单态Fission中的时钟跃迁防止自旋退相干
Clock Transitions Guard Against Spin Decoherence in Singlet Fission
摘要：
短相干时间是量子计算和传感应用中的主要障碍。在原子系统中，由所施加的塞曼场中的避免的交叉形成的时钟跃迁（CT）可以显著增加相干时间。我们展示了CT如何抑制分子中量子噪声的内在和外在来源。在自旋极化单重态裂变光产物的电子顺磁共振实验中，两个周期势之间的圆锥交叉形成CT。我们报告一对CT的两个生色团分子的塞曼场强度，分子取向相对于该领域，和分子的几何形状。
英文摘要：
Short coherence times present a primary obstacle in quantum computing and sensing applications. In atomic systems, clock transitions (CTs), formed from avoided crossings in an applied Zeeman field, can substantially increase coherence times. We show how CTs can dampen intrinsic and extrinsic sources of quantum noise in molecules. Conical intersections between two periodic potentials form CTs in electron paramagnetic resonance experiments of the spin-polarized singlet fission photoproduct. We report on a pair of CTs for a two-chromophore molecule in terms of the Zeeman field strength, molecular orientation relative to the field, and molecular geometry.
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