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Entanglement

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https://www.readbyqxmd.com/read/28211902/simultaneous-observation-of-particle-and-wave-behaviors-of-entangled-photons
#1
Zhong-Xiao Man, Yun-Jie Xia, Nguyen Ba An
We theoretically study wave-particle duality of two entangled photons in the spirit of quantum version of delayed-choice experiments using Hadamard gate controlled by the quantum state of an ancilla and show that the two photons may globally exhibit particle-like, wave-like or simultaneously both particle-like and wave-like behavior. We prove that the obtained results cannot be satisfactorily explained by any hidden-variable theory. We also propose an efficient and experimentally feasible scheme without using any ancilla and controlled-gates to directly (i...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28208455/entanglement-entropy-of-the-q%C3%A2-4-quantum-potts-chain
#2
Péter Lajkó, Ferenc Iglói
The entanglement entropy S is an indicator of quantum correlations in the ground state of a many-body quantum system. At a second-order quantum phase-transition point in one dimension S generally has a logarithmic singularity. Here we consider quantum spin chains with a first-order quantum phase transition, the prototype being the Q-state quantum Potts chain for Q>4 and calculate S across the transition point. According to numerical, density matrix renormalization group results at the first-order quantum phase transition point S shows a jump, which is expected to vanish for Q→4^{+}...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208450/thermal-effects-in-dislocation-theory-ii-shear-banding
#3
J S Langer
The thermodynamic dislocation theory presented in previous papers is used here to describe shear-banding instabilities. Central ingredients of the theory are a thermodynamically defined effective configurational temperature and a formula for the plastic strain rate determined by thermally activated depinning of entangled dislocations. This plastic strain rate is extremely sensitive to variations of the stress and the ordinary temperature. As a result of this sensitivity, the system undergoes rapid shear banding instabilities when ordinary thermal relaxation is slow...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208401/supersymmetric-spin-chains-with-nonmonotonic-dispersion-relation-criticality-and-entanglement-entropy
#4
José A Carrasco, Federico Finkel, Artemio González-López, Miguel A Rodríguez
We study the critical behavior and the ground-state entanglement of a large class of su(1|1) supersymmetric spin chains with a general (not necessarily monotonic) dispersion relation. We show that this class includes several relevant models, with both short- and long-range interactions of a simple form. We determine the low temperature behavior of the free energy per spin, and deduce that the models considered have a critical phase in the same universality class as a (1+1)-dimensional conformal field theory (CFT) with central charge equal to the number of connected components of the Fermi sea...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208061/dual-drug-release-from-hydrogels-covalently-containing-polymeric-micelles-that-possess-different-drug-release-properties
#5
Mari Murata, Yusuke Uchida, Taku Takami, Tomoki Ito, Ryosuke Anzai, Seiichi Sonotaki, Yoshihiko Murakami
In the present study, we designed hydrogels for dual drug release: the hydrogels that covalently contained the polymeric micelles that possess different drug release properties. The hydrogels that were formed from polymeric micelles possessing a tightly packed (i.e., well-entangled) inner core exhibited a higher storage modulus than the hydrogels that were formed from the polymeric micelles possessing a loosely packed structure. Furthermore, we conducted release experiments and fluorescent observations to evaluate the profiles depicting the release of two compounds, rhodamine B and auramine O, from either polymeric micelles or hydrogels...
February 9, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28198068/validation-of-the-psychometric-properties-of-cognitive-fusion-questionnaire-a-study-of-the-factorial-validity-and-factorial-invariance-of-the-measure-among-osteoarticular-disease-diabetes-mellitus-obesity-depressive-disorder-and-general-populations
#6
Joana Alexandra Costa, João Marôco, José Pinto-Gouveia
BACKGROUND: The cognitive fusion questionnaire (CFQ) is a self-report questionnaire that assesses the extent to which individuals are psychologically entangled with, and dominated by the form-content of their thoughts. The aim of this study was to replicate the factor structure of CFQ in osteoarticular disease, diabetes mellitus, obesity, depressive disorder, and normative population. It further examined the factorial invariance of the CFQ across these 5 groups. METHOD: Data from 299 participants (N General Population  = 67, N Osteoarticular Disease  = 73, N Diabetes Mellitus  = 47, N Depressive Disorder  = 45, and N Obesity  = 60) were subjected to confirmatory factorial analysis (CFA) to replicate the structural model of CFQ dimensionality...
February 14, 2017: Clinical Psychology & Psychotherapy
https://www.readbyqxmd.com/read/28191928/self-assembling-multidomain-peptide-nanofibers-for-delivery-of-bioactive-molecules-and-tissue-regeneration
#7
Amanda N Moore, Jeffrey D Hartgerink
Multidomain peptides (MDPs) are a class of self-assembling peptides that are organized in a β-sheet motif, resulting in a nanofibrous architecture. This structure is stabilized by hydrophobic packing in the fiber core and a hydrogen-bonding network down the fiber long axis. Under easily controllable conditions, regulated by electrostatic interactions between the peptides and the pH and salt composition of the solvent, the nanofiber length can be dramatically extended, resulting in fiber entanglement and hydrogel formation...
February 13, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28186814/optimum-mixed-state-discrimination-for-noisy-entanglement-enhanced-sensing
#8
Quntao Zhuang, Zheshen Zhang, Jeffrey H Shapiro
Quantum metrology utilizes nonclassical resources, such as entanglement or squeezed light, to realize sensors whose performance exceeds that afforded by classical-state systems. Environmental loss and noise, however, easily destroy nonclassical resources and, thus, nullify the performance advantages of most quantum-enhanced sensors. Quantum illumination (QI) is different. It is a robust entanglement-enhanced sensing scheme whose 6 dB performance advantage over a coherent-state sensor of the same average transmitted photon number survives the initial entanglement's eradication by loss and noise...
January 27, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28186810/entangled-pure-state-transformations-via-local-operations-assisted-by-finitely-many-rounds-of-classical-communication
#9
C Spee, J I de Vicente, D Sauerwein, B Kraus
We consider generic pure n-qubit states and a general class of pure states of arbitrary dimensions and arbitrarily many subsystems. We characterize those states which can be reached from some other state via local operations assisted by finitely many rounds of classical communication (LOCC_{N}). For n qubits with n>3, we show that this set of states is of measure zero, which implies that the maximally entangled set is generically of full measure if restricted to the practical scenario of LOCC_{N}. Moreover, we identify a class of states for which any LOCC_{N} protocol can be realized via a concatenation of deterministic steps...
January 27, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28186797/topologically-entangled-rashba-split-shockley-states-on-the-surface-of-grey-arsenic
#10
Peng Zhang, J-Z Ma, Y Ishida, L-X Zhao, Q-N Xu, B-Q Lv, K Yaji, G-F Chen, H-M Weng, X Dai, Z Fang, X-Q Chen, L Fu, T Qian, H Ding, S Shin
We discover a pair of spin-polarized surface bands on the (111) face of grey arsenic by using angle-resolved photoemission spectroscopy (ARPES). In the occupied side, the pair resembles typical nearly-free-electron Shockley states observed on noble-metal surfaces. However, pump-probe ARPES reveals that the spin-polarized pair traverses the bulk band gap and that the crossing of the pair at Γ[over ¯] is topologically unavoidable. First-principles calculations well reproduce the bands and their nontrivial topology; the calculations also support that the surface states are of Shockley type because they arise from a band inversion caused by crystal field...
January 27, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28186781/accelerating-plasma-mirrors-to-investigate-the-black-hole-information-loss-paradox
#11
Pisin Chen, Gerard Mourou
The question of whether Hawking evaporation violates unitarity, and therefore results in the loss of information, has remained unresolved since Hawking's seminal discovery. To date, the investigations have remained mostly theoretical since it is almost impossible to settle this paradox through direct astrophysical black hole observations. Here, we point out that relativistic plasma mirrors can be accelerated drastically and stopped abruptly by impinging intense x-ray pulses on solid plasma targets with a density gradient...
January 27, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28186723/bioresponsive-dna-hydrogels-beyond-the-conventional-stimuli-responsiveness
#12
Dong Wang, Yue Hu, Peifeng Liu, Dan Luo
Bioresponsive hydrogels can respond to various biological stimuli by a macroscopic change of physical state or by converting biochemical inputs into biological or mechanical outputs. These materials are playing an increasingly important role in a wide variety of applications, especially in the biological and biomedical fields. However, the design and engineering of intriguing bioresponsive materials with adequate biocompatibility and biodegradability have proven to be a great challenge. DNA, on the other hand, possesses many unique and fascinating properties, including its indispensable genetic function, broad biocompatibility, precise molecular recognition capability, tunable multifunctionality, and convenient programmability...
February 10, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28186211/controlling-the-network-type-in-self-assembled-dipeptide-hydrogels
#13
Catherine Colquhoun, Emily R Draper, Ralf Schweins, Marco Marcello, Devkee Vadukul, Louise C Serpell, Dave J Adams
We show that the same low molecular weight gelator can form gels using three different methods. Gels were formed from a high pH solution either by adding a salt or by adding an acid; gels were also formed by adding water to a solution of the gelator in an organic solvent. The mechanical properties for the gels formed by the different methods are different from one another. We link this to the network type that is formed, as well as the fibrous structures that are formed. The salt-triggered gels show a significant number of fibres that tend to align...
February 10, 2017: Soft Matter
https://www.readbyqxmd.com/read/28183976/deterministic-entanglement-generation-from-driving-through-quantum-phase-transitions
#14
Xin-Yu Luo, Yi-Quan Zou, Ling-Na Wu, Qi Liu, Ming-Fei Han, Meng Khoon Tey, Li You
Many-body entanglement is often created through the system evolution, aided by nonlinear interactions between the constituting particles. These very dynamics, however, can also lead to fluctuations and degradation of the entanglement if the interactions cannot be controlled. Here, we demonstrate near-deterministic generation of an entangled twin-Fock condensate of ~11,000 atoms by driving a arubidium-87 Bose-Einstein condensate undergoing spin mixing through two consecutive quantum phase transitions (QPTs)...
February 10, 2017: Science
https://www.readbyqxmd.com/read/28183953/transitional-approach-to-entanglement
#15
EDITORIAL
Jelena Stajic
No abstract text is available yet for this article.
February 10, 2017: Science
https://www.readbyqxmd.com/read/28182661/representing-high-throughput-expression-profiles-via-perturbation-barcodes-reveals-compound-targets
#16
Tracey M Filzen, Peter S Kutchukian, Jeffrey D Hermes, Jing Li, Matthew Tudor
High throughput mRNA expression profiling can be used to characterize the response of cell culture models to perturbations such as pharmacologic modulators and genetic perturbations. As profiling campaigns expand in scope, it is important to homogenize, summarize, and analyze the resulting data in a manner that captures significant biological signals in spite of various noise sources such as batch effects and stochastic variation. We used the L1000 platform for large-scale profiling of 978 representative genes across thousands of compound treatments...
February 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28181513/corrigendum-entanglement-revive-and-information-flow-within-the-decoherent-environment
#17
Jia-Dong Shi, Dong Wang, Liu Ye
No abstract text is available yet for this article.
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28168940/technoscience-imagined-publics-and-public-imaginations
#18
Kjetil Rommetveit, Brian Wynne
This essay begins from the intensified entanglements of technoscientific innovation with miscellaneous societal and public fields of interest and action over recent years. This has been accompanied by an apparent decline in the work of purification of discourses of natural and human agency, which Latour observed in 1993. Replacing such previous discursive purifications, we increasingly find technoscientific visions of the imagined-possible as key providers of public meanings and policies. This poses the question of what forms of legitimation are constituted by these sciences, including the ways in which they enter into articulations of public matters...
February 2017: Public Understanding of Science
https://www.readbyqxmd.com/read/28165498/two-dimensional-talbot-self-imaging-via-electromagnetically-induced-lattice
#19
Feng Wen, Wei Wang, Irfan Ahmed, Hongxing Wang, Yiqi Zhang, Yanpeng Zhang, Abdul Rasheed Mahesar, Min Xiao
We propose a lensless optical method for imaging two-dimensional ultra-cold atoms (or molecules) in which the image can be non-locally observed by coincidence recording of entangled photon pairs. In particular, we focus on the transverse and longitudinal resolutions of images under various scanning methods. In addition, the role of the induced nonmaterial lattice on the image contrast is investigated. Our work shows a non-destructive and lensless way to image ultra-cold atoms or molecules that can be further used for two-dimensional atomic super-resolution optical testing and sub-wavelength lithography...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28164318/-doing-good-by-proxy-human-animal-kinship-and-the-donation-of-canine-blood
#20
Vanessa Ashall, Pru Hobson-West
This article demonstrates the relevance of animals to medical sociology by arguing that pet owners' accounts of veterinary decision-making can highlight key sociological themes which are important to both human and animal health. Based on semi-structured interviews, the article argues that interspecies 'kinship' allows for the extension of sociological claims regarding altruism, self-interest and mutuality from human blood donation to companion animal blood 'donation'. Furthermore, this study extends sociological understanding of the human-animal bond by showing how the dog's status as kin meant they were expected to donate blood, and that the act of donation itself represents an important opportunity for family 'display'...
February 6, 2017: Sociology of Health & Illness
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