Archive for the ‘quantum physics’ category

Jul 24, 2021

Why AI will be so core to real-world quantum computing

Posted by in categories: business, quantum physics, robotics/AI

Be it large enterprises or small medium-sized businesses, Quantum Computing and Artificial Intelligence (AI) are two of the biggest buzzwords in IT today.

Jul 23, 2021

Quantum network is step towards ultrasecure internet

Posted by in categories: internet, quantum physics

Experiment connects three devices with entangled photons, demonstrating a key technique that could enable a future quantum internet. Experiment demonstrates a key technique that could enable a future quantum internet.

Jul 23, 2021

Physicists Show That a Quantum Particle Made of Light and Matter Can Be Dragged by a Current of Electrons

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

A pair of studies in Nature show that a quasiparticle, known as a plasmon polariton, can be pulled with and against a flow of electrons, a finding that could lead to more efficient ways of manipulating light at the nanoscale.

Jul 23, 2021

Quantum biology

Posted by in categories: biological, quantum physics

Circa 2012

Could biological systems have evolved to find the optimal quantum solutions to the problems thrown at them by nature? This Review presents an overview of the possible quantum effects seen in photosynthesis, avian magnetoreception and several other biological systems.

Jul 23, 2021

Can consciousness be explained by quantum physics? Research is closer to finding out

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

One of the most important open questions in science is how our consciousness is established. In the 1990s, long before winning the 2020 Nobel Prize in Physics for his prediction of black holes, physicist Roger Penrose teamed up with anaesthesiologist Stuart Hameroff to propose an ambitious answer.

They claimed that the brain’s neuronal system forms an intricate network and that the consciousness this produces should obey the rules of quantum mechanics —the theory that determines how tiny particles like electrons move around. This, they argue, could explain the mysterious complexity of human consciousness.

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Jul 22, 2021

100-Qubit Quantum Computing System Unveiled

Posted by in categories: computing, quantum physics

Startup reveals a unique quantum computing system.

Quantum computing startup claims it has a 100-qubit quantum computing system.

Jul 21, 2021

‘Magic-angle’ trilayer graphene may be a rare, magnet-proof superconductor

Posted by in categories: biotech/medical, computing, quantum physics

MIT physicists have observed signs of a rare type of superconductivity in a material called magic-angle twisted trilayer graphene. In a study appearing in Nature, the researchers report that the material exhibits superconductivity at surprisingly high magnetic fields of up to 10 Tesla, which is three times higher than what the material is predicted to endure if it were a conventional superconductor.

The results strongly imply that magic-angle trilayer graphene, which was initially discovered by the same group, is a very rare type of superconductor, known as a “spin-triplet,” that is impervious to high magnetic fields. Such exotic superconductors could vastly improve technologies such as imaging, which uses superconducting wires under a to resonate with and image biological tissue. MRI machines are currently limited to magnet fields of 1 to 3 Tesla. If they could be built with spin-triplet superconductors, MRI could operate under higher magnetic fields to produce sharper, deeper images of the human body.

The new evidence of spin-triplet superconductivity in trilayer graphene could also help scientists design stronger superconductors for practical quantum computing.

Jul 21, 2021

Will we ever be able to teleport?

Posted by in category: quantum physics

Is teleportation possible? Oddly enough, thanks to quantum mechanics, the answer might actually be yes… sort of!

Jul 20, 2021

Quantum Milestone: We Can Now Detect and Correct Quantum Errors in Real Time

Posted by in categories: computing, quantum physics

Researchers at Honeywell Quantum Solutions have taken a significant step toward demonstrating the viability of large-scale quantum computing on its trapped-ion quantum computing technology.

The Honeywell team can now perform quantum error correction (QEC), which are protocols necessary to detect and correct errors in real time on a quantum computer. They demonstrated the ability to “protect” quantum information (prevent a quantum computation from being quickly corrupted by imperfections and noise) on the System Model H1. This is an important first in the quantum computing industry. Currently, most demonstrations of quantum error correction involve correcting errors or “noise” after the procedure has finished running, a technique known as post-processing.

In a paper published this week on arXiv, researchers detailed how they created a single logical qubit (a series of entangled physical qubits) and applied multiple rounds of quantum error correction. This logical qubit is protected from two main types of errors that occur in a quantum computer: bit flips and phase flips.

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Jul 20, 2021

High-power portable terahertz laser systems

Posted by in category: quantum physics

Circa 2020

GaAs-based terahertz quantum cascade lasers emitting around 4 THz are demonstrated up to 250 K without a magnetic field. To elevate the operation temperature, carrier leakage channels are reduced by carefully designing the quantum well structures.

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