Optimal coherence via adiabatic following
نویسنده
چکیده
We propose a new method for creating an optimal coherence in a two-level system (TLS) based on adiabatic following. Optimal coherence is achieved by choosing the time-dependent phase of the pulse that provides vanishing field-TLS detuning dðtÞ at central time when the pulse amplitude reaches maximum. For example, dðtÞ 1⁄4 d0ð1 expððt t0Þ=s0ÞÞ for t 6 t0 and d 1⁄4 0 for t > t0. The pulse envelope used in calculations has Gaussian form such that the Rabi frequency is XRðtÞ 1⁄4 XR expð ðt t0Þ=s0ÞÞ, where s0 is the pulse duration. 2009 Elsevier B.V. All rights reserved.
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