Archive for the ‘quantum physics’ category

May 27, 2022

Could the Double-Slit Experiment Finally be Solved?

Posted by in categories: particle physics, quantum physics

The famous double-slit experiment–a now classic showcase of how both light and matter are able to behave as both waves, and particles in their “classical” physical definition–seems almost like magic to many of us.

Because of this unusual function of our physical universe, the double-slit experiment has intrigued physicists for decades, as it suggests the possibility of multiple universes or weird quantum events. However, only recently have researchers at the Vienna University of Technology (TU Wien) found a way to fully validate this experiment, using a particular measurement method on the particle.

May 27, 2022

What if quantum physics could eradicate illness? | Jim Al-Khalili for Big Think

Posted by in categories: biological, evolution, genetics, information science, particle physics, quantum physics

Can quantum science supercharge genetics? | Jim Al-Khalili for Big Think.

This interview is an episode from The Well, our new publication about ideas that inspire a life well-lived, created with the John Templeton Foundation.

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May 27, 2022

Researchers teleport quantum information across rudimentary quantum network

Posted by in categories: computing, internet, quantum physics

Researchers in Delft have succeeded in teleporting quantum information across a rudimentary network. This first of its kind is an important step towards a future quantum internet. This breakthrough was made possible by a greatly improved quantum memory and enhanced quality of the quantum links between the three nodes of the network. The researchers, working at QuTech—a collaboration between Delft University of Technology and the Netherlands Organization for Applied Scientific Research (TNO)—are publishing their findings today in the scientific journal Nature.

The power of a future is based on the ability to send quantum information (quantum bits) between the nodes of the network. This will enable all kinds of applications such as securely sharing confidential information, linking several quantum computers together to increase their computing capability, and the use of highly precise, linked quantum sensors.

May 26, 2022

Error-free quantum computing gets real

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

In modern computers, errors during processing and storage of information have become a rarity due to high-quality fabrication. However, for critical applications, where even single errors can have serious effects, error correction mechanisms based on redundancy of the processed data are still used.

Quantum computers are inherently much more susceptible to disturbances and will thus probably always require error correction mechanisms, because otherwise errors will propagate uncontrolled in the system and information will be lost. Because the fundamental laws of quantum mechanics forbid copying quantum information, redundancy can be achieved by distributing logical quantum information into an entangled state of several physical systems, for example multiple .

The team led by Thomas Monz of the Department of Experimental Physics at the University of Innsbruck and Markus Müller of RWTH Aachen University and Forschungszentrum Jülich in Germany has now succeeded for the first time in realizing a set of computational operations on two logical quantum bits that can be used to implement any possible operation. “For a real-world quantum , we need a universal set of gates with which we can program all algorithms,” explains Lukas Postler, an experimental physicist from Innsbruck.

May 25, 2022

Dutch researchers teleport quantum information across rudimentary quantum network

Posted by in categories: computing, internet, quantum physics

Scientists realize quantum teleportation between remote, non-neighboring nodes in a quantum network. The network employs three optically connected nodes based on solid-state spin qubits. The teleporter is prepared by establishing remote entanglement on the two links, followed by entanglement swapping on the middle node and storage in a memory qubit.

They demonstrate that once successful preparation of the teleporter is heralded, arbitrary qubit states can be teleported with fidelity above the classical bound, even with unit efficiency. These results are enabled by key innovations in the qubit readout procedure, active memory qubit protection during entanglement generation and tailored heralding that reduces remote entanglement infidelities.

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May 25, 2022

A new universal method can solve quantum problems crucial to future computing

Posted by in categories: computing, quantum physics

May 25, 2022

Quantum teleportation expands beyond neighbouring nodes

Posted by in category: quantum physics

Sending quantum information directly from “Alice” to “Charlie” is a step towards a functional multi-node quantum network.

Physicists in the Netherlands have shown for the first time that quantum information can be reliably.

May 25, 2022

Quantum physics offers insights about leadership in the 21st century

Posted by in categories: mapping, neuroscience, quantum physics

According to complexity economist Brian Arthur and physicist Geoffrey West human social systems function optimally as complex adaptive systems – or quantum systems.

The newly developed field of quantum leadership maps the human, conscious equivalents onto the 12 systems that define complex adaptive systems or quantum organisations. These are: self-awareness; vision and value led; spontaneity; holism; field-independence; humility; ability to reframe; asking fundamental questions; celebration of diversity; positive use of adversity; compassion; a sense of vocation (purpose).

Quantum leadership is essentially a new management approach that integrates the most effective attributes of traditional leadership with recent advances in both quantum physics and neuroscience. It is a model that allows for greater responsiveness. It draws on our innate ability to recognise, adapt and respond to uncertainty and complexity.

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May 24, 2022

New kind of camera can image mini-whirlpools in quantum liquids

Posted by in categories: particle physics, quantum physics

Researchers have built a camera-like device for understanding how vortices form in quantum liquids, where atoms pair up and start to behave like overlapping waves.

May 24, 2022

Laser light points toward room-temperature quantum computer

Posted by in categories: computing, quantum physics

Circa 2021

Simple system revealed for controlling the properties of graphene electrons.

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