We demonstrate the existence of finite-component multicriticality in a qubit-boson model where biased qubits collectively coupled to single-mode bosonic field. The interplay between biases and boson-qubit coupling produces rich phase diagram which shows multiple superradiant phases boundaries different orders. In particular, become indistinguishable appropriate bias configurations, is signature multicriticality. A series universality classes characterizing these multicritical points are...

We investigate the charging process of open quantum battery in weak system-environment coupling regime. A method to improve performance a reservoir environment, which described by band-gap environment model or two-Lorentzian model, is proposed manipulating spectral density environment. find that optimal battery, characterized fast time and large ergotropy, can be obtained increasing weights two Lorentzians width second Lorentzian, sharp contrast Then we extend our discussion multiple coupled...

We discuss a one-dimensional coupled qubit-array quantum battery model under Born-Karman boundary conditions and investigate both the charging discharging processes. Applying stored energy, power, ergotropy as essential physical indicators of battery, it is observed that minimizing hopping interaction between nearest-neighbor qubits in increasing number during setup are crucial. Additionally, we employ classical driving field to optimize performance explore optimal by adjusting strength...

We propose a stable charging scheme for quantum battery in which the energy transfer of noninteracting charger-battery is induced by common photonic band gap (PBG). By manipulating transition frequency to form multiple bound states, it found that capability can be obtained without direct interaction between and charger. Among them, formation two states results lossless Rabi-like oscillatory behavior exchange. The three leads continuous collapse-revival process based on oscillation stored...

We investigate the qubit in hierarchical environment where first level is just one lossy cavity while second N-coupled cavities. In weak coupling regime between and environment, dynamics crossovers from original Markovian to new non-Markovian no-speedup speedup can be realized by controlling i.e., manipulating number of cavities or strength two nearest-neighbor environment. And we find that have opposite effect on evolution qubit. addition, case strong surprised that, compared with dynamics,...

One of the main challenges in developing high-performance quantum batteries is self-discharging process, where energy dissipated from a battery into environment. In this work, we investigate influence non-Markovian noises on performance battery. Our results demonstrate that adding auxiliary qubits to system can effectively suppress leading an improvement both steady-state and extractable work. We reveal physical mechanism inhibiting process formation system-environment bound states, rather...

To ensure high device yields, wafer surface contamination and defects must be monitored controlled during the entire process of semiconductor manufacturing. Particle concentrations on wafers, mostly related to chemical mechanical polishing (CMP) processes, kept at lowest possible levels. Brush scrubber cleaning has potential achieve this goal. However, particle removal mechanisms are still under discussion especially nano-sized particles. This paper investigates interactions between...

The maximal evolution speed of a quantum system can be represented by limit time (QSLT). We investigate the QSLT two-qubit passing through correlated channel (amplitude damping, phase and depolarizing). By adjusting correlation parameter initial entanglement, method to accelerate for some specific channels is proposed. It shown that, in amplitude damping depolarizing channel, may shortened cases increasing which are sharp contrast channel. In particular, under channels, transition from...

Brush scrubbers are among the most commonly used instruments for wafer-cleaning applications nowadays. However, removal mechanisms of nanosized particles far from clear, especially because no direct experimental data available to backup theoretical models in literature. This study combines a approach based on force analysis with an slurry particles. In part, all forces affecting adhesion and evaluated determine which dominant two extreme mechanisms: lifting rolling. efficiency 34nm SiO2 is...

In the process of using quantum resources to improve performance battery devices, device is highly restricted by decoherence due influence external environment. particular, fact that such devices are subject complex environmental influences in real scenarios should be taken into account. Here, we investigate (i.e., internal energy, charging power, and ergotropy) a double-layer environment, where first-layer environment single-mode cavity second-layer single reservoir. We surprised find...

We investigate the dynamics of an <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mi>N</a:mi></a:math>-qubit interacting system coupled to a common reservoir. In weak system-environment coupling regime, crossovers from Markovian non-Markovian and no speedup can be realized by adjusting controllable parameters (i.e., strength between qubits number qubits). However, in case strong coupling, multiple transitions regime induced manipulating parameters. addition, phenomenon noticed that...

Abstract We propose a quantum coherence protection scheme for two-qubit system by considering the exact evolution of multi-interacting qubits in common reservoir. find that l 1 norm and relative entropy can be noticeably enhanced increasing number weak/strong system-environment coupling regime, which contrasts sharply with impact between qubits. Moreover, infinite-time limit, all measures reach their steady values are determined only

Although entanglement is considered as a crucial resource for quantum information processing, it still unknown whether the presence of in working medium can enhance charging performance battery (QB). Here, we address this problem by considering QB with consisted an entangled coupled-cavity array. We show that optimal achieved two-cavity case when cavities are initially maximum state without cavity couplings. then extend our discussion to multicavity case. It demonstrated power under array be...

We have studied the particle removal efficiency of HF-based cleaning mixtures used to clean wafer surfaces during semiconductor manufacturing. and metallic oxide particles can be easily removed from silicon wafers using a clean, whereas especially Si polymeric is much more difficult. This explained in terms surface hydrophobicity effects. For thermal substrates, low observed for positively charged particles. has been previously by redeposition carry-over layer final rinse [R. Vos, I....

Capacity of dense coding via correlated noisy channel is greater than that uncorrelated channel. It shown the weak measurement and reversal need to further improve their quantum capacity in amplitude damping channel, but this improvement very small phase depolarizing

We fabricated (Ga,Mn)As/AlOx/Co40Fe40B20 magnetic tunnel junctions with ferromagnetic semiconductor/insulator/ferromagnetic metal (S/I/F) structure. The treatments of pre-annealing and post-plasma cleaning on the (Ga,Mn)As film were introduced before growth subsequent layers. A high tunneling magnetoresistance (TMR) ratio 101% is achieved at 2 K, spin polarization (Ga,Mn)As, P = 56.8%, deduced from Jullière’s formula. improved TMR primarily due to magnetism layer by low-temperature annealing...

In recent years, applying slag micro-powder as a substitute for cement in preparing alkali-activated stabilized sand (AASCSS) mixtures has become increasingly widespread. the severe cold regions of Xinjiang, multi-objective optimization mechanical and frost resistance properties AASCSS is particularly crucial. This paper adopts to replace Portland cement, together with lime desulfurization gypsum activators, explore effects activator type dosage on frost-resistance AASCSS. A prediction model...