Fault-tolerant computing with single-qudit encoding in a molecular spin.

We show that molecular spins represent ideal materials to realize a fault-tolerant quantum computer, in which all quantum operations include protection against leading (dephasing) errors. This is achieved by pursuing a qudit approach, in which logical error-corrected qubits are encoded in a single multi-level molecule (a qudit) and not in a large collection of two-level systems, as in standard codes. By preventing such an explosion of resources, this emerging way of thinking about quantum error correction makes its actual implementation using molecular spins much closer.

Age-Dependency of Cardiometabolic Risk and Protective Factors in Females Living in a Countryside Area of Switzerland.

We investigated the effect of age on cardiometabolic risk and protective factors in females living in a countryside area of Switzerland. For this cross-sectional analysis, data from 268 female adults, who live in two neighboring countryside villages in Italian-speaking Switzerland were retained. 89 study participants were premenopausal, 82 climacteric and 97 postmenopausal.

Multipartite Entanglement in Topological Quantum Phases.

We witness multipartite entanglement in the ground state of the Kitaev chain-a benchmark model of a one dimensional topological superconductor-also with variable-range pairing, using the quantum Fisher information. Phases having a finite winding number, for both short- and long-range pairing, are characterized by a power-law diverging finite-size scaling of multipartite entanglement. Moreover, the occurring quantum phase transitions are sharply marked by the divergence of the derivative of the quantum Fisher information, even in the absence of a closing energy gap.

Kitaev chains with long-range pairing.

We propose and analyze a generalization of the Kitaev chain for fermions with long-range p-wave pairing, which decays with distance as a power law with exponent α. Using the integrability of the model, we demonstrate the existence of two types of gapped regimes, where correlation functions decay exponentially at short range and algebraically at long range (α > 1) or purely algebraically (α < 1). Most interestingly, along the critical lines, long-range pairing is found to break conformal symmetry for sufficiently small α.

Propofol for benzodiazepine-refractory alcohol withdrawal in a non-mechanically ventilated patient.

Long-term alcohol use confers neurochemical changes in response to alcohol's exogenous inhibitory effects. Downregulation and decreased sensitivity of γ-aminobutyric acid receptors render benzodiazepines less effective at controlling psychomotor agitation. Propofol has been reported to have successfully relieved alcohol withdrawal syndrome (AWS) symptoms in part because of activation of γ-aminobutyric acid channels in combination with antagonism of excitatory amino acids such as N-methyl-D-aspartate.