Quantum control of I2 in the gas phase and in condensed phase solid Kr matrix
Quantum control of I2 in the gas phase and in condensed phase solid Kr matrix
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DOI：
10.1063/1.473906
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发表时间：
1997-05
影响因子：
4.4
通讯作者：
C. Bardeen;J. Che;K. Wilson;V. Yakovlev;V. Apkarian;C. Martens;R. Zadoyan;B. Kohler;M. Messina
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文献类型：
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作者：
C. Bardeen;J. Che;K. Wilson;V. Yakovlev;V. Apkarian;C. Martens;R. Zadoyan;B. Kohler;M. Messina
我们提供了气体和凝聚相环境中量子控制示例的实验结果和理论模拟。具体来说，我们表明，当用适当定制的超快光脉冲制备波包时，无论是气相 I2 还是嵌入冷 Kr 基质中的 I2，振动波包在非谐势中的自然传播都可以被抵消。我们使用激光诱导荧光来探测成形波包的演化。在气相中，在 313 K 下，我们表明分子旋转在确定所准备的叠加态的局部化方面发挥着重要作用。在模拟中，使用精确的量子动力学和近乎经典的理论来考虑旋转的作用。对于凝聚相，由于系统的维数无法进行精确的量子模拟，因此使用近乎经典的理论来模拟过程并解释数据。数值模拟和实验结果都表明，适当的...
We present experimental results and theoretical simulations for an example of quantum control in both gas and condensed phase environments. Specifically, we show that the natural spreading of vibrational wavepackets in anharmonic potentials can be counteracted when the wavepackets are prepared with properly tailored ultrafast light pulses, both for gas phase I2 and for I2 embedded in a cold Kr matrix. We use laser induced fluorescence to probe the evolution of the shaped wavepacket. In the gas phase, at 313 K, we show that molecular rotations play an important role in determining the localization of the prepared superposition. In the simulations, the role of rotations is taken into account using both exact quantum dynamics and nearly classical theory. For the condensed phase, since the dimensionality of the system precludes exact quantum simulations, nearly classical theory is used to model the process and to interpret the data. Both numerical simulations and experimental results indicate that a properly ...