Results 91 to 100 of about 454,681 (325)

Quantum Quenches and Entanglement [PDF]

, 2017
A simple but quite non-trivial class of non-equilibrium processes of a quantum many-body system is quantum quenches. We start with a ground state \(\mid \!\Phi _{0}\rangle\) of a certain Hamiltonian H0. At time t = 0, we suddenly change the Hamiltonian from H0 to a new one H.
Mukund Rangamani, Tadashi Takayanagi, Tadashi Takayanagi   +2 more
openaire   +3 more sources

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

Advanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian, Yao Zhang, Xiaowei Sheng, Xiuxian Yang, Gang Zhang, Junfeng Gao, Xiaotian Wang   +6 more
wiley   +1 more source

Entanglement fidelity and measure of entanglement [PDF]

arXiv, 2019
The notion of entanglement fidelity is to measure entanglement preservation through quantum channels. Nevertheless, the amount of entanglement present in a state of a quantum system at any time is measured by quantities known as measures of entanglement.
arxiv  

Entanglement cost of quantum channels [PDF]

2012 IEEE International Symposium on Information Theory Proceedings, 2012
The entanglement cost of a quantum channel is the minimal rate at which entanglement (between sender and receiver) is needed in order to simulate many copies of a quantum channel in the presence of free classical communication. In this paper we show how to express this quantity as a regularised optimisation of the entanglement formation over states ...
Berta, M, Brandao, FGSL, Christandl, M, Wehner, S   +3 more
openaire   +8 more sources

Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures

Advanced Functional Materials, EarlyView.
3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina, Luke Alexander Turnbull, Weijie Xu, Markus König, Paul Simon, Wilder Carrillo‐Cabrera, Amalio Fernández‐Pacheco, Uri Vool, Dieter Suess, Claas Abert, Vladimir M. Fomin, Claire Donnelly   +11 more
wiley   +1 more source

Simulating the quantum Fourier transform, Grover's algorithm, and the quantum counting algorithm with limited entanglement using tensor networks

Physical Review Research
Quantum algorithms reformulate computational problems as quantum evolutions in a large Hilbert space. Most quantum algorithms assume that the time evolution is perfectly unitary and that the full Hilbert space is available.
Marcel Niedermeier, Jose L. Lado, Christian Flindt   +2 more
doaj   +1 more source

Quantum entanglement of photons on free electrons

Results in Physics, 2023
The quantum entanglement of photons is one of the interesting and important manifestations of the quantum world, which is already being used in quantum technologies.
D.N. Makarov
doaj  

High-dimensional time-frequency entanglement in a singly-filtered biphoton frequency comb

Communications Physics, 2023
High-dimensional quantum entanglement is a cornerstone for advanced technology enabling large-scale noise-tolerant quantum systems, fault-tolerant quantum computing, and distributed quantum networks.
Xiang Cheng, Kai-Chi Chang, Murat Can Sarihan, Andrew Mueller, Maria Spiropulu, Matthew D. Shaw, Boris Korzh, Andrei Faraon, Franco N. C. Wong, Jeffrey H. Shapiro, Chee Wei Wong   +10 more
doaj   +1 more source

Quantum Entanglement in Carbon Nanotubes [PDF]

Physical Review Letters, 2002
4 pages, 2 figures ...
Bena, Cristina, Vishveshwara, Smitha, Balents, Leon, Fisher, Matthew   +3 more
openaire   +5 more sources

Computational Modeling of Reticular Materials: The Past, the Present, and the Future

Advanced Materials, EarlyView.
Reticular materials are advanced materials with applications in emerging technologies. A thorough understanding of material properties at operating conditions is critical to accelerate the deployment at an industrial scale. Herein, the status of computational modeling of reticular materials is reviewed, supplemented with topical examples highlighting ...
Wim Temmerman, Ruben Goeminne, Kuber Singh Rawat, Veronique Van Speybroeck   +3 more
wiley   +1 more source