The Electron Spin Phase Memory Decay of Stable Radical Embedded in Glassy Solvent Matrices: Nuclear Spin Bath Model

<pre>We present a new protocol for predicting the phase memory decay/decoherence profiles of electron spin of organic radical molecules embedded in glassy organic solvent matrices at low temperatures. In this approach the microscopic configurations of various glassy solvent matrix systems with nitroxyl radical embedded are prepared using molecular dynamics simulations and simulated annealing. Nuclear spin bath models of embedded radical electron spin decoherence are built for each sample obtained from these configurations. Decoherence profiles under various dynamical decoupling pulse sequences are obtained from these nuclear spin bath models using the cluster correlation expansion method. Our results reflect well the long range disordering nature of glassy structures and show good agreement with their experimental counterparts reported in literature for a variety of organic solvents.</pre>

The Electron Spin Phase Memory Decay of Stable Radical Embedded in Glassy Solvent Matrices: Nuclear Spin Bath Model

<pre>We present a new protocol for predicting the phase memory decay/decoherence profiles of electron spin of organic radical molecules embedded in glassy organic solvent matrices at low temperatures. In this approach the microscopic configurations of various glassy solvent matrix systems with nitroxyl radical embedded are prepared using molecular dynamics simulations and simulated annealing. Nuclear spin bath models of embedded radical electron spin decoherence are built for each sample obtained from these configurations. Decoherence profiles under various dynamical decoupling pulse sequences are obtained from these nuclear spin bath models using the cluster correlation expansion method. Our results reflect well the long range disordering nature of glassy structures and show good agreement with their experimental counterparts reported in literature for a variety of organic solvents.</pre>

Amination of the Gd@C82 endohedral fullerene: tunable substitution effect on quantum coherence behaviors

Amination of the endohedral fullerene Gd@C82 exhibits enhanced quantum phase memory time and tunable substitution effect for quantum information processing.

Tm filtering by 1H-methyl labeling in a deuterated protein for pulsed double electron–electron resonance EPR

Methyl protonation in a deuterated protein background is used to assign DEER-derived multimodal distance distributions by phase-memory relaxation time filtering.

Chromium(iii)-based potential molecular quantum bits with long coherence times

[Cr(ddpd)2]3+ displays record phase memory times of up to 8.4 μs at 7 K. This is likely enabled by the very small zero-field splitting of D = 0.18 cm−1 which is due to the ligand field quartet state lying at very high energy.