We observe the emergence of a disorder-induced insulating state in strongly interacting atomic Fermi gas trapped an optical lattice. This closed quantum system free thermal reservoir realizes disordered Fermi-Hubbard model, which is minimal model for correlated electronic solids. In measurements localization obtained via mass transport, we detect interaction-driven delocalization and that persists as temperature raised. These behaviors are consistent with many-body localization, novel...

Nanocrystalline (NC) body-centered cubic (bcc) metals behave very differently from how NC with other crystal structures behave. Their strain rate sensitivity decreases decreasing grain size, which is an observation that has not been well understood. Here, we report a significant effect of size on the deformation mechanism bcc Mo. With density mixed and edge dislocations increases, while screw decreases. When grains become small, overall dislocation size. These observations provide logical...

We demonstrate a new approach for fast preparation, manipulation, and collective readout of an atomic Rydberg-state qubit. By making use Rydberg blockade inside small ensemble, we prepare single qubit within $3\text{ }\text{ }\ensuremath{\mu}\mathrm{s}$ with success probability ${F}_{p}=0.93\ifmmode\pm\else\textpm\fi{}0.02$, rotate it, read out its state in $6\text{ single-shot fidelity ${F}_{d}=0.92\ifmmode\pm\else\textpm\fi{}0.04$. The ensemble-assisted detection is ${10}^{3}$ times faster...

We report on the impact of variable-scale disorder 3D Anderson localization a noninteracting ultracold atomic gas. A spin-polarized gas fermionic atoms is localized by allowing it to expand in an optical speckle potential. Using sudden quench density distribution, we verify that profile representative underlying single-particle states. The geometric mean disordering potential correlation lengths varied factor 4 via adjusting aperture focusing lens. observe root-mean-square size increases...

As modern agricultural technology advances, the automated detection, classification, and harvesting of strawberries have become an inevitable trend. Among these tasks, classification stands as a pivotal juncture. Nevertheless, existing object detection methods struggle with substantial computational demands, high resource utilization, reduced efficiency. These challenges make deployment on edge devices difficult lead to suboptimal user experiences. In this study, we developed lightweight...

Electrical current in conventional metals is carried by electrons that retain their individual character. Bad metals, such as the normal state of some high-temperature superconductors, violate this scenario, and complete picture for behavior remains unresolved. Here, we report phenomena consistent with bad-metal behaviour an optical-lattice Hubbard model measuring transport lifetime a mass excited stimulated Raman transitions. We demonstrate incompatibility weak-scattering theory key...

We demonstrate a velocity selection scheme that mitigates suppression of electromagnetically induced transparency (EIT) by Doppler shifts for coupling wavelengths larger than the probe wavelength. An optical pumping beam counterpropagating with EIT transfers atoms between hyperfine states in velocity-selective fashion. Measurement transmitted synchronous chopping enables Doppler-free signal to be detected. Transition frequencies $5{P}_{1/2}$ and $n{S}_{1/2}$ $n=26$, 27, 28 $^{39}\mathrm{K}$...

We report the realization of correlated, density-dependent tunneling for fermionic 40K atoms trapped in an optical lattice. By appropriately tuning frequency difference between a pair Raman beams applied to spin-polarized gas, simultaneous spin transitions and events are induced that depend on relative occupations neighboring lattice sites. Correlated spin-flip is spectroscopically resolved using gases prepared opposite states, inferred Hubbard interaction energy compared with tight-binding...

A fluorescent molecule, N-methyl-pyrenemethylammonium (MPA+), can be encapsulated inside cucurbit[8]uril's (CB[8]) cavity to form a binary host–guest complex. And the complex further binds methyl viologen (MV2+), yielding ternary With only two chemical stimuli, cucurbit[7]uril (CB[7]) and amantadine hydrochloride (AD), three binding states of MPA+, unbound complex, transform reversibly exert different fluorescence outputs.

Exchange inhibitory peptide (XIP; RRLLFYKYVYKRYRAGKQRG) is the shortest that inhibits plasma membrane Ca pump at high (A. Enyedi, T. Vorherr, P. James, D. J. McCormick, A. G. Filoteo, E. Carafoli, and Penniston, Biol. Chem. 264: 12313-12321, 1989). Sulfosuccinimidyl acetate (SNA)-modified XIP does not inhibit pump; SNA neutralizes positive charge on Lys positions 7, 11, 17. Peptide 2CK-XIP (RRLLFYRYVYRCYCAGRQKG) pump, but iodoacetamido-modified inhibit. Three analogues, in which 17 were Ala,...

The authors study the relaxation dynamics of doubly occupied lattice sites in three-dimensional disordered Fermi-Hubbard model and find a dynamical regime strong interactions that is characterized by disorder-enhanced relaxation.

We report the discovery of phenomena consistent with bad-metal relaxation dynamics in metallic regime an optical-lattice Hubbard model. The transport lifetime induced by inter-particle scattering for a mass current atoms excited stimulated Raman transitions is measured, and corresponding analog resistivity inferred. By exploring range temperature, we demonstrate incompatibility weak-scattering theory key characteristic bad metals: anomalous scaling $T$-linear behavior. also observe onset two...

Attempts to create quantum degenerate gases without evaporative cooling have been pursued since the early days of laser cooling, with consensus that polarization gradient (PGC, also known as "optical molasses") alone cannot reach condensation. In present work, we report simple PGC can generate a small Bose-Einstein condensate (BEC) inside corrugated micrometer-sized optical dipole trap. The experimental parameters enabling BEC creation were found by machine learning, which increased atom...

For an ion trap with resonance ejection, peak intensity and position of the acquired mass spectra are affected by phase difference between radio frequency (RF) auxiliary alternating current (AC) potentials. To ensure measurement stability, RF AC phase-locking is commonly used in commercial spectrometers. In this study, a compact electronic control system was developed to accurately regulate phases employed photoionization rectilinear (RIT) spectrometer. We found that method defective...

New star polypseudorotaxanes that include 4,4′-dipyridyl-terminated 4-arm-poly(ethylene glycol) (PC1) and cucurbit[7]uril (CB[7]) were easily synthesised. The 1H NMR, UV–vis resonance light scattering (RLS) data show the viologen units of could fall off from hydrophobic cavity CB[7] with addition 1-adamantylamine (ADA). cyclic voltammograms results indicate have redox property ADA compared non-redox pure polypseudorotaxanes. biological toxicity experiment shows bactericidal activity in...

Selecting proper clients to participate in the iterative federated learning (FL) rounds is critical effectively harness a broad range of distributed datasets. Existing client selection methods simply consider variability among FL with uni-modal data, however, have yet multi-modalities. We reveal that traditional scheme MFL may suffer from severe modality-level bias, which impedes collaborative exploitation multi-modal leading insufficient local data exploration and global aggregation. To...

Attempts to create quantum degenerate gases without evaporative cooling have been pursued since the early days of laser cooling, with consensus that polarization gradient (PGC, also known as ``optical molasses'') alone cannot reach condensation. In present work, we report simple PGC can generate a small Bose-Einstein condensate (BEC) inside corrugated micrometer-sized optical dipole trap. The experimental parameters enabling BEC creation were found by machine learning, which increased atom...