Results 51 to 60 of about 718,181 (329)

Convolutionless Non-Markovian master equations and quantum trajectories: Brownian motion revisited

, 2003
Stochastic Schr{\"o}dinger equations for quantum trajectories offer an alternative and sometimes superior approach to the study of open quantum system dynamics.
A. Novikov, A. O. Caldeira, C. W. Gardiner, F. Schwabl, G. Lindblad, H. Carmichael, H. Carmichael, H.-P. Breuer, J. Cresser, L. Diósi, N. G. van Kampen, N. Gisin, N. Gisin, P. Ullersma, R. Feynman, S. Gnutzmann, S. Nakajima, Ting Yu, U. Weiss, V. Bargmann, Walter T. Strunz   +20 more
core   +1 more source

Digital Quantum Simulation of Open Quantum Systems Using Quantum Imaginary–Time Evolution

PRX Quantum, 2022
Quantum simulation on emerging quantum hardware is a topic of intense interest. While many studies focus on computing ground-state properties or simulating unitary dynamics of closed systems, open quantum systems are an interesting target of study owing ...
Hirsh Kamakari, Shi-Ning Sun, Mario Motta, Austin J. Minnich   +3 more
doaj   +1 more source

Witness for initial system-environment correlations in open system dynamics

, 2010
We study the evolution of a general open quantum system when the system and its environment are initially correlated. We show that the trace distance between two states of the open system can increase above its initial value, and derive tight upper ...
Breuer H. P., Breuer H. P., E.-M. Laine, H.-P. Breuer, Henderson L., J. Piilo, Li C.-F., Lindblad G., Nielsen M. A., Rodríguez-Rosario C. A.   +9 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Non-Markovianity in High-Dimensional Open Quantum Systems using Next-generation Multicore Optical Fibers [PDF]

Quantum
With the advent of quantum technology, the interest in communication tasks assisted by quantum systems has increased both in academia and industry. Nonetheless, the transmission of a quantum state in real-world scenarios is bounded by environmental noise,
Santiago Rojas-Rojas, Daniel Martínez, Kei Sawada, Luciano Pereira, Stephen P. Walborn, Esteban S. Gómez, Nadja K. Bernardes, Gustavo Lima   +7 more
doaj   +1 more source

Reduced quantum dynamics with initial system-environment correlations characterized by pure Markov states

, 2016
Any tripartite state which saturates the strong subadditivity relation for the quantum entropy is defined as the Markov state.A tripartite pure state describing an open system, its environment and their purifying system isa pure Markov state iff the ...
Türkmen, A., Verçin, A., Yılmaz, S.
core   +1 more source

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

Advanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu, Peipei Chen, Shafia Mukhtar Ibrahim, Mukhtar Lawan Adam, Attia Falak, Mokhotjwa Simon Dhlamini, Hanfu Wang, Lingxiang Jiang, Weiguo Chu   +8 more
wiley   +1 more source

Advances in Sequential Measurement and Control of Open Quantum Systems

Proceedings, 2019
Novel concepts, perspectives and challenges in measuring and controlling an open quantum system via sequential schemes are shown. We discuss how similar protocols, relying both on repeated quantum measurements and dynamical decoupling control pulses, can
Stefano Gherardini, Andrea Smirne, Matthias M. Müller, Filippo Caruso   +3 more
doaj   +1 more source

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

PsiQuaSP -- A library for efficient computation of symmetric open quantum systems

, 2017
In a recent publication we showed that permutation symmetry reduces the numerical complexity of Lindblad quantum master equations for identical multi-level systems from exponential to polynomial scaling.
Gegg, Michael, Richter, Marten
core   +2 more sources