English

New discoveries bring progress in photon calculation

1017
2024-04-27 14:19:49
See translation

International researchers led by Philip Walther from the University of Vienna have made significant breakthroughs in the field of quantum technology, successfully demonstrating quantum interference between multiple single photons using a new resource-saving platform. This work, published in Science Advances, represents a significant advancement in the field of quantum computing and paves the way for more scalable quantum technologies.

The interference between photons is a fundamental phenomenon in quantum optics and the cornerstone of optical quantum computation. It involves using the characteristics of light (such as the wave particle duality of light) to induce interference modes, thereby achieving the encoding and processing of quantum information.

In traditional multiphoton experiments, spatial encoding is commonly used, which involves manipulating photons on different spatial paths to induce interference. These experiments require complex equipment and numerous components, making them resource intensive and difficult to scale.
In contrast, an international team composed of scientists from the University of Vienna, Politecnico di Milano, and the Free University of Brussels chose a time coding based approach. This technique manipulates the temporal rather than spatial statistics of photons.

To achieve this method, they developed an innovative architecture using fiber optic loops at the Christian Doppler Laboratory at the University of Vienna. This design can reuse the same optical components to achieve efficient multiphoton interference with minimal physical resources.

Multiphoton interference network
The first author Lorenzo Carosini explained, "In our experiment, we observed quantum interference between up to eight photons, exceeding the scale of most existing experiments. Thanks to the versatility of our method, the interference mode can be reconfigured and the experimental scale can be expanded without changing the optical device."

The research results indicate that compared with traditional spatial encoding methods, the implemented architecture has significant resource efficiency, paving the way for more easily accessible and scalable quantum technologies.

Source: Physicist Organization Network

Related Recommendations
  • Bohong has developed a new type of ultrafast laser for material processing

    Chief researcher Clara Saraceno will bring the new laser to the market with the support of ERC funding.Femtosecond lasers can be used to create high-precision microstructures, such as those required for smartphone displays and various automotive technology applications.Professor Clara Saraceno from Ruhr University in Bochum, Germany is committed to developing and introducing cheaper and more effic...

    2023-08-22
    See translation
  • Researchers have captured the strange behavior of laser induced gold

    A new study conducted by the US Department of Energy's SLAC National Accelerator Laboratory has revealed the strange behavior of gold when impacted by high-energy laser pulses.When certain materials are subjected to strong laser excitation, they will quickly disintegrate. But gold is exactly the opposite: it becomes more resilient and resilient. This is because the way gold atoms vibrate together ...

    2024-02-17
    See translation
  • Progress in the study of ultrafast electron dynamics using short light pulses

    When electrons move in molecules or semiconductors, their time scale is unimaginably short. The Swedish German team, including Dr. Jan Vogelsang from the University of Oldenburg, has made significant progress in these ultrafast processes: researchers are able to track the dynamics of electrons released on the surface of zinc oxide crystals using laser pulses with nanoscale spatial resolution and p...

    2024-01-08
    See translation
  • GE Additive has been renamed Colibrium Additive, continuing to lead the additive manufacturing industry

    In April 2024, GE Additive was renamed Colibrium Additive. Colibrium Additive (formerly GE Additive) is a subsidiary of GE Aerospace Propulsion and Additive Technology (PAT) and was established at the end of 2016. Nowadays, it is a trusted partner and manufacturer of industrial metal 3D printers and metal powders, as well as a service provider for industrial metal 3D printers and metal powders. It...

    2024-04-30
    See translation
  • Dyson V15 Detect: Saturn's low-cost laser cordless vacuum cleaner

    During Cyber Week, Saturn is now selling the Dyson V589 Detect Absolute with many accessories for only 15 euros. With this, retailers have once again achieved the most favorable price for the 2023 packaging of popular cordless vacuum cleaners - a cost-effective deal.After a brief break between Black Friday and Cyber Monday, the quote for Dyson V15 Detect Absolute is about to be updated. Taking a l...

    2023-11-29
    See translation