We develop a non-adiabatic generalization of holonomic quantum computation in which high-speed universal gates can be realized by using non-Abelian geometric phases. show how set one- and two-qubit implemented utilizing optical transitions generic three-level $\Lambda$ configuration. Our scheme opens up for on qubits characterized short coherence times.

Studies examining the effects of anthropogenic habitat fragmentation on both neutral and adaptive genetic variability are still scarce. We compared tadpole fitness-related traits (viz. survival probability body size) among populations common frog (Rana temporaria) from fragmented (F) continuous (C) habitats that differed significantly in population sizes (C > F) diversity markers. Using data garden experiments, we found a significant positive relationship between mean values fitness related...

Unpredictability, or randomness, of the outcomes measurements made on an entangled state can be certified provided that statistics violate a Bell inequality. In standard scenario where each party performs single measurement its share system, only finite amount at most $4 log_2 d$ bits, from pair particles dimension $d$. Our work shows this fundamental limitation overcome using sequences (nonprojective) same system. More precisely, we prove one certify any random bits qubits in pure as...

The robustness to different sources of error the scheme for non-adiabatic holonomic gates proposed in [New J. Phys. {\bf 14}, 103035 (2012)] is investigated. Open system effects as well errors driving fields are considered. It found that can be made resilient by using sufficiently short pulses. principal limit how pulses given breakdown quasi-monochromatic approximation. A comparison with resilience adiabatic carried out.

We investigate the relation between two approaches to characterization of quantum Markovianity, divisibility and lack information backflow. show that a bijective dynamical map is completely positive divisible if only monotonic nonincrease distinguishability observed for equiprobable states evolving system an ancilla. Moreover, our proof constructive: given any such not divisible, we give explicit construction that, when taken with same priori probability, exhibit Finally, while ancilla...

Abstract Human‐caused habitat destruction and modification constitute one of the largest threats to population persistence biodiversity, are also suspected be major cause behind global decline amphibian populations. We assessed potential role agriculture‐related fragmentation on size genetic variability in common frog ( Rana temporaria ) by recording occurrence, density diversity three geographically disparate regions Sweden – each containing landscapes high low agricultural activity related...

Abstract The amount of genetic variability at neutral marker loci is expected to decrease, and the degree differentiation among populations increase, as a negative function effective population size. We assessed patterns seven microsatellite in common frog ( Rana temporaria ) hierarchical sampling scheme involving three regions (208–885 km apart), subregions within nine (5–20 apart) subregions, related estimates variation local size estimates. Genetic decreased significantly with increasing...

Abstract In this paper we employ recently developed statistical and molecular tools to analyse the population history of Tanzanian leopard ( Panthera pardus ), a large solitary felid. Because their lifestyle little is known past or present dynamics. Eighty‐one individuals were scored at 18 microsatellite loci. Overall, levels heterozygosity high (0.77 ± 0.03), with small heterozygote deficiency (0.06 0.03). Effective size N e ) was calculated be 38 000–48 000. A : ratio 0.42 (average from...

Abstract Amphibian species inhabiting agricultural areas may be exposed to pesticides during their aquatic larval phase. We tested the toxicity of six commonly used on Rana temporaria spawn and tadpoles. In acute tests, tadpoles were relatively high concentrations azoxystrobin, cyanazine, esfenvalerate, MCPA ([4‐chloro‐2‐methylphenoxy] acetic acid), permethrin, pirimicarb for 72 h. Chronic exposure tests performed from fertilization metamorphosis with permethrin at similar those found in...

We investigate the ability of correlation measures to witness non-Markovian open quantum system dynamics. It is shown that mutual information and any entanglement measure between an ancilla do not all A introduced, it proven that, in enlarged setting with two ancillary systems, this detects almost dynamics, except possibly a zero-measure set dynamics non-bijective finite time-intervals. Our proof constructive provides different initial states detecting evolutions. These are separable some...

Single particle profiling (SPP) is a unique methodology to study nanoscale bioparticles such as liposomes, lipid nanoparticles, extracellular vesicles, and lipoproteins in single high throughput manner. The initial version requires the photon counting modules for data acquisition, which limits its adoptability. Here, we present imaging-based SPP (iSPP) that can be performed by imaging spot over time common mode with confocal detectors. We also provide user-friendly software graphical user...

Global phase factors of topological origin, resulting from cyclic local $\mathit{SU}$ evolution, called phases, were first described in [Phys. Rev. Lett. 90, 230403 (2003)], the case entangled qubit pairs. In this paper we investigate phases multiqubit systems as result $\mathit{SU}(2)$ evolution. These originate structure orbits and are an attribute most systems. We discuss relation between stochastic operations classical communication (SLOCC)-invariant polynomials give examples where...

Non-Markovian effects in an open-system dynamics are usually associated to information backflows from the environment system. However, way these manifest and how detect them is unclear. A natural approach study backflow terms of correlations evolving system displays with another unperturbed during dynamics. In this work, we power witness non-Markovian using different correlation measures. We identify simple where failure completely positive divisibility one-to-one correspondence a backflow....

We explore a geometric approach to generating local $\text{SU}(2)$ and $\text{SL}(2,\mathbb{C})$ invariants for collection of qubits inspired by lattice gauge theory. Each invariant or ``gauge'' is associated with distinct closed path (or plaquette) joining some all the qubits. In theory, points are discrete space-time points, transformations between defined parallel transporters, observable particular given Wilson loop. our qubits, link correlations them, observable, path, also looplike...

We investigate the connection between concept of affine balancedness (a-balancedness) introduced by M. Johansson et al. [Phys. Rev. A 85, 032112 (2012)] and polynomial local SU invariants appearance topological phases, respectively. It is found that different types a-balancedness correspond to analogously how balancedness, as defined A. Osterloh J. Siewert, [New Phys. 12, 075025 (2010)], special linear (SL) invariants. These distinguish states exhibiting phases. In case three qubits, kinds...

We propose an experiment to observe the topological phases associated with cyclic evolutions, generated by local SU(2) operations, on three-qubit entangled states prepared different degrees of freedom photon pairs. The reveal nontrivial structure orbits. describe how prepare showing and discuss their relation entanglement. In particular, presence a $\ensuremath{\pi}/2$ phase shift is signature genuine tripartite entanglement in sense that it does not exist for two-qubit systems.

In [N. Friis, New J. Phys. 18, 033014 (2016)] the non-relativistic description of fermions is considered and in particular role parity superselection rule relation to characterization entanglement. An argument based on spin-statistics connection presented as a physical motivation for rule. Since spin statistics was derived context relativistic quantum mechanics it argued that inclusion motivated by Lorentz invariance. Based this further fermionic Quantum Information theory special relativity...

Quantum-chemical calculations at the B3LYP/6-31+G(d,p) hybrid density functional level reveal that reverse polarization, i.e., reduction of partial positive charge Si by π-electron donation from ortho and/or para substituents, is a viable tool to increase thermodynamic stability silabenzenes. With 2,4,6-triamino substitution silabenzene dominated zwitterionic resonance structures place negative on Si, and this nearly equally stable as monomer it dimer. Ipso silyl further increases so...

The information encoded into an open quantum system that evolves under a Markovian dynamics is always monotonically non-increasing. Nonetheless, for given quantifier of the contained in system, it general not clear if all non-Markovian possible to observe non-monotonic evolution this quantity, namely backflow. We address problem by considering correlations finite-dimensional bipartite systems. For purpose, we consider class correlation measures and prove there exists at least one element...

We investigate the relation between two approaches to characterisation of quantum Markovianity, divisibility and lack information backflow. show that a bijective dynamical map is completely-positive-divisible if only monotonic non-increase distinguishability observed for equiprobable states evolving system an ancilla. Moreover our proof constructive: given any such not completely-positive-divisible, we give explicit construction that, when taken with same priori probability, exhibit...

In this paper we describe a method for finding polynomial invariants under Stochastic Local Operations and Classical Communication (SLOCC), system of delocalized fermions shared between different parties, with global particle number conservation as the only constraint. These can be used to construct entanglement measures types in such system. It is shown that invariants, constructed from them, take nonzero value if state allows observation Bell-nonlocal correlations. Invariants kind are...