Archive for the ‘quantum physics’ category

Apr 16, 2024

Internet can achieve quantum speed with light saved as sound

Posted by in categories: internet, quantum physics

Researchers at the University of Copenhagen’s Niels Bohr Institute have developed a new way to create quantum memory: A small drum can store data sent with light in its sonic vibrations, and then forward the data with new light sources when needed again. The results demonstrate that mechanical memory for quantum data could be the strategy that paves the way for an ultra-secure internet with incredible speeds.

Apr 16, 2024

Researchers control quantum properties of 2D materials with tailored light

Posted by in categories: computing, quantum physics

A team of scientists has developed a method that harnesses the structure of light to twist and tweak the properties of quantum materials. Their results, published today in Nature, pave the way for advancements in next generation quantum electronics, quantum computing and information technology.

Apr 16, 2024

Combating disruptive ‘noise’ in quantum communication

Posted by in category: quantum physics

In a significant milestone for quantum communication technology, an experiment has demonstrated how networks can be leveraged to combat disruptive ‘noise’ in quantum communications.

Apr 16, 2024

A magnetic nanographene butterfly poised to advance quantum technologies

Posted by in categories: computing, quantum physics

Researchers from the National University of Singapore (NUS) have developed a new design concept for creating next-generation carbon-based quantum materials, in the form of a tiny magnetic nanographene with a unique butterfly-shape hosting highly correlated spins. This new design has the potential to accelerate the advancement of quantum materials which are pivotal for the development of sophisticated quantum computing technologies poised to revolutionize information processing and high density storage capabilities.

Apr 15, 2024

A balanced quantum Hall resistor provides a new measurement method

Posted by in category: quantum physics

Researchers at the University of Würzburg have developed a method that can improve the performance of quantum resistance standards. It’s based on a quantum phenomenon called Quantum Anomalous Hall effect.

Apr 14, 2024

Semiconductor quantum dots: Technological progress and future challenges

Posted by in categories: chemistry, energy, quantum physics

Quantum #dots feature widely tunable and distinctive optical, electrical, chemical, and physical properties. They span energy #harvesting, #ILLUMINATION, #displays, #cameras, and more.

Read more on #WorldQuantumDay: #Sciencereview.

Semiconductor quantum dots: Technological progress and future challenges.

Apr 14, 2024

Researchers Prove Electrons Move Along “Quantum Paths” in New Study

Posted by in categories: computing, quantum physics

The Quantum Insider (TQI) is the leading online resource dedicated exclusively to Quantum Computing.

Apr 14, 2024

Photonic Quantum Computing: A Promising Future With Mature Technologies And Room-Temperature Operations

Posted by in categories: computing, particle physics, quantum physics

Photonic quantum computation, a type of quantum computation that uses light particles or photons, is divided into two main categories: discrete-variable (DV) and continuous-variable (CV) photonic quantum computation. Both have been realized experimentally and can be combined to overcome individual limitations. Photonic quantum computation is important as it can perform specific computational tasks more efficiently. It has several advantages, including the ability to observe and engineer quantum phenomena at room temperature, maintain coherence, and be engineered using mature technologies. The future of photonic quantum computing looks promising due to the significant progress in photonic technology.

Photonic quantum computation is a type of quantum computation that uses photons, particles of light, as the physical system for performing the computation. Photons are ideal for quantum systems because they operate at room temperature and photonic technologies are relatively mature. The field of photonic quantum computation is divided into two main categories: discrete-variable (DV) and continuous-variable (CV) photonic quantum computation.

In DV photonic quantum computation, quantum information is represented by one or more modal properties, such as polarization, that take on distinct values from a finite set. Quantum information is processed via operations on these modal properties and eventually measured using single photon detectors. On the other hand, in CV photonic quantum computation, quantum information is represented by properties of the electromagnetic field that take on any value in an interval, such as position. The electromagnetic field is transformed via Gaussian and non-Gaussian operations and then detected via homodyne detection.

Apr 14, 2024

Exploring Quantum Teleportation: Qubit Transfer With Exotic Entangled States

Posted by in categories: particle physics, quantum physics

Quantum teleportation is a process by which quantum information can be transmitted from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location. This process is not to be confused with teleportation as depicted in science fiction, where matter is instantaneously transported from one location to another. Instead, quantum teleportation involves the transfer of quantum states between particles at different locations without any physical movement of the particles themselves.

In a recent study by Isiaka Aremua and Laure Gouba, the researchers explored the teleportation of a qubit using exotic entangled coherent states. A qubit, or quantum bit, is the basic unit of quantum information. It is a quantum system that can exist in any superposition of its two basis states. The researchers used a system of an electron moving on a plane in uniform external magnetic and electric fields to construct different classes of coherent states.

Coherent states are specific states of a quantum harmonic oscillator. They are often described as the quantum equivalent of classical states because they closely resemble the behavior of classical particles. In the context of quantum teleportation, coherent states are used to form entangled states, which are crucial for the teleportation process.

Apr 14, 2024

For the first time, Wigner crystal is seen using a quantum device

Posted by in categories: futurism, quantum physics

Physicists at Princeton University successfully visualize the 90-year-old Wigner Crystal theory. This could pave the way for future quantum discoveries.

Page 1 of 72512345678Last