20 results about "Diamond color" patented technology

The invention relates to the technical field of diamond color center quantum light sources, in particular to a method for preparing a diamond color center in a positioning mode, and the method comprises the following steps that a single-face polished sapphire sheet serves as a substrate, and a microwave plasma chemical vapor deposition method is adopted for preparing a single crystal diamond with a (001) surface; preparing a metal layer on the surface of the monocrystal diamond by adopting a physical vapor deposition method, and dehumidifying and self-assembling to form balls; etching the surface of the monocrystal diamond (001) at a high temperature in a hydrogen atmosphere to form a conical pit structure with a different surface; and selectively growing a diamond color center in the cone pit by adopting a chemical vapor deposition method. Aiming at the problems that the existing ion implantation technology for positioning and preparing the diamond color center is difficult to realize nanoscale accurate control and high in cost, a foundation is laid for the integration and low-cost preparation of the high-purity and high-brightness diamond single photon source.

1. Name of the product in this design: Magnetic Sheet (Diamond Stained Window Construction Sheet). 2. Purpose of this design: For building toys using magnetic tile blocks. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Designate Design 1 as the base design. 6. This product is made of transparent material.

The invention relates to the technical field of temperature control, in particular to a temperature control system and method based on an NV color center, and the system comprises a diamond NV color center temperature sensing module which is used for sensing the temperature change of a target area in real time and generating a corresponding fluorescence signal; the dual-channel demodulation and signal processing module is connected with the diamond NV color center temperature sensing module and is used for extracting an actual temperature value from the fluorescence signal; the PID temperature control module is connected with the dual-channel demodulation and signal processing module and is used for generating a control signal according to the deviation between the actual temperature value and the target temperature value; and the adjustment execution module is connected with the PID temperature control module and is used for adjusting the temperature of the target area according to the control signal. The high-stability temperature control system has the beneficial effects that diamond NV color center quantum sensing, two-channel demodulation and PID closed-loop control technologies are fused, and high-stability temperature control of milliKelvin-level precision and microsecond-level response under the micro-nano scale is realized.

This invention belongs to the field of micro / nano fabrication technology, specifically a method for preparing a diamond color center array based on a phase-separated nanomask. The invention includes two schemes: Scheme 1 includes: pretreatment of diamond raw material; deposition of a hard mask layer on the diamond surface; coating an adhesive layer; coating with a phase-separable patterned block copolymer or a polymeric material such as a biomolecule that can be assembled; annealing the diamond; selectively etching the surface film to form a nanomask; nitrogen ion implantation to form an NV color center array; removing the hard mask; and removing surface carbon impurities through vacuum high-temperature annealing and acid washing to obtain a high-quality color center array. Scheme 2 simplifies the hard mask deposition steps by directly coating a thick film of a phase-separable patterned polymeric material onto the diamond raw material surface. This invention achieves low-cost, high-mask precision and resolution, high-throughput scalability, and large-area nanomask ion implantation color center array preparation by employing two different process flows.

A diamond sensor unit includes: a diamond having a color center with electron spin; an excitation light irradiation part that irradiates the diamond with excitation light; a first patch antenna that receives electromagnetic waves; an electromagnetic wave irradiation part that irradiates the diamond with the electromagnetic waves received by the first patch antenna; a detection part that detects radiated light radiated from the color center of the diamond after the diamond is irradiated with the excitation light and the electromagnetic waves; and an optical waveguide that transmits the excitation light and the radiated light.

The automatic diamond color grader can carry out color grading on diamonds on a continuous line, and manual color evaluation is not needed. And a sample diamond is conveyed by the input conveying belt and is placed on the mounting seat on the rotating plate by the mechanical arm. Nm mounting seats are arranged on the rotating plate, and Nr colorimetric stones with known color grades and Ns sample diamonds are mounted on the mounting seats. The camera shoots pictures of all diamonds on the rotating plate, then the stepping motor rotates the rotating plate by 360 / Nm degrees, and another picture is shot. The operation is repeated for Nm times, so that the sample diamond and all the colorimetric stones are respectively imaged at all Nm possible rotating positions. Averaging the pixels of all positions of each diamond to obtain x and y average values of each diamond; and the color grade of the sample diamond is the closest colorimetric stone with light x and y average values.

The invention provides a high-frequency microwave frequency source and communication equipment, and relates to the technical field of frequency sources. The frequency source comprises a laser, a diamond color center, a gain medium ring, a resonant cavity, a superconducting magnet coil, an antenna and a DDS. The diamond color center is arranged in the gain medium ring, and the axial direction is perpendicular to the direction of an oscillating magnetic field of the gain medium ring; the gain medium ring is arranged in the resonant cavity, and the axial direction of the diamond color center is perpendicular to the magnetic field direction of the resonant cavity; the resonant cavity is arranged in the superconducting magnet coil, and the axial direction of the diamond color center is parallel to the magnetic field direction; laser emitted by the laser device is incident along the axial direction of the diamond color center; the input end of the DDS penetrates through the side wall of the resonant cavity and is connected with an antenna arranged in the resonant cavity, and the output end of the DDS is used for outputting terahertz signals. Terahertz signals are generated by means of the stimulated radiation phenomenon caused by Zeeman splitting in the diamond color center, the power is large, the signal-to-noise ratio is high, and the stability is good.

The application discloses integrated quantum diamond magnetometer, belongs to quantum magnetic sensing technical field, including by laser, optical fiber beam splitter, optical fiber probe, diamond particle, filter system, optical detector, microwave source, isolator, microwave antenna, phase-locked control system and scanning module composition;Adopt high numerical aperture optical fiber and diamond color center optical coupling, improve the transmission efficiency of excitation light and fluorescence;The microwave structure is integrated in the optical fiber probe, realizes the all-fiber integration of the light and microwave system integration;The optical fiber probe is filled with high transmission solidified material between the diamond, avoids the color center damage;The scanning module composed of the non-magnetic object table and the displacement table can realize the relative displacement of the probe and the sample, complete the three-dimensional scanning imaging of the strong gradient magnetic field. The integrated quantum diamond magnetometer provided by the application solves the problems of low integration degree of traditional equipment, light path drift and inability to realize gradient field scanning, and is convenient for equipment landing and popularization.

The invention discloses a multi-sensing-unit mutual correction tracking quantum magnetic measurement method and system for tunnel magnetoresistance and a diamond color center, a storage medium and electronic equipment. The method comprises the following steps: measuring an absolute magnetic field value of a microwave signal based on an NV color center sensing unit; determining calibration parameters of the TMR sensing unit based on the absolute magnetic field value; the voltage value output by the TMR sensing unit with the determined calibration parameters is converted into a TMR prediction magnetic field, and the TMR prediction microwave frequency is obtained through the TMR prediction magnetic field; calculating an NV measurement magnetic field based on the TMR prediction microwave frequency or the NV prediction frequency calculated by the NV color center sensing unit in the previous period; and calculating a magnetic field tracking signal based on the TMR prediction magnetic field and the NV measurement magnetic field, and taking the magnetic field tracking signal as a final magnetic field intensity value.

The invention relates to the technical field of terahertz signal detection, and provides a terahertz signal detection fluorescence system based on a diamond color center, and the system comprises an objective table which is provided with a diamond; the terahertz signal generation light path is used for generating a terahertz signal with adjustable frequency and acting on a Pb color center of the diamond; the phonon signal detection light path comprises a fluorescence detection module, a demodulation module and a signal processing module, the fluorescence detection module is used for enabling generated laser to act on the Pb color center of the diamond to generate a mixed fluorescence signal, the demodulation module is used for separating the mixed fluorescence signal to obtain two light signals, the intensity difference is determined according to the two light signals, and the signal processing module is used for processing the intensity difference; the signal processing module is used for determining the numerical value of the terahertz signal based on the electric signal. Therefore, high-sensitivity and direction-selectivity detection and real-time monitoring of terahertz signals can be realized by utilizing the quantum characteristic of the Pb color center of the diamond and the collaborative design of double optical paths.

1. The name of the design product: magnetic sheet (diamond color window building sheet). 2. The use of the design product: building toys for magnetic sheet building blocks. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view. 5. The design product is made of transparent material.

An automated diamond color-grading machine color grades a continuous line of diamonds without human color evaluation. A sample diamond is carried by an input conveyor and placed on a mount on a rotating plate by a robotic arm. The rotating plate has Nm mounts with Nr master stones of known color grades and Ns sample diamonds. A camera takes a photo of the rotating plate with all diamonds and then a step motor rotates the plate by 360 / Nm degrees and another photo captured. This is repeated Nm times so that the sample diamond and all master stones are each imaged in all Nm possible rotational positions. Pixels are averaged over all positions for each diamond to get an average x, y value for each diamond. The color grade of the sample diamond is the master stone with the closest less-color x,y average.

The utility model relates to the technical field of laser processing, in particular to a diamond color center processing system. Comprising a laser beam splitting module, laser is split into processing laser and initial intensity detection laser, the processing laser is used for preparing the diamond NV color center, sample detection laser containing target fluorescence and intensity detection laser are obtained at the same time, the sample detection laser is subjected to fluorescence filtering to obtain the target fluorescence, then detection is conducted, and the preparation effect of the NV color center is obtained; the intensity detection laser performs fluorescence isolation to obtain light except target fluorescence, then detection is performed, whether the processing laser meets the requirement for NV color center preparation or not is judged, and the diamond color center processing system integrating NV color center preparation, detection and characterization is achieved. The wavelength of laser used by the diamond color center machining system and an optical element can be flexibly adjusted according to experimental requirements, and femtosecond laser precise micro-nano machining on the surface or the interior of diamond or other hard materials at normal temperature and normal pressure is achieved.

The application provides a diamond color center microwave generator and a preparation method thereof. The diamond color center microwave generator is composed of arrayed diamond color center columns, laser diodes, sapphire resonant cavities, copper resonant cavities and microwave antennas. The diamond color center columns of each array unit can realize energy level deflection under the action of an external magnetic field, particle number inversion under the action of laser excitation, stimulated radiation under the action of external microwave particles received by the microwave antennas, and avalanche microwave particle amplification after resonance of the sapphire resonant cavities and the copper resonant cavities. The output powers of the array units are accumulated, and the microwave output power of the diamond color center microwave generator is increased.

The application provides a quantum current sensor and a current measurement method, which comprise a diamond NV sensing chip, a magnetic concentrating ring, a laser source, a photoelectric conversion module, a microwave modulation and demodulation module and a magnetic flux regulation module; the magnetic concentrating ring is provided with an opening for sensing the magnetic flux of a measured wire; the diamond NV sensing chip is used for detecting the magnetic flux at the opening; the laser source is used for generating a laser signal of a preset wavelength and outputting the laser signal to the diamond NV sensing chip; the photoelectric conversion module receives a reflected fluorescent signal, converts the fluorescent signal into an electric signal and transmits the electric signal to the microwave modulation and demodulation module to finally obtain a demodulation voltage; and the magnetic flux regulation module obtains a reverse magnetic flux loaded to the magnetic flux detection module based on the demodulation voltage, so as to maintain the magnetic flux at the opening. The application provides the reverse magnetic flux, so that the magnetic field sensed at the NV color center is always in a small range, the problem that the diamond NV color center is difficult to detect under a large current magnetic field is avoided, and the dynamic range of the diamond NV color center for measuring the current is effectively widened.

A diamond magnetic sensor unit includes: a sensor part that includes a diamond having a color center with electron spin; an excitation light irradiation part that irradiates the diamond with excitation light; and a detection part that detects radiated light from the color center of the diamond, wherein the detection part detects the radiated light caused by irradiation of the diamond with the excitation light by the excitation light irradiation part without the diamond being irradiated with electromagnetic waves, and a conductive member that is disposed 10 mm or more apart from the sensor part, and transmits the electromagnetic waves can be included.

The invention discloses a preparation method of an artificial diamond, and relates to the technical field of preparation of artificial diamonds. According to the preparation method disclosed by the invention, unreacted carbon and nitrogen elements in the originally discharged tail gas are converted into available gaseous carbon and nitrogen sources again through a technical path of tail gas recovery, pyrolysis purification and reutilization, and the available gaseous carbon and nitrogen sources are introduced into an MPCVD deposition system again to participate in diamond growth, so that the total utilization rate of the carbon and nitrogen elements in the hair is greatly increased, and the production cost is reduced. While the purity of the diamond is ensured, the uniform color of the diamond is ensured, and the requirements of high-grade customized diamond customers for making commemorative large-size / high-purity diamonds are met.

Local quantum communication networks for general-purpose quantum computing may use millions of physical qubits to encode thousands of logical qubits, presenting a substantial hardware architecture challenge. Our modular Quantum System-on-Chip (QSoC) architecture uses a quantum microchiplet (QMC) that features compact two-dimensional arrays of diamond color centers with a resonant dielectric antenna integrated on a foundry-processed chip. Our QSoC architecture enables full connectivity for quantum memory arrays in a set of different resonant frequencies and offers the possibility of further scaling the solid-state physical qubit number via larger and denser QMC arrays and optical frequency multiplexing networking. Our QSoC architecture can efficiently generate a large scale fully connected qubit state by tuning the emitters' emission frequency. Larger qubit resources can achieve a connected qubit cluster state with less tunabiliy. Our QSoC architecture can be readily extended to other solid-state quantum memory platforms.

1. The name of the design product: toy (diamond color cosmetic box). 2. The use of the design product: the design product is used for children to play. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

1. The name of the design product: CD-ROM (multifunctional diamond color lamp 912). 2. The use of the design product: The product combines DVD, CD-ROM, can carry out traditional data storage, and can read the information stored on the CD-ROM, and can record the information in the hard disk on the CD-ROM. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.