3.17% efficient Cu₂ZnSnS₄–BiVO₄ integrated tandem cell and a large scale 5 × cm CZTS–BiVO₄ device for standalone overall solar water splitting was assembled the first time.

Abstract A highly efficient, low-cost and environmentally friendly photocathode with long-term stability is the goal of practical solar hydrogen evolution applications. Here, we found that Cu 3 BiS film-based meets abovementioned requirements. The -based presents a remarkable onset potential over 0.9 V RHE excellent photoelectrochemical current densities (~7 mA/cm 2 under 0 ) appreciable 10-hour in neutral water solutions. This high directly results good unbiased operating photocurrent ~1.6...

We demonstrate high-fidelity repetitive measurements of nuclear spin qubits in an array neutral ytterbium-171 (171Yb) atoms. show that the qubit state can be measured with a spin-flip probability 0.004(4) for single tweezer and 0.012(3) averaged over array. This is accomplished by high cyclicity one states optically excited under magnetic field B=58 G, resulting approximately 10−5 per scattered photon during fluorescence readout. The performance improves further as ∼1/B2. discrimination...

Neutral alkaline earth(like) atoms have recently been employed in atomic arrays with individual readout, control, and high-fidelity Rydberg-mediated entanglement. This emerging platform offers a wide range of new quantum science applications that leverage the unique properties such atoms: ultranarrow optical ``clock'' transitions isolated nuclear spins. Specifically, these offer an qubit ($o$) as well ground ($g$) metastable ($m$) spin qubits, all within single atom. We consider...

Many precision laser applications require active frequency stabilization. However, such stabilization loops operate by pushing noise to frequencies outside their bandwidth, leading large ``servo bumps'' that can have deleterious effects for certain applications. The prevailing approach filtering this is pass the through a high-finesse optical cavity, which places constraints on system design. Here, we propose and demonstrate different where error signal derived from beat note between light...

Picometer laser interferometry is an essential tool for ultra-precision measurements in frontier scientific research and advanced manufacturing. In this paper, we present a dual-heterodyne interferometer simultaneously measuring linear angular displacements with resolutions of picometer nanoradian, respectively. The phase measurement method based on cross-correlation analysis realized by PXI-bus data acquisition system. By implementing highly symmetric optical configuration, low frequency...

Air brick‐structured GeSe is first synthesized by a rapid box thermal deposition method, and the thin film with such air brick novel structure demonstrates advanced photoelectrochemical (PEC) performance. It found that electrode position of few CdS nanoparticles (NPs) on microair (MAB) prior to chemical bath (CBD) buffer affects coverage/passivation efficiency onto MAB. In this case, electrodeposited particles were likely be seed for growth/adsorption Cd 2+ during subsequent CBD process also...

The ultracold mixture of $^{23}\mathrm{Na}$ and $^{87}\mathrm{Rb}$ atoms has become an important system for investigating physics in Bose-Bose atomic mixtures forming ground-state polar molecules. In this work, we provide improved characterization the most commonly used Feshbach resonance near 347.64 G between their absolute ground states. We form molecules using measure binding energies by dissociating them via magnetic-field modulation. use to refine singlet triplet potential-energy...

Abstract The Silk Road Economic Belt and the 21st‐Century Maritime Initiative, abbreviated as is a primary development strategy of China's future international cooperation. Especially, energy resource cooperation, including oil gas resources an important part this initiative. has undergone complicated geological evolution, contains abundant mineral such oil, gas, coal, uranium, iron, copper, gold manganese ore resources. Among these, Africa holds 7.8% world's total proven reserves. in are...

A Cu₂ZnSnS₄ based photoelectrode is driven to water splitting by NIR light which converted green visible upconversion nanoparticles.

We report the observation and manipulation of heteronuclear spin dynamics in a spin-1 mixture ultracold $^{87}$Rb $^{23}$Na atoms. The is driven by interspecies spin-dependent interaction shows pronounced dependence on magnetic fields with influences from both linear quadratic Zeeman shifts. Similar to well-studied homonuclear cases, can be controlled tuning shift far-detuned microwave fields. In addition, we successfully realize control vector light shifts which act as species-selective...

We demonstrate detection of NaRb Feshbach molecules at high magnetic field by combining molecular photodissociation and absorption imaging the photofragments. The process is carried out via a spectroscopically selected hyperfine Zeeman level correlated with Na ($3{P}_{3/2}$) $+$ Rb ($5{S}_{1/2}$) asymptote which, following spontaneous emission optical pumping, leads to ground-state atoms in single near unity probability. Subsequent dissociation, number obtained detecting resultant...

The beyond-mean-field Lee-Huang-Yang (LHY) correction is ubiquitous in dilute ultracold quantum gases. However, its effects are often elusive due to the typically much larger influence of mean-field (MF) energy. In this work, we study an mixture $^{23}\mathrm{Na}$ and $^{87}\mathrm{Rb}$ with tunable attractive interspecies interactions. LHY manifest formation self-bound liquid droplets expansion dynamics gas-phase sample. A liquid-to-gas-phase diagram obtained by measuring critical atom...

Kesterite photovoltaic materials of Cu2ZnSnS4 (CZTS) thin films present excellent photoelectrochemical (PEC) properties in solar water-splitting devices. It is found that photoelectrodes, including CZTS for water splitting, are suitable application seawater desalination due to the similarity their operation principle and work conditions photoelectrodes/solutions. Here we report a CZTS-based photocathode from splitting desalination. With TiO2 surface modification layer, shows superior...

Pinkish purple rhodamine B polluted water was efficiently photodegraded into colorless by the GeSe MAB crystal-based film under sunlight irradiation.

Solar Water Splitting In article number 1900559, Feng Jiang and co-workers present a 3D air brick-structured GeSe for advanced photoelectrochemical performance. Prior electrodeposited CdS particles have been found to be effective the growth of buffer layer therefore enhance solar water splitting The micro brick-based photocathode generates photocurrent density −14 mA/cm2 (0 VRHE), onset potential 0.47 VRHE, champion half-cell hydrogen conversion efficiency 1.47%.

We demonstrate high fidelity repetitive projective measurements of nuclear spin qubits in an array neutral ytterbium-171 ($^{171}$Yb) atoms. show that the qubit state can be measured with a 0.995(4) under condition leaves it corresponding to measurement outcome probability 0.993(6) for single tweezer and 0.981(4) averaged over array. This is accomplished by near-perfect cyclicity one states optically excited magnetic field $B=58$ G, resulting bright/dark contrast $\approx10^5$ during...

Objective To simulate and calculate the dosimetric parameters of GZP 60Co source that has been clinically used in high-dose-rate brachytherapy. Methods The EGSnrc Monte Carlo software was to a well known BEBIG (Co0.A86). The results were compared with actual verify feasibility this method. A model for brachytherapy established its same way. Results For source, accorded standard. air-kerma strength per unit activity (SK/A) dose rate constant (Λ) deviated from standard by 0.2%...