New method improves stability of perovskite quantum dots

Scientists have built a new type of inorganic nanocomposite that makes perovskite quantum dot exceptionally stable against air exposure, sunlight, heat, and water.

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Toward mass-producible quantum computers

Mass-producible quantum computers are closer than ever, thanks to new research. This process for positioning quantum bits in diamond optical circuits could work at large scales, say scientists.

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Journey to the Birth of the Solar System

Join David Kaplan on a virtual-reality tour showing how the sun, the Earth and the other planets came to be. …

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Unveiling the quantum necklace

The quantum world is both elegant and mysterious. It is a sphere of existence where the laws of physics experienced in everyday life are broken — particles can exist in two places at once, they can react to each other over vast distances, and they themselves seem confused over whether they are particles or waves. For those not involved in the field, this world may seem trifling, but recently, researchers have theoretically described two quantum states that are extraordinary in both the physics that define them and their visual appeal: a complex quantum system that simulates classical physics and a spellbinding necklace-like state.

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Parity-preserving light-matter system mediates effective two-body interactions

We study the equilibrium and non-equilibrium physics of two qubits interacting through an ultrastrong coupled qubit-cavity system. By tuning the qubits energy gap while keeping the ultrastrong coupling system to its ground state, we demonstrate a strong two-qubit interaction as well as an enhanced excitation transfer between the two qubits. Our proposal has twofold implications: a means to attain multipurpose parity-protected quantum information tasks in superconducting circuits and a building block for ultrastrong coupled cavity-enhanced exciton transport in disordered media. …

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Measured for the first time: Direction of light waves changed by quantum effect

Certain materials can be used to rotate the direction in which the light is oscillating. This is known as a ‘magneto-optical’ effect. One variant of this type of effect has now been demonstrated for the first time. Rather than switching the direction of the light wave continually, special materials called ‘topological insulators’ do so in quantum steps. This could give us a new method to measure fundamental constants of nature.

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Awash in Sea of Data, Ecologists Turn to Open Access Tools

To assess the ocean’s health, ecology’s “rugged individualists” learned to get with the big data program. …

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The Mathematics of Juggling

Juggling has advanced enormously in recent decades, thanks in part to the mathematical study of possible patterns. …

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