Türkçe

Researchers have successfully developed the world's first superconducting broadband photon detector

455
2023-11-02 14:44:08
Çeviriyi gör

Researchers at the National Institute of Information and Communication Technology in the United States have invented a new structure of a superconducting strip photon detector that can achieve efficient photon detection even in wide strips, and have successfully developed the world's first superconducting wide strip photon detector.

The band width of the detector is more than 200 times that of traditional superconducting nanoband photon detectors. This technology helps to solve the problems of low productivity and polarization dependence in traditional SNSPD. The new SWSPD is expected to be applied to various advanced technologies such as quantum information communication and quantum computers, enabling these advanced technologies to be applied in society as soon as possible.

This work is published in the journal Optical Quantum.
Photon detection technology is a strategic core technology that is currently being intensively researched and developed globally in many advanced technology fields such as quantum information communication and quantum computing to achieve innovation. It is also an innovative technology in fields such as live cell fluorescence observation, deep space optical communication, and laser sensing.

The NICT research team has developed an SNSPD with a band width of 100 nm or less. They successfully achieved high-performance beyond other photon detectors and applied them to quantum information communication technology, proving their practicality. 

However, the preparation of SNSPDs requires the use of advanced nanoprocessing techniques to form nanoband structures, which can lead to changes in detector performance and hinder the improvement of productivity. In addition, the polarization dependence of superconducting nanoribbons due to their winding structure also limits their application as photon detectors.

In this work, NICT invented a new structure called "high critical current group structure", which can achieve efficient photon detection even by widening the band width in superconducting strip photon detectors. It successfully developed a SWSPD with a width of 20 microns, which is more than 200 times wider than traditional nanostrip photon detectors, and achieved high-performance operation for the first time in the world.

The nanobelt type developed by NICT requires the formation of extremely long superconducting nanobelts with a bandwidth of 100 nm or less, in a winding and tortuous shape. The broadband type can now be formed using only a single short straight superconducting tape.

This SWSPD does not require nanomachining technology and can be manufactured through high productivity universal lithography technology. In addition, due to the wider bandwidth of the stripe compared to the incident light spot illuminated from the optical fiber, polarization dependence in the nanostrip detector can be eliminated.

Through the performance evaluation of the detector, the detection efficiency in the telecommunications band is 78%, which is equivalent to 81% of the nanoband type. In addition, the numerical value of timing jitter is better than that of nanostrip type.

Compared with the nanobelt type, this achievement enables photon detectors to have higher productivity and superior performance and characteristics. Nanobelt type has been positioned as an indispensable photon detection technology in advanced technology fields such as quantum information communication. This technology is expected to be applied to various quantum information communication technologies and become an important foundational technology for achieving the networked quantum computer advocated by JST's lunar landing goal 6.

In the future, the team will further explore the HCCB structure in SWSPD, which can efficiently detect photons not only in the telecommunications band, but also in a wide range of wavelengths from visible light to mid infrared. In addition, they will also attempt to further expand the size of the photon receiving area to expand applications such as deep space optical communication technology, laser sensing, and live cell observation.

Source: Laser Network

İlgili öneriler
  • Laser manufacturer DIT signs KRW 20.52 billion agreement

    Recently, DIT, a well-known semiconductor and display equipment manufacturer in South Korea, announced that the company has signed an agreement worth 20.52 billion Korean won to supply wafer processing equipment to SK Hynix. After the announcement, DIT's stock price rose for five consecutive days, entering the 16000 Korean won range. Then on the 22nd, it rose 2580 Korean won from the previous day'...

    02-15
    Çeviriyi gör
  • Understanding the "single-mode" and "multi-mode" in cleaning lasers in one article

    In industrial production, cleaning is a crucial step. Traditional cleaning methods, such as mechanical cleaning and chemical cleaning, although can meet production needs to a certain extent, often have problems such as low flexibility and environmental pollution. With the advancement of technology, laser cleaning technology has emerged as a new favorite in the cleaning field due to its high effici...

    05-14
    Çeviriyi gör
  • Professor Wu Dong's team at the University of Science and Technology of China created a "dancing microrobot" using femtosecond laser composite materials.

    It was learned from the University of Science and Technology of China that the team of Professor Wu Dong of the Micro and Nano Engineering Laboratory of the school proposed a femtosecond laser two-in-one multi-material processing strategy, manufactured a micromechanical joint composed of temperature-sensitive hydrogel and metal nanoparticles, and then developed a multi-joint humanoid micromachine ...

    2023-08-11
    Çeviriyi gör
  • Continuation of the Term of President and CEO of Jena Germany

    Recently, the supervisory board of Jenoptik, a leading German laser technology company, announced an important decision: to extend and confirm the term of Dr. Stefan Traeger as Chairman of the Executive Board, with a new term of three years starting from July 1, 2025, and the contract validity period correspondingly extended to June 30, 2028. Dr. Stefan Traeger has been serving as the President ...

    2024-09-06
    Çeviriyi gör
  • Leica Measurement System Development First Person Laser Scanner

    Leica Geosystems, a subsidiary of Hexagon, has developed Leica BLK2GO PULSE, its first person laser scanner, which combines LiDAR sensor technology with the original Leica BLK2GO shape. The technology will be released in early 2024.The scanner provides users with a fast, simple, and intuitive first person scanning method that can be controlled through a smartphone and provides real-time full color...

    2023-10-19
    Çeviriyi gör