Results 31 to 40 of about 1,553 (138)

Few‐Photon Fluorescence From Ultracold Bosons in an Optical Cavity

Contributions to Plasma Physics, EarlyView.
ABSTRACT Within a cavity quantum electrodynamics framework, we analyse the fluorescent spectrum of ultracold bosons in resonant and second‐harmonic generation (SHG) regimes. Two settings are considered: (i) (few) bosons in an optical lattice and (ii) a trapped two‐component dilute Bose–Einstein condensate (2BEC) within the Bogoliubov scheme.
Megha Gopalakrishna, Emil Viñas Boström, Claudio Verdozzi   +2 more
wiley   +1 more source

Fast preparation of Dicke state by shortcuts to adiabatic passages

Results in Physics
Dicke state is one of the most useful multipartite quantum states. In this paper, by utilizing the method of designing the evolution operators to construct shortcuts to adiabatic passages (STAP), we have implemented the fast preparation of Dicke states ...
C.Q. Wang, Y.Q. Ji, W.Y. Zhang, J. Wang, Z.M. Zhang, Y.L. Liu, L. Dong, X.M. Xiu   +7 more
doaj   +1 more source

Predicting Statistical Signatures of Collective Emission in Disordered Color Center Ensembles

Laser &Photonics Reviews, EarlyView.
We present an efficient simulation framework for modeling collective emission in disordered ensembles of quantum emitters. The low computational complexity enables large‐scale Monte Carlo simulations. Applied to SiV−${\rm SiV}^{-}$ clusters, it predicts thresholded superradiant bursts set by emitter number and quantum efficiency, as well as interaction‐
Qingyi Zhou, Wenxin Wu, Maryam Zahedian, Zongfu Yu, Jennifer T. Choy   +4 more
wiley   +1 more source

Essential work of fracture and absorbed energy by Charpy impact test of TRIP780 1.5 mm thick sheet steel Kerbschlagarbeit und absorbierte Energie bei der Charpy‐Schlagprüfung an 1,5 mm dickem Restaustenitstahlblech (HCT 780)

Materialwissenschaft und Werkstofftechnik, EarlyView.
The study demonstrated that absorbed energy (Charpy impact test) and fracture toughness (EWF test) are essential for evaluating the mechanical performance of thin sheet metallic materials. Transformation‐induced plasticity (TRIP) steels have been extensively studied concerning their mechanical performance under monotonic loading and conventional ...
W. R. Soares, C. A. R. P. Baptista, J. A. Avila, H. Goldenstein   +3 more
wiley   +1 more source

Harnessing subspace controllability: Dynamical generation of Dicke states in Heisenberg-coupled qubit arrays with a single local control

Physical Review Research
We explore the feasibility of realizing Dicke states in qubit arrays with always-on isotropic Heisenberg coupling between adjacent qubits, assuming a single Zeeman-type control acting in the z direction on an actuator qubit. The Lie-algebraic criteria of
Vladimir M. Stojanović, Tommaso Calarco, Andrea Muratori   +2 more
doaj   +1 more source

Reduced fertilization regimes could boost biocontrol service without reducing crop yield

Insect Science, EarlyView.
Fertilization level influences pest control effectiveness in tomato crops. High fertilization increases plant growth and aphid density but reduces the performance of the parasitoid Aphidius ervi. In contrast, the predator Adalia bipunctata maintains consistent aphid suppression regardless of fertilization regime.
Ruohan Ma, Maceo Valente, Roger Boll, Peng Han, Nicolas Desneux, Anne‐Violette Lavoir   +5 more
wiley   +1 more source

Role of polaron dressing in superradiant emission dynamics

Physical Review Research
Cooperative effects of multiple quantum emitters are characterized by transitions via delocalized collective states with altered emission properties due to the existence of interemitter coherences.
J. Wiercinski, M. Cygorek, E. M. Gauger
doaj   +1 more source

Transition-Based Multipartite Entangled States and Their Applications to Transition-Constrained Quantum Search

IEEE Access
We introduce Transition states (T states), denoted by $\left \vert { T_{k}^{n}}\right \rangle $ , as multipartite entangled states characterized by a fixed number of state transitions between adjacent qubits.
Jehn-Ruey Jiang
doaj   +1 more source

Volumetric Comparison of Overall Brain and Neuropil Size Between Social and Non‐social Spiders: Exploring the Social Brain Hypothesis

Integrative Zoology, EarlyView.
Brain size may be influenced by the cognitive demands of sociality (social brain hypothesis). We used microCT to compare CNS and brain volumes in social versus solitary huntsman and crab spiders. Social huntsman spiders had larger arcuate and mushroom bodies, while social crab spiders had larger visual neuropils.
Vanessa Penna‐Gonçalves, Donald James Mclean, Nikolas J. Willmott, Michael B. J. Kelly, Jay R. Black, Elizabeth C. Lowe, Marie E. Herberstein   +6 more
wiley   +1 more source

Superradiant to subradiant phase transition in the open system Dicke model: dark state cascades

New Journal of Physics, 2018
Collectivity in ensembles of atoms gives rise to effects like super- and subradiance. While superradiance is well studied and experimentally accessible, subradiance remains elusive since it is difficult to track experimentally as well as theoretically ...
Michael Gegg, Alexander Carmele, Andreas Knorr, Marten Richter   +3 more
doaj   +1 more source