Articles tagged with Quantum Information
Researchers at University of Copenhagen have developed a new quantum circuit that can operate and measure all four qubits simultaneously. This breakthrough resolves a significant engineering headache in the development of large functional quantum computers.
Experts successfully connect quantum computers and sensors on a practical scale, enabling entanglement-based quantum communications. The team demonstrated scalability of entanglement-based protocols across three remote nodes using flexible grid bandwidth provisioning.
Physicists have developed a new method to identify and address imperfections in materials for quantum computing. The technique, terahertz scanning near-field optical microscopy, has been used to optimize fabrication protocols and reduce decoherence.
Researchers found that spin-orbit coupling induces asymmetric interactions between electrons in chromium triiodide, affecting its topological excitations. This discovery could exist in other 2D van der Waals magnets and has implications for spintronics.
Scientists detected electronic and optical interlayer resonances in bilayer graphene by twisting one layer 30 degrees, resulting in increased interlayer spacing that influences electron motion. This understanding could inform the design of future quantum technologies for more powerful computing and secure communication.
Quantum engineers at the University of New South Wales have discovered a new technique to control millions of spin qubits, a critical step towards building a practical quantum computer. This breakthrough uses a novel component called a dielectric resonator to focus microwave power and deliver uniform magnetic fields across the chip.
Researchers from USTC extended optical memory storage time to over one hour using ZEFOZ-AFC method and dynamical decoupling, achieving high storage capacity and fidelity. The study meets basic requirements for optical storage lifetime in quantum memories.
Porphyrin molecules have electrical and optical properties that can be tailored for molecular-based materials and quantum information technologies. Researchers will develop a comprehensive database for porphyrins and metal-porphyrins with experimental and theoretical values, including response functions and conductance curves.
Researchers have created microfabricated elastic diamonds that can stretch up to 10% without losing their shape. This controlled elasticity changes the diamond's electronic properties, including a reduced bandgap, making it suitable for advanced electronics and quantum information technologies.
Research reveals that quantum particles can break a key principle of classical physics when passing through gravitational waves, opening up new possibilities for advanced materials and devices. This finding has significant implications for the development of gravitational wave detectors and potential energy harvesting technologies.
Researchers from JMU have successfully demonstrated the existence of spin centers in boron nitride crystals, exhibiting magnetic dipole moments and optical properties. This discovery paves the way for developing artificial two-dimensional crystals with tailored properties.
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.
Researchers at the University of Bonn have successfully applied the Purcell effect to improve the transmission of quantum information. By forcing photons onto a specific path using the Purcell effect, they achieved a significant increase in efficiency, enabling faster communication between quantum dots and transmitters.
Scientists have successfully achieved strong coupling between distant phonon modes of graphene-based mechanical resonators using a phonon cavity mode. By tuning the resonant frequency of the phonon cavity mode, they can continuously tune the coupling strength between distant phonon modes.
The researchers created a device called a quantum enigma machine that can transmit an unbreakable encrypted message using a key significantly shorter than the message, advancing the field of quantum data locking. The team successfully demonstrated six bits of classical information being securely locked in with only one bit of encryptio...
Researchers from ITMO University have developed a novel approach to constructing quantum communication systems, enabling the transmission of single-photon quantum signals across distances of up to 250 kilometers. The system uses side frequencies to simplify device architecture and increase pass-through capacity, making it comparable to...
A team of physicists at Australian National University has improved storage time by a factor of over 100, achieving a record six-hour storage time. This breakthrough is expected to revolutionize the transmission of quantum information and enable the creation of a secure worldwide data encryption network.
Physicist Chris Adami has solved the information paradox in Hawking's black hole theory by introducing the concept of stimulated emission. According to Adami, the information swallowed by a black hole is copied and preserved outside the event horizon through stimulated emission.
A University of Calgary research team has developed a new approach to enhance quantum-based secure communication systems, overcoming a major vulnerability that threatened the security of QKD-secured networks. The new protocol allows for secure key distribution over long distances without compromising secrecy.
Researchers Corsin Pfister and Stephanie Wehner discovered a new principle that rules out discrete theories incompatible with quantum physics. The principle assumes that measuring a system yields no information implies the system has not been disturbed.