Articles tagged with Quantum Cryptography
A team of NUS researchers has developed a self-testing quantum chip that generates certified random numbers while verifying its own measurement hardware's functionality. The chip, published in PRX Quantum, removes the trust assumption in traditional random number generators.
Researchers at Bar-Ilan University have developed a novel method to send, manipulate and measure quantum information across many frequency channels simultaneously, enabling faster and more efficient secure communication technologies.
Researchers propose a new approach to secure optical communication by hiding information in the physical structure of light, making it difficult for unauthorized parties to intercept or decode. Computer simulations showed that the method can transmit information reliably without revealing it through changes in beam size or intensity.
The Rijndael algorithm, created by Daemen and Rijmen in 1997, has become the international standard for encrypting data, safeguarding websites, laptops, mobile phones, and more. Its security has withstood 25 years of attacks, making it a crucial backbone of trust in the digital world.
Dr. Marlan Scully traces the journey of quantum mechanics, from its quirky beginnings to its role in solving science's toughest challenges, including quantum computing, cryptography, and gravitational wave detection.
A new quantum-secured data transmission architecture has been proposed to address the challenges of AI-driven data centers. The system achieves terabit-per-second capacity while defending against future quantum threats through self-homodyne coherent transmission and integrated quantum key distribution.
The researchers have successfully demonstrated a four-dimensional QKD system with high efficiency and low measurement error rates. This breakthrough enables secure data transmission over long distances, with potential applications in fields such as finance and government.
Researchers developed a chip-based quantum random number generator that generates unpredictable numbers at 3 gigabits per second, fast enough to support large-scale data centers' security needs. The device overcomes challenges of noise interference with an optical amplifier and dual-photodiode design.
Researchers propose a quality management system for quantum technologies to ensure security, interoperability, transparency and accountability. International standards can facilitate cooperation among countries like China, the US, and Europe, creating trust in new technologies.
Researchers at Kyoto University have characterized quantum advantage by proving an equivalence between its existence and the security of certain cryptographic primitives. This breakthrough implies that when quantum advantage does not exist, many conventional cryptographic primitives are broken, including post-quantum ones.
Researchers propose a discrete-modulated coherent-state quantum key distribution scheme with basis-encoding, reducing post-processing complexity and improving reconciliation efficiency. Experimental results show significant enhancements in tolerating channel loss, achieving a key rate of 13.12 kbps under 11 dB of channel loss.
A national pilot program led by UTA faculty is helping take the mystery out of quantum physics for students and educators. The program, Quantum for All, provides hands-on curriculum and classroom strategies to equip high school science teachers with the tools they need to teach quantum science.
A new quantum random number generator has been developed, surpassing existing generators in speed and size. This breakthrough could significantly impact industries relying on strong data security, including health, finance, and defense.
A team of researchers from JPMorganChase, Quantinuum, and the University of Texas at Austin have successfully demonstrated certified randomness using a 56-qubit quantum computer. This achievement has significant implications for cryptography, fairness, and privacy, as it enables the generation of truly random numbers that cannot be man...
The first draft of Italy's National Strategy for Quantum Technologies is available online for public consultation. The strategy aims to strengthen the country's position in quantum technologies, with contributions from research experts and stakeholders.
Researchers developed Concurrent Dynamic Quantum Logic (CDQL) to verify quantum protocols with concurrent actions, enhancing expressiveness and speeding up verification. CDQL provides a rigorous framework for verifying both sequential and concurrent models of quantum protocols.
Researchers from Linköping University confirmed a direct connection between quantum theory and information theory, revealing the degree of unknown information in a quantum system. The study used a new experimental setup to demonstrate the equivalence of entropic uncertainty with wave-particle duality.
Researchers at NCSA have presented a novel post-quantum cryptography network instrument to measure PQC adoption rates and ensure secure data safeguarding. The project's findings indicate that only OpenSSH and Google Chrome have successfully implemented PQC, achieving an initial adoption rate of 0.029%.
MIT researchers have proposed a best-of-both-worlds approach to improve the speed of a 1994 quantum factoring algorithm while reducing memory requirements. The new algorithm is faster, requires fewer qubits, and has a higher tolerance to quantum noise.
Researchers at the University of Bath have created new specialty optical fibers to cope with the challenges of future quantum computing. These fibers feature a micro-structured core that allows for improved data transfer and the creation of entangled photons, enabling quantum computation.
Researchers are developing a satellite-based quantum light source for secure communication, leveraging the laws of physics to encode and transmit data. The technology has the potential to extend quantum cryptography over long distances, enabling secure communications between cities or continents.
Researchers from Hebrew University of Jerusalem have successfully integrated single-photon sources onto tiny chips at room temperature using a hybrid metal-dielectric bullseye antenna. This innovation enables efficient back-excitation and front coupling of emission to optical fibers or low numerical aperture optics, promising advanceme...
A team in China has developed a cost-effective cloud storage solution that uses quantum key distribution and Shamir's secret sharing algorithm to provide quantum security and fault tolerance. The method disperses keys via the algorithm, applies erasure coding, and securely transmits data through QKD-protected networks.
Researchers at Linköping University develop a new type of quantum random number generator based on perovskite light emitting diodes, providing improved randomness and security. The technology has the potential to be cheaper and more environmentally friendly than traditional methods.
Researchers at Paderborn University have developed a multi-output quantum pulse gate (mQPG) that enables the decoding of information encoded in photons' color composition. This technology improves the security and efficiency of quantum key distribution protocols.
Researchers at the University of Innsbruck have developed reversible parity gates for integer factorization using quantum computers. This breakthrough enables the solution of a crucial pillar of cryptography, allowing for faster and more efficient factorization.
Researchers developed an all-optical quantum state sharing protocol that uses continuous variable systems to share secret information between multiple parties. The new method successfully implemented in a low-noise amplifier and demonstrated higher average fidelity than classical limits.
Scientists have found that manipulating entanglement in quantum systems is inherently irreversible, ruling out the possibility of a second law. This means that entanglement entropy cannot fully recover invested entanglement, making it impossible to transform states back and forth.
Researchers at Penn Engineering have created a chip that outstrips existing quantum communications hardware, communicating in qudits and doubling the quantum information space. The technology enables significant advances in quantum cryptography, raising the maximum secure key rate for information exchange.
Researchers demonstrate device-independent quantum key distribution using quantum entanglement, paving the way for secure communication. The breakthrough ensures security without relying on the eavesdropper's computational power.
Researchers discovered a novel connection between superposition and entanglement that goes beyond quantum theory, applicable to more exotic theories. This equivalence has practical implications for ultra-secure encryption, including popular protocols like BB84.
Researchers at the University of Copenhagen have developed a new position-based quantum encryption method that uses a person's geographical location to guarantee secure communication. This method makes it difficult for hackers to impersonate users and exploit online communications.
A UNIGE team has successfully stored a quantum bit for 20 milliseconds in a crystal-based memory. This achievement marks a major step towards the development of long-distance quantum telecommunications networks.
A team of researchers from Ritsumeikan University developed an unprecedented stream cipher using chaos theory to create highly secure cryptographic systems. The new system is resistant to statistical attacks and eavesdropping, even against quantum computers, making it a promising solution for post-quantum era cryptosystems.
Researchers at INRIM demonstrate a novel method for enhancing long-distance quantum key distribution by leveraging coherent laser interferometry, single-photon technologies, and quantum metrology. This breakthrough enables lower error rates and increased message length, paving the way for more efficient QKD protocols.
A team of researchers has developed a simple and efficient method of quantum encryption using single photons, which can detect any attempt to hack the message. The breakthrough brings us closer to securing our data against quantum computers' potential attacks.
Researchers have developed a superconducting silicon-photonic chip for quantum communication, enabling optimal Bell-state measurement of time-bin encoded qubits. This breakthrough enhances the key rate of secure quantum communication and removes detector side-channel attacks, significantly increasing security.
Researchers from Oak Ridge National Laboratory have developed innovative technologies in self-healing sealants, precision deicers and quantum-enabled grid security. These breakthroughs aim to improve construction materials, reduce waste in road maintenance and enhance power grid protection.
Toshiba has developed the world's first chip-based quantum key distribution (QKD) system, enabling mass manufacture of quantum security technology. This advancement will bring quantum cryptography to a wider range of scenarios, including IoT solutions.
Researchers found that quantum mechanics' influence on particles affects light emission, demonstrating wavefunction collapse and altering interference patterns. The study sheds new light on the counter-intuitive phenomenon, revealing a direct connection between light emission and quantum entanglement.
A team at TU Wien developed a new quantum transmission protocol using eight different paths for each photon, generating a record-breaking entanglement-based quantum key. This protocol is more robust against interference and allows for faster data transmission.
Researchers at Louisiana State University have developed a nanoscale system that can create different forms of light by manipulating photon distribution. This breakthrough has significant implications for quantum technologies and may lead to more efficient solar cells.
Researchers from NUS have developed two methods to ensure QKD communications cannot be attacked using side-channel attacks. The first is an ultra-secure cryptography protocol that can be deployed in any communication network, and the second is a device that defends against bright light pulse attacks by creating a power threshold.
A field trial demonstrates a stable and efficient quantum key distribution (QKD) system that can generate quantum-secure cryptographic keys at sustained rates over a standard telecommunications infrastructure. The system, developed by researchers in Italy, is designed to be easy-to-operate and integrate into existing optical networks.
Researchers at Heriot-Watt University have demonstrated the first quantum-secure conversation between four parties simultaneously, using Quantum Key Distribution and multi-party entanglement to share keys securely. This breakthrough has potential to drastically reduce resource costs for conference calls in quantum networks.
Archana Kamal, a physics professor at UMass Lowell, has received over $1 million in funding from the NSF and Air Force for her research on quantum information processing. Her project aims to develop self-correcting qubits using quantum reservoir engineering to address decoherence issues.
Researchers from Louisiana State University demonstrated a machine learning approach that corrects distorted quantum information in photon systems. This method outperforms traditional protocols, showcasing the potential for machine learning to enhance quantum sensing and communications technologies on the battlefield.
Researchers from Louisiana State University have developed a smart quantum technology to correct distorted spatial modes of light at the single-photon level using artificial neural networks. This technique boosts channel capacity in optical communication protocols, enabling secure communication and enhancing sensing capabilities.
Researchers have created a photon source that can produce billions of single photons per second, significantly increasing efficiency over previous systems. This breakthrough has significant consequences for quantum cryptography and computing, with potential applications in secure communications and quantum computing.
Researchers from Aalto University have successfully entangled pairs of electrons using temperature differences in superconducting structures. This breakthrough has significant implications for quantum devices and applications, including exponential increases in computational capacity and secure information exchange.
Researchers at Helmholtz-Zentrum Dresden-Rossendorf have designed a silicon-based light source to generate single photons, a crucial component for quantum cryptography and communication. The prototype can produce 100,000 single photons per second and is stable even after several days of continuous operation.
Researchers demonstrated optical polarization and reading of electronic spin color centers in boron nitride. The study proposes a microscopic model of the center, a boron vacancy in a negative charge state, and shows potential for vander Waals materials in atomic-scale quantum technologies.
A team of researchers from Brown University and Dartmouth College will use a novel approach to study quantum materials and complex quantum states. They aim to design new materials whose properties depend on correlated quantum states, which could lead to error-tolerant quantum computers.
Researchers have successfully transmitted light through a two-dimensional molybdenum diselenide crystal, only one atom thick. The distribution of light polarization in space turned out to be similar to the three-colored rapana, with unique effects of spin-orbit interaction in the crystal.
A new study from ANU found that 2D materials can thrive in harsh space conditions, with one material even improving its properties after exposure to intense gamma radiation. This could lead to the development of lighter and more efficient solar cells, satellite electronics, and quantum light sources.
The discovery represents a powerful mechanism for quantum computing and cryptography. Researchers developed an exponential-SWAP gate that can link encoded particles on demand, mitigating the limitation of previous designs and enabling flexible operations.
Researchers have created a new breed of devices with unique properties, harnessing the power of quantum interference to fine-tune electrical conductance. By controlling quantum strangeness, they demonstrated that electrical conductance can be modulated over two orders of magnitude in single molecules.
Researchers at Kazan Federal University developed cryptographic algorithms for quantum networks, which can facilitate fast and secure information transfer. The algorithms, known as quantum hash functions, can protect against mistakes and be used for authentication in various areas.
ETRI's QKD system achieves secure key rate of 142.94 kbps in daylight, demonstrating its potential for secure communication in various applications. The self-developed polarization encoding chip reduces the system size and paves the way for commercialization.
The CiViQ project aims to develop flexible and low-cost quantum key distribution (QKD) systems that can be integrated into emerging telecommunication infrastructures. The project will also put forward novel quantum cryptography systems and protocols to offer accessible innovative services to individuals, industries, and institutions.