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61 results about "Atomic state" patented technology

Microwave electric field intensity meter based on cold Rydberg atom interferometer and measuring method thereof

ActiveCN104880614AHigh measurement accuracyMake up for the defect that only point frequency measurement can be realizedElectrostatic field measurementsRydberg atomBeam splitting
The invention discloses a microwave electric field intensity meter based on a cold Rydberg atom interferometer and a measuring method thereof. The microwave electric field intensity meter comprises: a vacuum system, which is used for cooling and trapping atom to generate a cold atom cloud for preparing a Rydberg state and generating an interference effect so as to generate a phase difference by coherent atomic states; a laser, which is used for generating coupling light and detection light and exciting the cold atom in the vacuum system from a ground state to the Rydberg state coherently; a photoelectric detector, which is used for detecting an interference fringe generated by two beams of cold atom clouds due to coherence; and a microwave source, which is used for generating a microwave electric field. According to the invention, when the microwave electric field intensity meter is applied to the evolution process of coherent beam splitting and combination, the atom cloud in the Rydberg state interacts with a to-be-measured microwave electric field, thereby generating an alternating-current stark effect; and the to-be-measured microwave electric field intensity is associated with a phase generated by the an alternating-current stark, thereby realizing precise measurement of the microwave electric field.
Owner:清远市天之衡量子科技有限公司

Aluminum-containing diamond-like carbon film and method for preparing same

The invention discloses an aluminum-containing diamond-like carbon film and a method for preparing the same. The film adopts a diamond-like structure and comprises 3 to 20 percent of metal aluminum and the balance of carbon; the metal aluminum is dispersed in the amorphous diamond-like carbon film in an atomic state and is not bonded with the carbon, and the thickness of the film is between 500 and 5,000 nanometers. The aluminum containing diamond-like carbon film has the advantages of lower internal stress, higher hardness, good film-substrate bonding force and good abrasion proof property.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Self-sustaining regeneration system and Larmor procession self-sustaining regeneration method

ActiveCN106996775AExtended spin precession coherence timeHigh precisionTurn-sensitive devicesMagnitude/direction of magnetic fieldsEngineeringQuantum gyroscope
The invention discloses a self-sustaining regeneration system and a Larmor precession self-sustaining regeneration method. The self-sustaining regeneration system comprises an optical pump, a detecting part, an atomic air chamber, a magnetic field, a magnetic shielding part and a circuit control part; wherein the optical pump and the detecting part are used for preparing atomic state and detecting atomic Larmor precession; the atomic air chamber and the magnetic field and the magnetic shielding part are used for providing working atoms and magnetic field environment of high stability and high uniformity; and the circuit control part is used for controlling pump light, detecting light timing sequence and completing self-sustaining regeneration process. According to the self-sustaining regeneration system and the Larmor precession self-sustaining regeneration method, a problem of short spin procession coherence time of a current quantum gyroscope is solved, a quantum gyroscope scheme extending the spin precession coherent time of the atoms is provided, accuracy and dynamic range of the quantum gyroscope are significantly improved, absolute magnetic field strength can be measured at the same time, and accuracy of magnetic field measurement is significantly improved.
Owner:TSINGHUA UNIV

Laser-assisted thin film preparation method and equipment

The invention discloses a laser-assisted thin film preparation method and corresponding equipment, and belongs to the field of thin film material preparation. The laser-assisted thin film preparation method comprises the following steps: feeding a gaseous precursor containing elements required for preparing a thin film into a plasma generating device, activating the gaseous precursor by using the plasma generating device, and then enabling the activated gaseous precursor to enter a reaction cavity; using a lens on the wall of the reaction cavity for converging laser beams emitted by a laser generating device, and then enabling the laser beams to enter the reaction cavity; heating the active gaseous precursor in the reaction cavity by using laser so as to split the active gaseous precursor, thus obtaining atomic state deposition elements, depositing the atomic state deposition elements on a substrate above the cavity, and growing so as to form the film on the substrate. The laser-assisted thin film preparation method has the advantages that the production cost of the thin film is greatly reduced, the equipment is simple, the process stability is good, the prepared thin film has high purity, good stability and high quality reliability and is uniform in morphology and particle sizes, and meanwhile, the relatively high thin film deposition rate can be realized.
Owner:李学耕 +1

Flash memory device and fabrication process thereof, method of forming a dielectric film

A fabrication process of a flash memory device includes microwave excitation of high-density plasma in a mixed gas of Kr and an oxidizing gas or a nitriding gas. The resultant atomic state oxygen O* or hydrogen nitride radicals NH* are used for nitridation or oxidation of a polysilicon electrode surface. It is also disclosed the method of forming an oxide film and a nitride film on a polysilicon film according to such a plasma processing.
Owner:OHMI TADAHIRO

Rydberg atomic draw ratio oscillation device and method

PendingCN111049592AHeat movement weakenedRemove non-uniform wideningPhotonic quantum communicationRydberg atomExcited state
The invention provides a Rydberg atomic pull ratio oscillation device and method. The method comprises the following steps: S1, respectively opening detection light and coupling light to excite atomsfrom a ground state to a Rydberg atomic state through the Rydberg atomic pull ratio oscillation device; S2, adiabatically turning off the coupling light and waiting for a time interval; and S3, opening the coupling light, enabling the atoms to jump to an excited state, and enabling the excited state to jump to a ground state and emit a photon under the influence of the storage time in the step S2.The Rydberg atom single-photon preparation and high-fidelity multi-photon detection prepared by the invention have the effects superior to those of common atoms, and have broad application prospectsin the field of quantum communication.
Owner:UNIV OF SCI & TECH OF CHINA

Preparation method for copper nanoparticles wrapped with single-layer graphene and grown on porous carbon material

The invention relates to a preparation method for copper nanoparticles wrapped with single-layer graphene and grown on a porous carbon material. The preparation method comprises the steps that three-dimensional graphene foam, porous carbon foam or porous metal foam serves as a conductive substrate, and the copper nanoparticles wrapped with the single-layer graphene is grown out on the surface of the conductive substrate through the chemical vapor deposition method. According to the preparation method for the copper nanoparticles wrapped with the single-layer graphene and grown on the porous carbon material, the copper nanoparticles are wrapped with the single-layer graphene, and the reaction activity of the copper nanoparticles is maintained; at the same time, the monatomic thickness of the single-layer graphene is utilized, and it is possible that electrons penetrate through the single-layer graphene and react with pollutants; the particle sizes of the copper nanoparticles are 5-50 nm, thus, surface copper atom unsaturated bonds are increased, and the reaction efficiency is further improved; and meanwhile, atomic state copper atoms are adopted as reaction precursors, so that the design of catalysts at the atomic level is possible.
Owner:见嘉环境科技(苏州)有限公司

Fountain type cold atomic clock

The invention relates to the technical field of atomic clocks, and discloses a fountain type cold atomic clock. On one hand, an atomic energy state selection mechanism is changed into an optical pumping state selection mechanism, an atomic state selection structure and a fluorescence detection structure can be combined into one, and then a state selection microwave cavity structure commonly used for the fountain type cold atomic clock can be removed, so that the overall height of a physical system structure is greatly reduced, the size and the weight of the atomic clock are effectively reduced, and movement, popularization and use are facilitated; and on the other hand, due to the fact that the atomic utilization rate is greatly improved through the optical pumping state selection, the number of atoms used for microwave inquiry is multiplied, the signal-to-noise ratio of a spectral line is increased, then the index influence caused by the fact that the line width of the spectral line is increased due to height reduction is counteracted, the index potential of the accuracy and the stability is equivalent to that of a current fountain type cold atomic clock, and the performance of the atomic clock cannot be affected due to height reduction.
Owner:CHENGDUSCEON ELECTRONICS

Integrating sphere magnetism-insensitive imprisoning system

An integrating sphere magnetism-insensitive imprisoning system mainly comprises a vacuum cavity, a magnetic field system and an optical path system. The integrating sphere magnetism-insensitive imprisoning system is used for manufacturing high-density and long-coherence-time cold atom sources. According to the integrating sphere magnetism-insensitive imprisoning system, an Ioffe-Pritchard micro magnetic trap is formed through an aligning Helmholtz coil and a single wire, and the magnetism-insensitive atomic state is searched for through a gradient field generated by the micro magnetic trap. The integrating sphere magnetism-insensitive imprisoning system has the advantages of being simple, small in size, low in power consumption, convenient to operate and favorable for forming coherent control researches on the atomic state in an integrating sphere, and a new technology is provided for finally developing small high-accuracy satellite-borne atomic clocks.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI

Nano silver antibacterial glue as well as preparation method thereof and intelligent detection system

The invention belongs to the technical field of nano silver antibacterial glue preparation, and discloses nano silver antibacterial glue as well as a preparation method thereof and an intelligent detection system. The intelligent detection system of the nano silver antibacterial glue and the preparation method thereof comprises a weighing module, a time module, a pH detection module, a temperaturedetection module, a main control module, a dissolution module, a mixing and stirring module, a heating module, a detection data storage module and a detection display module. The nano silver antibacterial glue provided by the invention has a better antibacterial effect and is lower in toxicity to human cells; silver in the antibacterial glue provided by the invention is in an atomic state and ata nanometer size, therefore, the loss of silver can be avoided, the oxidation can be delayed, and the antibacterial glue can keep the antibacterial activity for a long time; the invention provides thepreparation of nano silver powder by adopting water as a reaction solvent and an alcohol as a reducing agent, the reaction system is green and environmentally-friendly, high-quality nano silver powder is obtained, and the quality of the nano silver antibacterial glue is improved.
Owner:LULIANG UNIV

Preparation method of atomic state Ag-modified ZnO polycrystal nanobelt assembly structure with high hydrogen producing performance

The invention discloses a preparation method of an atomic state Ag-modified ZnO polycrystal nanobelt assembly structure with high hydrogen producing performance. The preparation method comprises the steps of weighing a certain amount of zinc acetate dihydrate, and dissolving the weighed zinc acetate dihydrate into deionized water to obtain a clear solution A; weighing a certain amount of hexamethylene tetramine and urea, and dissolving the weighed hexamethylene tetramine and urea into the deionized water to obtain a clear solution B; adding the solution B into the solution A, adding a certain volume of silver nitrate solution into the mixed solution, and evenly mixing to obtain a reaction system; transferring the mixed liquid into a reactor, and carrying out a reaction for 3-24h at the temperature of 60-100 DEG C; then, centrifuging, washing and drying; putting a dried solid into a tube furnace, and roasting to obtain a finished product. The preparation method provided by the invention is simple in operation and low in preparation cost, and can realize large-scale production; the obtained atomic state Ag-modified ZnO polycrystal nanobelt assembly structure is regular in morphology and adjustable in size; the atomic state Ag-modified ZnO polycrystal nanobelt assembly structure is used for simulating sunlight to carrying out photolysis on water so as to produce hydrogen, and the hydrogen production efficiency of the atomic state Ag-modified ZnO polycrystal nanobelt assembly structure is obviously higher than that of a pure ZnO nanostructure.
Owner:江西新节氢能源科技有限公司
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