Entangling magnon and superconducting qubit by using a two-mode squeezed-vacuum microwave field

2021 ◽  
Vol 38 (10) ◽  
pp. 3020
Author(s):  
Chen-Xi Ning ◽  
Miao Yin
Keyword(s):  
Microwave Field ◽  
Superconducting Qubit ◽  
Squeezed Vacuum ◽  
Vacuum Microwave

scholarly journals ВАКУУМНІ МІКРОХВИЛЬОВІ ТЕХНОГІЇ ПРИ ВИРОБНИЦТВІ ФІТОПРЕПАРАТІВ З ПЛОДІВ ШИПШИН

2018 ◽  
Vol 82 (1) ◽  
Author(s):  
Юлия Олеговна Левтринская ◽  
Юсеф Альхурі ◽  
Яна Андріївна Голінська ◽  
Сергій Георгійович Терзієв
Keyword(s):  
Vitamin C ◽  
Microwave Field ◽  
High Energy ◽  
Sample Treatment ◽  
Health Food ◽  
Reduced Pressure ◽  
Vacuum Microwave ◽  
Group A ◽  
Extraction Processes ◽  
Scientific Group

У даній статті представлено результати досліджень процесів екстрагування у мікрохвильовому полі в умовах зниженого тиску. Об’єктом досліджень обрано плоди шипшини – багаті на термолабільний вітамін С. При екстрагуванні у створеному зразку екстрактора температури не перевищують 50 °С. За таких температур зберігається більше вітаміну С, краще зберігається колір та смак. Проведені лабораторні дослідження підтверджують підвищений вміст вітаміну С у екстракті. У порівнянні з технологіями, які зараз застосовуються на фармацевтичних підприємствах при виробництві екстрактів шипшини створені екстрактор та випарна установка мають ряд переваг: проста конструкція, безпечність, знижені робочі температури, енергетична ефективність. Підвищення виходу екстрактивних речовин можна пояснити особливим протіканням процесу за умов впливу мікрохвильового поля та виникненню явища бародифузії, що значно інтенсифікує перехід компонентів, що містяться у капілярах до екстракту.In this paper are presents the results of studies of extraction processes in a microwave field under conditions of reduced pressure. The object of research are the rose hips – rich in thermolabile vitamin C. According to previous studies, under the action of the microwave field possible reach a significant intensification of extraction processes. This is due to barodiffusion – a phenomenon that occurs in the capillaries of plant material. These principles are the base for innovative facilities designed by our scientific group: a microwave vacuum extractor and a microwave vacuum evaporator. During the sample treatment in an extractor, the temperature does not exceed 50 °C. At these conditions saved more of vitamin C, color and taste are better preserved. The laboratory researches confirm that the high content of vitamin C is present in the extract. Compared to the technologies that are applied be pharmaceutical companies in the production of rose hips extracts and evaporators, they have several advantages: simple design, safety, reduced working temperatures, high energy efficiency, shortening of processes. With microwave extraction it is possible to obtain the extracts that contain non-typical components for aqueous extracts precisely due to barodifusion. So, with the use of one solvent, can be obtained a polyextract on the same installation. These technologies are actual in the first place for the pharmaceutical industry and the market of health food products. The comparison of vacuum microwave and cryoconcentration technologies are performed. It is wellknown that the best way to concentrate products with high vitamin C content is cryoconcentration. Obtained in that research results indicate that the quality of the extract produced in the vacuum microwave evaporator is similarly to cryoconcentrate.  

niSWAP and NTCP gates realized in a circuit QED system

2017 ◽  
Vol 14 (07) ◽  
pp. 1750100 ◽  
Author(s):  
K. Essammouni ◽  
A. Chouikh ◽  
T. Said ◽  
M. Bennai
Keyword(s):  
Numerical Simulation ◽  
Quantum Logic ◽  
Gate Voltage ◽  
Microwave Field ◽  
Logic Gates ◽  
Superconducting Qubit ◽  
Circuit Qed ◽  
Dephasing Time ◽  
Quantum Logic Gates ◽  
Decoherence Time

Based on superconducting qubit coupled to a resonator driven by a strong microwave field, we propose a method to implement two quantum logic gates ([Formula: see text]SWAP and NTCP gates) of one qubit simultaneously controlling [Formula: see text] qubits selected from [Formula: see text] qubits in a circuit QED [Formula: see text] by introducing qubit–qubit interaction. The interaction between the qubits and the circuit QED can be achieved by tuning the gate voltage and the external flux. The operation times of the logic gates are much smaller than the decoherence time and dephasing time. Moreover, the numerical simulation under the influence of the gates operations shows that the scheme could be achieved efficiently with presently available techniques.

Interference Effects of a Powerful Pulsed Microwave Field on Microphone Devices

2007 ◽  
Vol 66 (17) ◽  
pp. 1583-1590
Author(s):  
A. V. Berdyshev ◽  
V. V. Shcherenkov ◽  
A. P. Yarygin ◽  
Vladimir B. Avdeev
Keyword(s):  
Microwave Field ◽  
Interference Effects

THE ENERGY EFFICIENCY TECHNIQUE OF THERMAL PROCESSING OF GRAIN

2019 ◽  
pp. 176-182
Author(s):  
А. Zykov ◽  
S. Orlova ◽  
L. Ovsiannykova
Keyword(s):  
Energy Efficiency ◽  
Thermal Processing ◽  
Microwave Field ◽  
Low Frequency ◽  
Heat Pipes ◽  
Biologically Active ◽  
Microwave Drying ◽  
Post Harvest ◽  
Combined Action ◽  
Frequency Radiation

The methods of energy efficiency increasing of pre- and post-harvest thermal processing of grain are considered. The effective ways to deliver energy to the grain using heat pipes and microwave field are given. The effect of combined action of microwave and low-frequency radiation on the grain germination is shown. Currently, the intensification of technological processes under the influence of microwave radiation is used in many industrial processes. Microwave equipment is becoming a necessary technological component of large profitable industries. The process of drying is no exception. In recent years, new versions of dryers have been proposed that use combined methods of energy supply, including microwave energy. Microwave dryers for foodstuffs, grains and oilseeds, including those for seed stock, have been created and are beginning to be used, along with drying and disinfection, disinfection of drying products from harmful bacteria, fungi, and mildew. For the implementation of microwave drying of particular importance is the choice of regime parameters of drying, given the fact that the grain is a biologically active object. Microwave drying allows you to provide a powerful flow of energy to the object of drying and to obtain a significant intensification of moisture evaporation. But at the same time there is also an intense heating of the product, which can degrade its quality. The possibility of supplying energy throughout the cross section of the product allows for the evaporation of moisture from the inner layers of the product, which is especially important at the end of drying, when the zone of evaporation of moisture is significantly deeper. Therefore, the highest drying efficiency can be obtained in combined processes that take advantage of various drying methods, such as convective, as well as the use of microwave and low-frequency magnetic fields. The paper presents effective ways to supply energy to the grain using heat pipes and a microwave field. The effect of the combined action of microwave and low-frequency radiation on grain similarity is shown. Ways to improve the energy efficiency of the processes of preseeding and post-harvest heat treatment of grain are considered.

Oxidation decomposition of toluene waste gas by catalyst in microwave field

2018 ◽  
Vol 35 (6) ◽  
pp. 582 ◽  
Author(s):  
Ning WANG ◽  
Bin GUO ◽  
Xin WANG ◽  
Xurui HU ◽  
Ailing REN ◽  
...  
Keyword(s):  
Microwave Field ◽  
Waste Gas

Mathematical Description of the Influence of the Bunker Outlet on the Grain Motion in the Microwave Convective Area

2020 ◽  
pp. 73-80
Author(s):  
Aleksey N. Vasil’yev ◽  
Andrey A. Tsymbal ◽  
Aleksey A. Vasil’yev
Keyword(s):  
Mathematical Description ◽  
Microwave Field ◽  
Convective Zone ◽  
Research Purpose ◽  
Field Zone ◽  
Flow Process ◽  
Grain Processing ◽  
Grain Flow ◽  
The Right ◽  
Processing Zone

One of the environmentaly friendly methods of drying and decontamination of grain is its processing in microwave-convective installations. The efficiency of using the microwave field depends on the uniformity of its distribution in the grain processing zone. This is provided by the design features of the microwave core and waveguides. The uniformity of grain movement in the microwave field zone is important. It is important that the grain is moved in the microwave convective zone by hydraulic movement. In this case, the grain passes through zones with different intensity of the microwave field sequentially and the grain processing is uniform. (Research purpose) The research purpose is in making a mathematical dependence of parameters of the hopper outlet on the movement of grain in the microwave convective zone. (Materials and methods) The article presents the parameters of the outlet that ensure the grain flow without forming static arches in accordance with the method of calculating outlet bins. Fluctuations in humidity for different crops of processed grain will not lead to a violation of the grain flow process. The resulting equation for changing the height of the dynamic arch, depending on its location in the height of the hopper, allows to determine the uneven flow of grain from the hopper outlet. (Results and discussion) When unloading grain, there is an uneven flow in the right and left halves of the hopper, relative to the central axis. When only one hopper is unloaded, 0.84 kilograms more wheat is unloaded from its left half than from the right. This difference leads to uneven and reduced efficiency of grain processing in the microwave-convective zone. (Conclusions) To ensure the uniformity of grain processing in the microwave convective zone, it is necessary to improve the mechanism of grain flow from the outlet of the hopper.

Microwave Field Distribution Uniformity Coefficient in the Grain Mass

2020 ◽  
Vol 67 (2) ◽  
pp. 87-92
Author(s):  
Dmitriy A. Budnikov
Keyword(s):  
Electromagnetic Field ◽  
Numerical Experiment ◽  
Microwave Field ◽  
Research Purpose ◽  
Coefficient Of Determination ◽  
Material Research ◽  
Dense Layer ◽  
Uniformity Coefficient ◽  
Average Value ◽  
Processed Material

The article considers the microwave electromagnetic fields as one of the options for improving the thermal drying of grain. Their application is limited by the high unevenness of the field propagation in the layer of the processed material. (Research purpose) The research purpose is in justifying the uniformity of distribution of microwave field in the layer of the processed grain. (Materials and methods) The article presents the scheme of computer models of microwave processing zones and waveguides, properties of materials for conducting a numerical experiment. (Results and discussion) A numerical experiment was performed to determine the uniformity coefficient of propagation of the microwave field in a layer of grain material. The article presents the dependencies. (Conclusions) It was found that the results of modeling the distribution of the electromagnetic field in the zone of microwave convective influence of the installation containing two sources of microwave power for processing the grain layer indicate a high level of its unevenness in the volume of the product pipeline. To assess the uniformity of the distribution of the electromagnetic field in the working area of a laboratory installation, there used a coefficient that is the ratio of the average value of the intensity in the zone of microwave convective action to its average value of the wave strength passing through the output of the waveguide. The values of the uniformity coefficient in the considered implementation options are in the range of 0.1757-0.4946 for a dense layer of wheat. To ensure a sufficient level of uniformity of the electromagnetic wave distribution in the volume of the microwave convective zone, the uniformity coefficient must be higher than 0.37. The article presents the dependence of the uniformity coefficient of the electromagnetic field on the humidity of the processed material by a third-degree polynomial with a coefficient of determination higher than 0.98.

Dual-gate gallium-arsenide microwave field-effect transistor

1971 ◽  
Vol 7 (22) ◽  
pp. 661 ◽  
Author(s):  
J.A. Turner ◽  
A.J. Waller ◽  
E. Kelly ◽  
D. Parker
Keyword(s):  
Gallium Arsenide ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Microwave Field ◽  
Dual Gate ◽  
Effect Transistor

scholarly journals Spectrum of the Dicke model in a superconducting qubit-oscillator system

2019 ◽  
Vol 99 (6) ◽  
Author(s):  
S. Ashhab ◽  
Y. Matsuzaki ◽  
K. Kakuyanagi ◽  
S. Saito ◽  
F. Yoshihara ◽  
...  
Keyword(s):  
Superconducting Qubit ◽  
Oscillator System ◽  
Dicke Model
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