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Technology
Cryptography Data Encryption data security Indian Security Researchers Quantum communication quantum cryptography Technology

Raman Research Institute’s Breakthrough in Quantum Cybersecurity

 

Scientists at the Raman Research Institute have achieved a significant breakthrough in cybersecurity by developing a novel method for generating truly unpredictable random numbers. This development is essential for strengthening encryption in quantum communications, addressing one of the most pressing challenges in data security today. Traditional encryption methods depend on algorithms and computational complexity to protect data. 
However, with the rise of cyber threats and the imminent advent of quantum computing, there is an increasing demand for more robust and reliable encryption techniques. Quantum computing, in particular, poses a threat to conventional encryption methods as it has the potential to break these systems with ease. Thus, the need for advanced cryptographic solutions has never been more urgent. The team at the Raman Research Institute has created a user-friendly approach to generate random numbers that are genuinely unpredictable. 

This is a critical component for secure encryption because predictable random numbers can compromise the integrity of cryptographic systems. By ensuring that these numbers are entirely random, the new method significantly enhances the security of data transmissions. The unpredictability of these random numbers makes it exponentially harder for potential attackers to predict encryption keys, thereby fortifying data protection. Quantum communication, which relies on the principles of quantum mechanics, offers unparalleled security by making it theoretically impossible for an eavesdropper to intercept and read the transmitted data without being detected. 

However, the effectiveness of quantum communication systems hinges on the quality of the random numbers used in encryption. The breakthrough achieved by the Raman Research Institute addresses this need by providing a reliable source of high-quality random numbers. This advancement not only bolsters current encryption standards but also paves the way for more secure quantum communication networks. 

As cyber threats continue to evolve, the ability to generate truly random numbers will play a crucial role in maintaining the integrity and security of digital communications. This development is particularly significant for industries that rely heavily on data security, such as finance, healthcare, and government sectors. The method developed by the scientists is not only efficient but also practical for real-world applications. It can be integrated into existing systems with minimal modifications, ensuring that organizations can enhance their security measures without significant overhauls. The research team at Raman Research Institute is optimistic that this innovation will set a new standard in cryptographic practices and inspire further advancements in the field. 

The Raman Research Institute’s new method for generating truly unpredictable random numbers marks a significant step forward in cybersecurity. This breakthrough is vital for the development of stronger encryption techniques, particularly in the realm of quantum communications, ensuring that data remains secure in an increasingly digital world. As we move towards more interconnected and data-driven societies, such advancements in cybersecurity are essential to protect sensitive information from sophisticated cyber threats.
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Technology
Communication Encryption Computing Encryption Quantum communication Quantum computing Quantum Technology Secure Data Technology

Quantum Key Distribution Achieves Breakthrough with Semiconductor Quantum Dots

 

In the face of emerging quantum computing threats, traditional encryption methods are becoming increasingly vulnerable. This has spurred the development of quantum key distribution (QKD), a technology that uses the principles of quantum mechanics to secure data transmission. While QKD has seen significant advancements, establishing large-scale networks has been hindered by the limitations of current quantum light sources. However, a recent breakthrough by a team of German scientists may change this landscape. 

The research, published in Light Science and Applications, marks a significant milestone in quantum communication technology. The core of this breakthrough lies in the use of semiconductor quantum dots (QDs), often referred to as artificial atoms. These QDs have shown great potential for generating quantum light, which is crucial for quantum information technologies. In their experiment, the researchers connected Hannover and Braunschweig via an optical fiber network, a setup they called the “Niedersachsen Quantum Link.” This intercity experiment involved a fiber optic cable approximately 79 kilometers long that linked the Leibniz University of Hannover and Physikalisch-Technische Bundesanstalt Braunschweig. Alice, located at LUH, prepared single photons encrypted in polarization. Bob, stationed at PTB, used a passive polarization decoder to decrypt the polarization states of the received photons. 

This setup represents the first quantum communication link in Lower Saxony, Germany. The team achieved stable and rapid transmission of secret keys, demonstrating that positive secret key rates (SKRs) are feasible for distances up to 144 kilometers, corresponding to a 28.11 dB loss in the laboratory. They ensured a high-rate secret key transmission with a low quantum bit error ratio (QBER) for 35 hours based on this deployed fiber link. Dr. Jingzhong Yang, the first author of the study, highlighted that their achieved SKR surpasses all current single-photon source (SPS) based implementations. Even without further optimization, their results approach the levels attained by established decoy state QKD protocols using weak coherent pulses. Beyond QKD, quantum dots offer significant potential for other quantum internet applications, such as quantum repeaters and distributed quantum sensing. These applications benefit from the inherent ability of QDs to store quantum information and emit photonic cluster states. This work underscores the feasibility of integrating semiconductor single-photon sources into large-scale, high-capacity quantum communication networks. 

Quantum communication leverages the quantum characteristics of light to ensure messages cannot be intercepted. “Quantum dot devices emit single photons, which we control and send to Braunschweig for measurement. This process is fundamental to quantum key distribution,” explained Professor Ding. He expressed excitement about the collaborative effort’s outcome, noting, “Some years ago, we only dreamt of using quantum dots in real-world quantum communication scenarios. Today, we are thrilled to demonstrate their potential for many more fascinating experiments and applications in the future, moving towards a ‘quantum internet.’” 

The advancement of QKD with semiconductor quantum dots represents a major step forward in the quest for secure communication in the age of quantum computing. This breakthrough holds promise for more robust and expansive quantum networks, ensuring the confidentiality and security of sensitive information against the evolving landscape of cyber threats. 

As the world continues to advance towards more interconnected digital environments, the necessity for secure communication becomes ever more critical. The pioneering work of these scientists not only showcases the potential of QKD but also paves the way for future innovations in quantum communication and beyond.
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Technology
Quantum communication Russia Technology

The first commercial quantum communication line to be built in Russia


The national program in Russia plans to improve the information security of both government agencies and private companies. Experts want to achieve this by creating the first commercial quantum network in the country. It will provide the most reliable degree of information security available today. Data centers in Russia will establish a quantum communication line between them by 2021.

It is known that experts will build a network 670 km long between data centers located in Moscow and Udoml. They have powerful servers and network equipment designed to process, store and distribute information. Currently, the communication channels leading to the centers are protected by crypto-algorithms, the disadvantage of which is the existence of a key that is stored on the physical medium. So, having a key, fraudsters can intercept and decrypt the transmitted information.

To date, the only way to solve this problem is to use quantum communications. It is a data exchange technology that is protected by the quantum distribution of encryption keys. The hacker will not be able to intercept such a key, remaining unnoticed. Photons are used as carriers of transmitted information.

"If a hacker starts copying the state of a particle, its properties will instantly change. Thus, copying data will fail. Moreover, if someone tries to intercept the media during their transmission, the user of the system will know about it," said specialists.

Since the photons change their state after 140 km due to scattering, the developers plan to build six protected intermediate nodes on the 670 km line.

The project of the quantum communication line was named Landau, and Rostelecom was appointed responsible for its implementation. The project will be launched this year. It is expected that by the end of 2020 there will be a prototype of the service, and the project will be ready in 2021. The work is carried out as part of the national program "Digital Economy". It is known that in case of successful completion of the project, no one will be able to hack into computers, which will be great news for databases of large state corporations and banks.

As a reminder, the Russian Government approved the national program "Digital economy" and allocated 1 trillion rubles (217 billion $) from the Federal budget for the implementation of the presidential task.
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