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    A Revolutionary Breakthrough in Encryption: Quantum Random Number Generator

    BySam Figg

    Nov 14, 2023
    A Revolutionary Breakthrough in Encryption: Quantum Random Number Generator


    Digital information exchange has become an integral part of our lives, but the security of this information remains a critical concern. With the advent of a groundbreaking technology, a new era of encryption has dawned. Scientists at Linköping University have successfully developed a quantum random number generator (QRNG) that promises to revolutionize encryption, making digital communication safer, more affordable, and environmentally friendly.

    The Role of Encryption

    Encryption is the primary method used to protect sensitive information during digital transactions. Whether it is sending emails, conducting financial transactions, or shopping online, encryption plays a vital role in ensuring the privacy and security of data. A key component of encryption is a random number generator, which generates unique keys used for both encrypting and decrypting information. The level of randomness provided by the random number generator determines the security of the encryption.

    The Birth of Quantum Random Number Generators

    Quantum Random Number Generators (QRNGs) present a major leap forward in encryption technology. Hardware-based QRNGs rely on quantum phenomena and physical processes to generate true randomness. Unlike computer programs, hardware-based QRNGs offer a superior level of randomness and, consequently, enhanced security. QRNGs provide certified private key generation, making them virtually impenetrable. If the laws of quantum physics hold true, any attempt to eavesdrop on encrypted communications would be immediately detected by the recipient.

    A New Breakthrough: Perovskite-based QRNG

    Researchers at Linköping University have taken QRNG technology to new heights by developing a novel type of QRNG based on perovskite light emitting diodes (PeLEDs). These PeLEDs offer exceptional properties that make the generated random numbers among the best in the field. The crystal-like material used in these PeLEDs not only ensures high randomness but also has the potential to reduce costs and minimize environmental impact.

    The Revolution in Optical Instruments

    Beyond encryption, the usage of perovskite-based LEDs has the potential to revolutionize various industries, particularly optical instruments. Traditional lasers could be replaced with PeLEDs, resulting in cost-effective solutions for QRNG implementation in consumer electronics. Furthermore, PeLEDs consume less energy, making them highly efficient and sustainable.

    The Road Ahead

    As scientists continue to explore the possibilities of perovskite materials, the researchers at Linköping University are determined to enhance the performance and lifetime of their QRNG. Efforts to develop lead-free perovskite materials and prolong the operational lifespan are already underway. In just five years, the cutting-edge QRNG technology developed by the Linköping researchers may be readily available for implementation in cybersecurity applications.


    1. What is encryption, and why is it important?
    2. Encryption is the process of converting information into a code to prevent unauthorized access. It ensures the security and privacy of sensitive data during digital transactions.

    3. What is a Quantum Random Number Generator (QRNG)?
    4. A QRNG is a hardware-based random number generator that utilizes quantum phenomena to generate truly random numbers, enhancing the security of encryption.

    5. Why are Perovskite-based LEDs significant?
    6. Perovskite-based LEDs offer exceptional properties that result in high randomness and improved encryption security. They also have the potential to reduce costs and energy consumption.

    7. How will the development of QRNG impact optical instruments?
    8. The usage of PeLEDs in QRNG implementation has the potential to revolutionize optical instruments by offering cost-effective and energy-efficient solutions.

    9. When will the Linköping University QRNG technology be available for cybersecurity?
    10. Researchers anticipate that their advanced QRNG technology could be incorporated into cybersecurity applications within the next five years.

    *This article is based on research conducted at Linköping University (https://liu.se/)*.