical information processing. EIT provides a unique way to controllably delay and coherently store light pulses. However, the narrow transparency window of EIT puts stringent limitations on the bandwidth of the light pulses that can be slowed and stopped inside the medium. A key figure of merit that is usually discussed in this context is the time-delaybandwidth product which is obtained by multiplying the bandwidth of the optical pulse with the delay time of the pulse while propagating through the EIT medium. The largest time-delay-bandwidth product that has been experimentally demonstrated using EIT is 5. Recently, Dutton and colleagues 15 and Zubairy and colleagues 16 have suggested schemes to overcome this limitation. The key idea of these schemes is to spectrally disperse an input optical pulse and independently delay each Fourier component of the pulse. Experimental progress towards demonstrating these schemes has also been reported 17,18 . In this Rapid Communication we extend the suggestion of Harris et al. 19 and demonstrate a scheme that allows large time delays for large bandwidth optical pulses. The key idea of our scheme is to use matched Fourier components for the probe and coupling laser beams in an EIT medium. Before we proceed with a detailed description of our scheme, we would like to summarize the well-known results for the interaction of two laser beams with a three-state system. Noting Fig. 1, in the perturbative limit where the probe laser beam p is much weaker than the coupling beam c, the susceptibility for the probe wave is" @default.
• W2598001103 created "2017-04-07" @default.
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• W2598001103 date "2007-06-09" @default.
• W2598001103 modified "2023-09-23" @default.
• W2598001103 title "Electromagnetically Induced Transparency with Broadband Laser Pulses" @default.
• W2598001103 hasPublicationYear "2007" @default.
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