Filters








21,741 Hits in 1.9 sec

Entangled Residual Mappings [article]

Mathias Lechner, Ramin Hasani, Zahra Babaiee, Radu Grosu, Daniela Rus, Thomas A. Henzinger, Sepp Hochreiter
2022 arXiv   pre-print
An entangled residual mapping replaces the identity skip connections with specialized entangled mappings such as orthogonal, sparse, and structural correlation matrices that share key attributes (eigenvalues  ...  In this paper, we take a step further and introduce entangled residual mappings to generalize the structure of the residual connections and evaluate their role in iterative learning representations.  ...  We first introduce a general notion for residual mapping, namely the entangled residual mapping.  ... 
arXiv:2206.01261v1 fatcat:uklupn6bgrf7loy6cxgkiprftu

Entanglement versus relaxation and decoherence in a quantum algorithm for quantum chaos

S. Bettelli, D. L. Shepelyansky
2003 Physical Review A. Atomic, Molecular, and Optical Physics  
This decay goes down to a residual level which drops exponentially with the number of qubits n_q. Decoherence destroys the residual entanglement with a rate exponential in n_q.  ...  We study analytically and numerically the behavior of quantum entanglement in a quantum computer operating an efficient algorithm for quantum chaos.  ...  We show that the residual level of entanglement in an ideal algorithm scales as the inverse square root of the conductance of the system.  ... 
doi:10.1103/physreva.67.054303 fatcat:quq3rns4x5ecrg2bwmizku6hxe

Synonymous mutations can alter protein dimerization through localized interface misfolding involving self-entanglements [article]

Lan Pham Dang, Daniel Allen Nissley, Ian Sitarik, Quyen Vu Van, Yang Jiang, Mai Suan Li, Edward P. O'Brien
2021 bioRxiv   pre-print
Entanglements cause altered dimerization energies for oligoribonuclease as there is a significant association (odds ratio: 50) between non-native self-entanglements and weak-binding dimer conformations  ...  These conclusions are independent of model resolution, as entangled structures persist in long-time-scale all-atom simulations.  ...  An entanglement is considered to occur at the interface if any entangled residues are also identified to be interface residues, where interface residues are defined as those residues in Monomer A within  ... 
doi:10.1101/2021.10.26.465867 fatcat:u6fh3qe6dnbzda54o2a6ojh32e

Image Disentanglement and Uncooperative Re-Entanglement for High-Fidelity Image-to-Image Translation [article]

Adam W. Harley, Shih-En Wei, Jason Saragih, Katerina Fragkiadaki
2019 arXiv   pre-print
We call the second mapping an entanglement, denoted E, since it performs a merging operation: Figure 3 relates the notation to the data and architecture.  ...  Let R be the residual information that is in V but not in C. Accessing this extra information allows us to form bijective (one-to-one) mappings, V → C ×R and C ×R → V .  ...  Additional results Residual Map Ours Residual Map MUNIT Figure 9 : Aerial image composition of our method (left) vs MUNIT (right).  ... 
arXiv:1901.03628v2 fatcat:723hgcijercztokcozim46rowe

Universal protein misfolding intermediates can bypass the proteostasis network and remain soluble and non-functional [article]

Daniel Allen Nissley, Yang Jiang, Fabio Trovato, Ian Sitarik, Karthik Narayan, Edward P O'Brien
2021 bioRxiv   pre-print
Such entanglements are observed in many native structures, suggesting the non-native entanglements we observe are plausible.  ...  Structurally characterizing these misfolded states, we observe they have a large amount of native structure, but also contain localized misfolded regions from non-native changes in entanglement, in which  ...  and interfacial residues (mapped) residues  ... 
doi:10.1101/2021.08.18.456613 fatcat:nqoh7wxxgfgrxeblu7fk2mc77q

Stability of pairwise entanglement in a decoherent environment

Jian-Ming Cai, Zheng-Wei Zhou, Guang-Can Guo
2005 Physical Review A. Atomic, Molecular, and Optical Physics  
The lifetime of the entanglement in these states is larger than other states with the same initial entanglement.  ...  Consider the dynamics of a two-qubit entangled system in the decoherence environment, we investigate the stability of pairwise entanglement under decoherence.  ...  Now we can transformed this map into the R-picture.  ... 
doi:10.1103/physreva.72.022312 fatcat:vuxtoxns2vbi5ngamr75cuweam

Globular bundles and entangled network of proteins (CorA) by a coarse-grained Monte Carlo simulation [article]

Warin Jetsadawisut, Panisak Boonamnaj Chulalongkorn University, Bangkok, Thailand, Kasetsart University Sriracha Campus, Chonburi, Thailand, University of Southern Mississippi, Hattiesburg, MS USA)
2019 arXiv   pre-print
Visual inspections show distinct structures, i.e. isolated globular bundles to entangled network on multiple length scales in dilute to crowded protein concentrations.  ...  In contrast, the radius of gyration of the protein shows enormous growth with the concentration due to entanglement while that of the inner segment remains almost constant in denatured phase.  ...  Figure S1 : Contact map of residues around each of CorA ( 1 M 2 E … 351 L) residues in a simulation box with the number of protein chains Nc = 5, 10, 20, and 100 at a low temperature (T = 0.020).  ... 
arXiv:1904.04409v1 fatcat:h2mseznporacfd34x7hl5vr4vi

Distant entanglement with nearest neighbor interactions [article]

Gavin K. Brennen
2002 arXiv   pre-print
One solution may be to couple a system collectively with a probe that leaves residual entanglement in the system.  ...  Preparing many body entangled states efficiently using available interactions is a challenging task.  ...  This would require finding the unitary that maps an initial unentangled state |χ 12 ⊗ |φ 3 to the entangled one. B.  ... 
arXiv:quant-ph/0206199v1 fatcat:ar54xnfpwbgabpgqewkj2xqoja

Selfcomplementary Quantum Channels

Marek Smaczyński, Wojciech Roga, Karol Życzkowski
2016 Open systems & information dynamics  
Selfcomplementary channels preserve some residual coherences and residual entanglement.  ...  These maps can describe approximate quantum copy machines, as perfect copying of an unknown quantum state is not possible due to the celebrated no-cloning theorem.  ...  It is evident that almost all single-qubit selfcomplementary channels preserve some residual entanglement. The concurrence is a measure of entanglement characterizing two-qubit states.  ... 
doi:10.1142/s1230161216500141 fatcat:jg7thbifhvgjhd4ksd4uzlxykm

Residual effect on the robustness of multiqubit entanglement

Bao-Kui Zhao, Fu-Guo Deng
2010 Physical Review A. Atomic, Molecular, and Optical Physics  
There is a residual effect on the robustness of a three-qubit system in an arbitrary superposition of Greenberger-Horne-Zeilinger state and W state.  ...  Its entanglement determines the trend of its robustness. However, there is a splitting on its robustness under the same entanglement.  ...  The right inset shows the residual entanglement of the state |Z(a, ϕ) versus the coefficient a with different phase factors ϕ.  ... 
doi:10.1103/physreva.82.014301 fatcat:n355oouj7rfixmdwwc3f4hxw54

Multipartite entanglement in a one-dimensional time-dependent Ising model

Arul Lakshminarayan, V. Subrahmanyam
2005 Physical Review A. Atomic, Molecular, and Optical Physics  
entanglement measures can be enhanced in nonintegrable systems.  ...  down spins, produces those with large entanglement content uniformly.  ...  For three qubits the residual tangle and provides a global entanglement measure [22] .  ... 
doi:10.1103/physreva.71.062334 fatcat:a3hu6sh4nzfu3hz23hljzuefha

Nonuniversal Entanglement Level Statistics in Projection-driven Quantum Circuits [article]

Lei Zhang, Justin A. Reyes, Stefanos Kourtis, Claudio Chamon, Eduardo R. Mucciolo, Andrei E. Ruckenstein
2020 arXiv   pre-print
volume-to-area law transition observed in quantum circuits with projective measurements; The second separates the pure Poisson level statistics phase at large projective measurement rates from a regime of residual  ...  We study the level-spacing statistics in the entanglement spectrum of output states of random universal quantum circuits where qubits are subject to a finite probability of projection to the computational  ...  The second transition separates the pure Poisson level statistics phase (p > pc) from a regime of residual level repulsion in the entanglement spectrum (p < pc), characterized by non-universal level spacing  ... 
arXiv:2001.11428v1 fatcat:ne3pgzhicjbaxilfaaidhmoosa

Binding entanglement channels

Paweł Horodecki, Michał Horodecki, Ryszard Horodecki
2000 Journal of Modern Optics  
We also show that any bound entangled state can be used to construction of the map corresponding the binding entanglement channel.  ...  We define the binding entanglement channel as the quantum channel through which quantum information cannot be reliably transmitted, but which can be used to share bound entanglement.  ...  Such interaction may completely destroy the initial pure entanglement, or sometimes there may remain some residual entanglement, free or bound.  ... 
doi:10.1080/09500340008244047 fatcat:pnw4q5kxnjh5bjduru5cxty77q

Binding entanglement channels

Pawel Horodecki, Michal Horodecki, Ryszard Horodecki
2000 Journal of Modern Optics  
We also show that any bound entangled state can be used to construction of the map corresponding the binding entanglement channel.  ...  We define the binding entanglement channel as the quantum channel through which quantum information cannot be reliably transmitted, but which can be used to share bound entanglement.  ...  Such interaction may completely destroy the initial pure entanglement, or sometimes there may remain some residual entanglement, free or bound.  ... 
doi:10.1080/095003400148259 fatcat:yvfxtrworjbgjkziwc52lepi3m

Multipartite entanglement in three-mode Gaussian states of continuous-variable systems: Quantification, sharing structure, and decoherence

Gerardo Adesso, Alessio Serafini, Fabrizio Illuminati
2006 Physical Review A. Atomic, Molecular, and Optical Physics  
This will lead us to show that pure, symmetric states allow for a promiscuous entanglement sharing, having both maximum tripartite residual entanglement and maximum couplewise entanglement between any  ...  We finally consider the action of decoherence on tripartite entangled Gaussian states, studying the decay of the residual contangle.  ...  It yields a basic, significant example of 'Gaussian channel', i.e. of a map mapping Gaussian states into Gaussian states under generally non unitary evolutions.  ... 
doi:10.1103/physreva.73.032345 fatcat:jfzkmayzejcf3jipaiu6iruuke
« Previous Showing results 1 — 15 out of 21,741 results