论文标题
刚体裂变中的纠缠，自旋极化激子在刚性二聚体中
Entangled, Spin-polarized Excitons from Singlet Fission in a Rigid Dimer
论文作者
论文摘要
Singlet Fission是将单元激子分为biexciton的过程，有望在量子信息方面。我们报告了时间分辨的电子顺磁共振共振测量值，TIPS-BP1 $'$，旨在表现出对特定的磁性自旋级别的强烈状态选择性放松。所得的光泵送“自旋极化”是合奏中几乎纯净的初始状态。长寿命的自旋连贯性内在调节信号，允许一种新的测量方案，该方案实质上消除了磁共振光谱中的噪声和不确定性。具有最少光谱参数数量的非绝热过渡理论可以对光谱进行定量分配和解释。刚性，共价二聚体，TIPS-BP1 $'$，在温度下持续旋转连贯，远高于常规量子硬件中使用的温度。
Singlet fission, a process that splits a singlet exciton into a biexciton, has promise in quantum information. We report time-resolved electron paramagnetic resonance measurements on a molecule, TIPS-BP1$'$, designed to exhibit strongly state-selective relaxation to specific magnetic spin sublevels. The resulting optically pumped "spin polarization" is a nearly pure initial state from the ensemble. The long-lived spin coherences modulate the signal intrinsically, allowing a new measurement scheme that substantially removes noise and uncertainty in the magnetic resonance spectra. A nonadiabatic transition theory with a minimal number of spectroscopic parameters allows the quantitative assignment and interpretation of the spectra. The rigid, covalently bound dimer, TIPS-BP1$'$, supports persistent spin coherences at temperatures far higher than those used in conventional quantum hardware.
