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All-optical temporal differentiation in hot standing-wave-dressed atoms

机译:驻波热原子中的全光时态微分

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We propose a scheme to realize all-optical temporal differentiation calculation to input pulse in an inverse Y-type four-level atomic system driven by a strong standing-wave. Two optical blockades are created at individual wavelengths of two probe fields in presence of one single strong standing-wave field. On one hand, ultra-narrow transmission windows are produced for probe pulse field 1 when probe field 2 is so strong as a controlling field in EIT configuration. The system can be designed as a phase-reverter of weak probe field 1 and can perform temporal differentiation calculation to it because a pi phase shift is created. On the other hand, the blockade at probe field 2 can be burst in two-photon resonance configuration when probe field 1 becomes strong and saturated absorption takes effect. So a two-photon switching is also expected in this standing-wave-dressed atomic system. The scheme has a potential for an all-optical transistor in quantum logical circuits.
机译:我们提出了一种在强驻波驱动下的逆Y型四能级原子系统中实现输入脉冲全光时差计算的方案。在一个单一的强驻波场的情况下,在两个探测场的各个波长处创建了两个光学阻挡。一方面,当探测场2如此强大以至于EIT配置中的控制场时,会为探测脉冲场1产生超窄的透射窗口。该系统可以被设计为弱探针场1的相移器,并且可以执行临时差分计算,因为会产生pi相移。另一方面,当探针场1变强且饱和吸收生效时,探针场2处的阻塞可能会以双光子共振结构爆发。因此,在这种驻波整备的原子系统中,也希望实现两光子切换。该方案对于量子逻辑电路中的全光晶体管具有潜力。

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