1002 results about "Quantum mechanics" patented technology

The present disclosure relates to an ion beam etching (IBE) system including a plasma chamber configured to provide plasma, a screen grid, an extraction grid, an accelerator grid, and a decelerator grid. The screen grid receives a screen grid voltage to extract ions from the plasma within the plasma chamber to form an ion beam through a hole. The extraction grid receives an extraction grid voltage, where a voltage difference between the screen grid voltage and the extraction grid voltage determines an ion current density of the ion beam. The accelerator grid receives an accelerator grid voltage. A voltage difference between the extraction grid voltage and the accelerator grid voltage determines an ion beam energy for the ion beam. The IBE system can further includes a deflector system having a first deflector plate and a second deflector plate around a hole to control the direction of the ion beam.

Samples and methods for determining beam spot size include scanning a pattern on a sample with a charged particle beam to generate an image. The pattern can include at least one sloped side edge and a top surface. The at least one sloped side edge can have a slope angle controlled during fabrication of the sample to be between about 40 to 80 degrees. The beam spot size can be determined based on an imaged profile of the at least one sloped side edge, the imaged profile being derived based on the image.

The application discloses a vacuum box and a quantum chip post-preparation device, and belongs to the technical field of quantum chip testing. The vacuum box is used for providing a vacuum environment for quantum chip preparation, and comprises a shell, a first space for implementing an annealing process on a quantum chip and a second space for implementing a resistance measurement process are arranged in the shell in communication, and a side wall of the second space is provided with an observation port penetrating the inside and the outside; a resistance measurement device arranged in the second space is used for resistance detection on the quantum chip; a cover is arranged to close the observation port and is in airtight connection with the shell, and the cover comprises a transparent area used for resistance detection observation. Through the above mode, the transparent area of the cover can be used for observing the quantum chip when the quantum chip is subjected to resistance detection by the resistance measurement device, so that better resistance measurement effect can be obtained.

This invention relates to a locally resonant metamaterial, aiming to provide a locally resonant metamaterial based on electromagnetic branch circuit damping to achieve control over the bandgap characteristics of the metamaterial. The technical solution is a locally resonant metamaterial based on electromagnetic branch circuit damping, characterized in that: the locally resonant metamaterial is composed of multiple cells arranged coaxially and connected end-to-end; each cell includes a rubber spring assembly, an upper cell shell and a lower cell shell connected in sequence, a resonator installed between the lower cell shell and the upper cell shell, and a branch circuit connecting a pair of coils in the resonator.

A magnetic modulator includes: a magnetic pole piece; a support portion disposed in an axial direction of the magnetic pole piece to rotationally support the magnetic pole piece; and a resin portion that integrates the magnetic pole piece and the support portion, in which at least one of both end surfaces of the magnetic pole piece in the axial direction is exposed.

The utility model discloses a kind of cathode heater subassemblies for klystron electron gun, it is characterized in that, including: cathode base, heater sleeve, heater and detachable heat shield assembly, the upper and lower two end surfaces of cathode base are respectively provided with emitting surface and mounting groove, heater sleeve is detachably fixed in mounting groove, and the end surface of heater sleeve back to cathode base is equipped with accommodating groove;Heater is installed in accommodating groove, and the part of heater in accommodating groove is wrapped with insulating layer;Heat shield assembly includes outer heat shield and inner heat shield, outer heat shield is sleeved in cathode base, and inner heat shield is installed in outer heat shield and covers heater sleeve and heater.The utility model can realize reversibility dismounting and maintenance, and heater material volatilization can be avoided directly deposited on the emitting surface of cathode base, help to maintain the emitting surface cleanliness of cathode base, to improve electron emission efficiency, high-temperature solder can also be reduced in use, reduce cost.

Technologies for closed-loop calibration of pulses to control spin qubits are disclosed. In an illustrative embodiment, calibration circuitry generates a pulse from a pulse generator. The pulse passes through a variable filter controlled by a filter parameter. The pulse is provided to a qubit, and the qubit is measured. Depending on the measured state of the qubit, the filter parameter can be changed. In this manner, the control pulses can be quickly and continuously calibrated. The calibration approach above offers several advantages. It can be implemented by circuitry close to the physical qubit, reducing opportunities for noise, cross-talk, etc. The calibration approach is scalable, as the calibration can be done quickly and continuously on a given qubit, and the same calibration circuitry can be multiplexed to interface with several qubits. The calibration circuitry can be on an integrated circuit, which can be in a cryogenic stage of the quantum computer.

This invention discloses an electric dipole Yagi antenna, comprising a dielectric substrate and a magnetically coupled metal structure. The top surface of the dielectric substrate is provided with an electric dipole driver, a reflector, and multiple parasitic antenna elements. The reflector is located on one side of the electric dipole driver, the magnetically coupled metal structure is located on the other side of the electric dipole driver, and the parasitic antenna elements are located on the side of the magnetically coupled metal structure away from the electric dipole driver. The electric dipole Yagi antenna has a novel structure, utilizing a magnetically coupled metal structure to replace the parasitic antenna elements closest to the electric dipole driver. This significantly improves the antenna gain without changing the original size of the electric dipole Yagi antenna, making it particularly suitable for applications with limited space.

The present invention provides a quantum entanglement light source device that takes advantage of the benefits of using optical fibers and can compensate for the decrease in polarization extinction ratio with a simple configuration. [Solution] A quantum entanglement light source device according to one embodiment of the present invention comprises a wavelength conversion unit capable of generating polarized light with a wavelength longer than the wavelength of the pump light, and a polarization control unit provided midway through optical fibers provided on both end faces of the wavelength conversion unit, capable of controlling the polarization direction of the pump light in the wavelength range.

The present disclosure provides a quantum random number generation method, device, equipment, system and storage medium, relates to the technical field of data processing, and particularly relates to the technical field of quantum computing, quantum random numbers and the like. A specific implementation scheme is as follows: determining a pulse feature of a target pulse applied on a target ion, wherein the target ion is an ion used as a quantum bit; applying the target pulse on the target ion based on the pulse feature of the target pulse, so that the target ion is in a target superposition state; and obtaining a quantum random number by using the target ion in the target superposition state.

A Josephson parametric amplifier packaging module, relating to the technical field of quantum computing. The Josephson parametric amplifier packaging module comprises a substrate (1), a magnetic shield (2), a circulator (3) and a Josephson parametric amplifier (4). The magnetic shield (2) is fixed on the substrate (1), and the magnetic shield (2) comprises a first cavity (201) and a second cavity (202). The circulator (3) and the Josephson parametric amplifier (4) are respectively located in the first cavity (201) and the second cavity (202), the circulator (3) comprises a first port (31), a second port (32) and a third port (33), and the Josephson parametric amplifier (4) comprises a signal port (41) and a pump port (42). The second port (32) is coupled to the signal port (41) by means of a connector (5), and the first port (31), the third port (33) and the pump port (42) extend to the exterior of the magnetic shield (2).

This application discloses a thin film, its preparation method, and an optoelectronic device, relating to the field of display technology. The thin film includes a first film layer, the material of which includes a first core-shell quantum dot. The first core-shell quantum dot includes a first quantum dot core and a first shell layer covering the first quantum dot core. The first film layer has a first surface and a second surface disposed opposite to each other. The thickness of the first shell layer near the first surface is less than the thickness of the first shell layer near the second surface. And / or, along the thickness direction of the thin film, the distance between the center of the first quantum dot core and the first surface is less than the distance between the center of the first quantum dot core and the second surface. The thin film provided in this application has a thinner first shell layer near the first surface, which is beneficial for improving electron injection efficiency, and a thicker second shell layer near the second surface, which is beneficial for preventing electron leakage to the hole side.

The present invention relates to methods of applying cementitious compositions comprising de-lithiated beta-spodumene by injecting, by spraying, or by layer-by- layer deposition, to cementitious compositions comprising de-lithiated beta-spodumene, and to the use of de-lithiated beta-spodumene to increase the shear modulus G of a cementitious composition.

The present disclosure relates to a module of a trap for charged particles (e.g. ions), to manufacturing such module, to a trap including the module and a manufacturing of such modular trap . The module comprises a monolithic body made of a non-conductive substrate and an electrode arranged on a portion of a surface of the monolithic body. A part of the monolithic body forms a spring element. An electrically conductive area is arranged on and covers a portion of a surface of the spring element and is conductively connected with the electrode. The spring element is adapted to compress upon pressure applied on the electrically conductive area.

The present invention relates to a diamond NV center-based educational quantum experiment device. The device may include: a main body having an upper housing and a lower housing; an optical experiment unit which is installed in the upper housing and by which a diamond NV center-based quantum experiment is performed; and an electronic control unit which is installed in the lower housing and controls the diamond NV center-based quantum experiment performed by the optical experiment unit, wherein multiple optical experiment components constituting the optical experiment unit are detachably installed in the upper housing and are installed such that the installation positions thereof are changeable. Through this, a quantum basic experiment is possible even without a low-temperature device or a large experimental space by using the diamond nitrogen vacancy as the qubit.

The invention relates to a device and a method for applying accelerated electrons to a liquid, wherein a) accelerated electrons are generated by means of an electron generator (10) which penetrate an electron exit window (11); b) a treatment chamber (12) is arranged parallel to the electron exit window (11), which is flowed through by the liquid to be applied with accelerated electrons;c) a free space (14) is formed between the electron exit window (11) and the treatment chamber (12) and is through which a first gas flows, and whereind) a reservoir (16) for receiving an ozone-containing second gas is formed below the treatment chamber (12), whereine) the second gas is formed at an overpressure in the reservoir (16), and whereinf) at least a region of a wall between the treatment chamber (12) and the reservoir (16) is formed as a plate-shaped element (18) into which a plurality of recesses (20) are provided, through which the ozone-containing second gas flows into the treatment chamber (12).

The application provides a magnetic attraction ring, comprising: a flexible magnet, a flexible layer and a flexible ring. The flexible magnet is used for magnetic attraction. The flexible layer wraps the flexible magnet. The flexible ring is integrally formed with the flexible layer. The flexible ring is located at one end of the flexible layer away from the magnet. The connection between the flexible ring and the flexible layer forms a ring insertion area. When a user's finger is located in the ring insertion area, one side of the user's finger is in contact with the flexible ring, the other side of the user's finger is attached to the flexible layer, and the other end of the flexible layer away from the flexible ring is a magnetic attraction surface. The flexible magnetic attraction ring is realized through the above structure.

Spin-Hall (SH) material (135) is provided near free regions (110) of magnetoresistive devices that include magnetic tunnel junctions (110, 115, 120). Current flowing through such SH material injects spin current into the free regions such that spin torque is applied to the free regions. The spin torque generated from SH material can be used to switch the free region or to act as an assist to spin-transfer torque generated by current flowing vertically through the magnetic tunnel junction, in order to improve the reliability, endurance, or both of the magnetoresistive device. Further, one or more additional regions or manufacturing steps may improve the switching efficiency and the thermal stability of magnetoresistive devices.

The application provides a magnetic attraction fixing structure for a battery pack, which comprises a shell, a plurality of battery modules arranged uniformly in the shell, a discharge slot and a charging port connected with the battery modules at two ends of the shell respectively, a magnetic attraction module fixedly installed on the shell and located at one end of the shell close to the discharge slot, a U-shaped insertion slot, an inner cavity width of the insertion slot matched with a width of the shell, a butt joint assembly comprising a contact tab and a magnetic attraction piece installed in the insertion slot respectively, the contact tab located at an end of the insertion slot far from the port and used for forming an electrical connection with the discharge slot, and the magnetic attraction piece located at an end of the insertion slot far from the port and used for forming a magnetic attraction connection with the magnetic attraction module. By arranging the magnetic attraction module at the end of the shell and matching the magnetic attraction piece in the insertion slot, the shell can be fixedly connected with the insertion slot through magnetic attraction, which is convenient for installation and disassembly, and when disassembling, only an external force needs to be applied to the shell to pull out the shell, without other operations, and is more suitable for people with limited mobility.

Provided are quantum control methods and systems. The method includes generating a control pulse in a quantum system, determining a measurement of a state of the quantum system in response to the control pulse, determining a control pulse correction based on the control pulse, the measurement of the state of the quantum system, and a model reference state, modifying the control pulse based on the control pulse correction, resulting in a modified control pulse, and generating the modified control pulse in the quantum system.

This invention discloses a therapeutic patch for directional excitation and targeted conduction of jade magnetic energy fields, comprising an empty patch and a medicated capsule. The empty patch includes, from top to bottom, a protective fixing layer, an energy guiding layer, a medicated capsule fixing and conduction layer, and a release layer, all sequentially bonded together. The medicated capsule is placed within the central groove or interlayer of the medicated capsule fixing and conduction layer. The energy guiding layer is formed by co-curing and molding jade micropowder and magnetic microparticles to create a mesh structure. This invention integrates magnetic therapy, jade physical therapy, and transdermal traditional Chinese medicine at the structural level, achieving directional synergy and enhancement of multiple energy fields.

The application discloses a kind of optically pumped atomic magnetic sensor test fixtures, it is related to sensor test auxiliary device.The purpose is to overcome the problems that existing test fixture test operation is complicated, test time is long and steering adjustment is difficult to meet test requirements, including sensor adjusting seat;Sensor adjusting seat includes cylinder, steering screw and a pair of positioning bolts;Sensor insertion hole is arranged on the cylinder, and the central axis of the sensor insertion hole has an acute angle with the vertical axis of the cylinder;A pair of positioning bolts are symmetrically arranged on the two side walls of the cylinder, and one end of the pair of positioning bolts is screw-connected with the cylinder;Steering screw is screw-connected with the cylinder, and the axis of the steering screw is perpendicular to the connecting line of the axis of the pair of positioning bolts;By adjusting steering screw, optically pumped atomic magnetic sensor is rotated around the connecting line as the pivot.

This invention provides a cathode-unitized X-ray source, a static CT imaging system, and an image enhancement method, comprising: a vacuum tube; a cathode end for emitting electron beams, the cathode end including an exposure control module and multiple electron emission units arranged in a matrix on the same side of the exposure control module, all electron emission units being independent and electrically connected to the exposure control module; an anode target bombarded by the electron beam, the anode target including an anode body and a target surface formed on the anode body, the target surface being located on the emission path of the electron emission units; when the exposure control module receives an external control signal, it establishes a voltage line between the selected electron emission unit and the exposure control module, the electron emission units emitting electrons one by one or row by row toward the target surface, and the target surface reflecting X-rays to a window under the bombardment of electrons. This invention can increase the scanning range, improve the image quality of static CT, and extend the lifespan of the X-ray source.

The present embodiments relate to a write head with an asymmetrical side gap (SG) design. In the asymmetrical design, the main pole can be disposed offset to a central axis of the write head such that the main pole is closer to a first side shield (SS) portion than a second SS portion. The asymmetrical design can be achieved using an ion-beam etching (IBE) or ion-beam deposition (IBD) process. The asymmetrical design can provide a narrower side gap width while mitigating any writability limitations or constraints caused by scaling down the SG.

This utility model discloses a magnetron assembly and a magnetron sputtering device. The magnetron assembly includes: a back plate; a first magnetic post disposed on the back plate; a plurality of second magnetic posts disposed on the back plate and surrounding the outer periphery of the first magnetic post; and a fixing assembly located at the top of the second magnetic posts to fix them. The fixing assembly includes: a plurality of fastening components arranged in a ring around the second magnetic post; each fastening component includes an inner ring fastener and an outer ring fastener; the top of the second magnetic post is located between the inner ring fastener and the outer ring fastener and is clamped and fixed by them; the inner ring fastener and the outer ring fastener are fixedly connected to the back plate to clamp and fix the second magnetic post axially. This utility model can achieve simple installation / removal of the magnetron and reduce costs.

This aims to increase the current flow rate of the ion beam containing aluminum ions drawn from the ion source, while also achieving stable ion beam extraction. [Solution] The ion source IS comprises a plasma generation chamber 3 and an aluminum-containing material 1 placed inside the plasma generation chamber 3. The aluminum-containing material 1 is an intermetallic compound, and the potential of the aluminum-containing material 1 is lower than the potential of the plasma generation chamber 3.

A quantum-assisted learning system comprises a quantum-assisted device and a feature learning processor. The quantum-assisted device measures multiple qubits corresponding to a quantum signal to generate multiple classical eigenvalues ​​and includes multiple quantum circuits for processing the quantum signal. Each quantum circuit performs the same quantum operation. The feature learning processor is coupled to the quantum-assisted device and is used to train a function based on the classical eigenvalues. This saves time queuing in the quantum computer queue.

The utility model discloses an insulating ring, including insulating ring main part, the material of insulating ring main part is silicon nitride, the utility model provides an insulating ring, uses silicon nitride as the insulating material of insulating ring can effectively reduce the background of sodium, aluminium, calcium and other elements under the condition of guaranteeing element test accuracy.