Abstract Optically induced nuclear spin–spin coupling in semiconductors is expected to serve for gate operations nuclear-magnetic-resonance (NMR) quantum computations. However, not much known about its characteristics. In this study, we investigate optically couplings GaAs via double-resonance spin-echo decay experiments under optical pumping. The squared echo rate $$\left( {1/T_2} \right)^2$$ ...

Magnetic resonance fingerprinting (MRF) is a relatively new multi-parametric quantitative imaging method that involves two-step process: (i) reconstructing series of time frames from highly-undersampled non-Cartesian spiral k-space data and (ii) pattern matching using the to infer tissue properties (e.g., \(T_1\) \(T_2\) relaxation times). In this paper, we introduce novel end-to-end deep learn...

Lead halide perovskites show remarkable performance when used in photovoltaic and optoelectronic devices. However, the peculiarities of light-matter interactions these materials general are far from being fully explored experimentally theoretically. Here we specifically address energy level order optical transitions demonstrate photon echos a methylammonium lead triiodide single crystal, thereb...

The ability to identify and characterize homogeneous inhomogeneous dephasing processes is crucial in solid-state quantum optics. In particular, spectral diffusion leading line broadening difficult evidence when the associated timescale shorter than inverse of photon detection rate. Here, we show that a combination resonant laser excitation second-order correlations allows access such fast dynam...

Diakonov theory of quantum gravity, in which tetrads emerge as the bilinear combinations fermionis fields,\cite{Diakonov2011} suggests that general relativity metric may have dimension 2, i.e. $[g_{\mu\nu}]=1/[L]^2$. Several other approaches to including model superplastic vacuum and $BF$-theories gravity support this suggesuion. The important consequence such is all diffeomorphism invariant qu...

Optically active defects in solids with accessible spin states are promising candidates for solid state quantum information and sensing applications. To employ these as building blocks, coherent manipulation of their is required. Here we realize control ensembles boron vacancy (V$_B^-$) centers hexagonal nitride (hBN). Specifically, by applying pulsed resonance protocols, measure spin-lattice r...

Understanding and protecting the coherence of individual quantum systems is a central challenge in science technology. Over last decades, rich variety methods to extend have been developed. A complementary approach look for naturally occurring that are inherently protected against decoherence. Here, we show pairs identical nuclear spins solids form intrinsically long-lived systems. We study thr...

Abstract Given finite configurations $P_1, \dots , P_n \subset \mathbb {R}^d$ let us denote by $\mathbf {m}_{\mathbb {R}^d}(P_1, P_n)$ the maximum density a set $A \subseteq can have without containing congruent copies of any $P_i$ . We will initiate study this geometrical parameter, called independence considered configurations, and give several results we believe are interesting. For instance...