Results 41 to 50 of about 734,222 (292)

Many-body Quantum Chaos and Entanglement in a Quantum Ratchet [PDF]

, 2017
We uncover signatures of quantum chaos in the many-body dynamics of a Bose-Einstein condensate-based quantum ratchet in a toroidal trap. We propose measures including entanglement, condensate depletion, and spreading over a fixed basis in many-body ...
Carr, Lincoln D., Creffield, Charles E., Heimsoth, Martin, Shchedrin, Gavriil, Sols, Fernando, Valdez, Marc Andrew   +5 more
core   +3 more sources

Recent Advancements in Bulk Processing of Rare‐Earth‐Free Hard Magnetic Materials and Related Multiscale Simulations

Advanced Engineering Materials, EarlyView.
This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley   +1 more source

Nonlocality activation in a photonic quantum network

Nature Communications
Bell nonlocality refers to correlations between two distant, entangled particles that challenge classical notions of local causality. Beyond its foundational significance, nonlocality is crucial for device-independent technologies like quantum key ...
Luis Villegas-Aguilar, Emanuele Polino, Farzad Ghafari, Marco Túlio Quintino, Kiarn T. Laverick, Ian R. Berkman, Sven Rogge, Lynden K. Shalm, Nora Tischler, Eric G. Cavalcanti, Sergei Slussarenko, Geoff J. Pryde   +11 more
doaj   +1 more source

Common microscopic origin of the phase transitions in Ta2NiS5 and the excitonic insulator candidate Ta2NiSe5

npj Computational Materials, 2021
The structural phase transition in Ta2NiSe5 has been envisioned as driven by the formation of an excitonic insulating phase. However, the role of structural and electronic instabilities on crystal symmetry breaking has yet to be disentangled.
Lukas Windgätter, Malte Rösner, Giacomo Mazza, Hannes Hübener, Antoine Georges, Andrew J. Millis, Simone Latini, Angel Rubio   +7 more
doaj   +1 more source

Simplicial quantum dynamics

, 2011
Present-day quantum field theory can be regularized by a decomposition into quantum simplices. This replaces the infinite-dimensional Hilbert space by a high-dimensional spinor space and singular canonical Lie groups by regular spin groups.
Baugh J, Blatt J M, Bohm D, Bopp F, C F von Weizsaecker Komplementaritat und Logik I-II, Connes A, David Finkelstein, Dennis Marks, Dirac P A M, Feynman R P Personal communication ca, Finkelstein D, Finkelstein D, Galiautdinov A A, Gerstenhhaber M, Hestenes D, Inönü E, Kleinert H, Madore J, Mermin N D, Palev T D, Penrose R, Saller H, Saller H, Salom I, Segal I E, Selesnick S A, Shiri-Garakani, Snyder H P, Stoilova N I, Stückelberg E C G, Tavel M, Vilela Mendes R, Wess J, Yang C N   +33 more
core   +1 more source

Fabrication of Multifunctional FeSi Gyroid Lattice Composites via Additive Manufacturing and Polymer Infiltration

Advanced Engineering Materials, EarlyView.
A two‐step approach combining laser powder bed fusion of FeSi electrical steel with Bakelite infiltration enables the fabrication of multifunctional gyroid lattice composites. The resulting structures exhibit high strength, magnetic anisotropy, and complete polymer infiltration, demonstrating a simple and scalable route toward lightweight, mechanically
Angelo F. Andreoli, Mayumi A. Nakahashi, Vitor E. Pinotti, Felipe O. C. Bernardo, Lidiane C. Costa, Francisco G. Coury, Ronei C. de Oliveira, Adilson J. A. de Oliveira, Carlos E. H. Ventura, Piter Gargarella   +9 more
wiley   +1 more source

The Wigner–Araki–Yanase theorem and the quantum resource theory of asymmetry

New Journal of Physics, 2013
The Wigner–Araki–Yanase (WAY) theorem establishes an important constraint that conservation laws impose on quantum mechanical measurements. We formulate the WAY theorem in the broader context of resource theories, where one is constrained to a subset of ...
Mehdi Ahmadi, David Jennings, Terry Rudolph   +2 more
doaj   +1 more source

Quantum-Classical Liouville Dynamics in the Mapping Basis

, 2009
The quantum-classical Liouville equation describes the dynamics of a quantum subsystem coupled to a classical environment. It has been simulated using various methods, notably, surface-hopping schemes.
Kapral, Raymond, Kim, Hyojoon, Nassimi, Ali   +2 more
core   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Quasi-autonomous quantum thermal machines and quantum to classical energy flow

New Journal of Physics, 2016
There are both practical and foundational motivations to consider the thermodynamics of quantum systems at small scales. Here we address the issue of autonomous quantum thermal machines that are tailored to achieve some specific thermodynamic primitive ...
Max F Frenzel, David Jennings, Terry Rudolph   +2 more
doaj   +1 more source