论文标题
复合脉冲的有效且稳健的手性分辨率
Efficient and robust chiral resolution by composite pulses
论文作者
论文摘要
我们介绍了一种使用驱动闭环三态量子系统的三个脉冲的序列检测手性分子的方法。左手和右手的对映体具有相同的光学特性（过渡频率和过渡偶极矩），唯一的区别是其中一个耦合的符号。我们确定了十二个不同的谐振脉冲序列，其手性分辨率具有完美的对比度。在所有这些中，第一个和第三个脉冲是$π/2 $ - 泵，中间脉冲是$π$ -Pulse。此外，相对于其他两个，这三个脉冲之一必须具有$π/2 $的相移。提出的手性分辨率技术的简单性可以通过复合脉冲替换单个$π/2 $和$π$ - 泵，从而直接扩展到更有效，更健壮的实现。我们通过复合脉冲来介绍手性分辨率的特定例子，这些脉冲可以补偿脉冲区域中的误差和驱动场的失沟。
We introduce a method for detection of chiral molecules using sequences of three pulses driving a closed-loop three-state quantum system. The left- and right-handed enantiomers have identical optical properties (transition frequencies and transition dipole moments) with the only difference being the sign of one of the couplings. We identify twelve different sequences of resonant pulses for which chiral resolution with perfect contrast occurs. In all of them the first and third pulses are $π/2$-pulses and the middle pulse is a $π$-pulse. In addition, one of the three pulses must have a phase shift of $π/2$ with respect to the other two. The simplicity of the proposed chiral resolution technique allows for straightforward extensions to more efficient and more robust implementations by replacing the single $π/2$ and $π$-pulses by composite pulses. We present specific examples of chiral resolution by composite pulses which compensate errors in the pulse areas and the detuning of the driving fields.
