Researchers have built what they believe is 'the world's most efficient single-photon source.' And they are still improving it. With planned upgrades, the apparatus could generate upwards of 30 photons at unprecedented efficiencies. Sources of that caliber are precisely what's needed for optical quantum information applications.
Read moreMetal complexes show a fascinating behavior in their interactions with light, which for example is utilized in organic light emitting diodes, solar cells, quantum computers, or even in cancer therapy. In many of these applications, the electron spin, a kind of inherent rotation of the electrons, plays an important role. Researchers succeeded in simulating the extremely fast spin flip processes that are triggered by the light absorption of metal complexes.
Read moreUser-based framing is generally better than item-based framing at generating click-throughs, but there are specific situations in which user-based framing is no longer advantageous or even becomes disadvantageous.
Read moreA research team has invented a semiconductor quantum well system that can efficiently cool electronic devices using established fabrication methods. This work can allow for smaller and faster smart devices that consume less power.
Read moreResearchers have made a discovery that could provide new insights into how superconductors might move energy more efficiently to power homes, industries and vehicles. Their work showed that graphene — a material composed of a single layer of carbon atoms — is more likely to become a superconductor than originally thought possible.
Read moreResearchers have created a silicon carbide (SiC) photonic integrated chip that can be thermally tuned by applying an electric signal. The approach could one day be used to create a large range of reconfigurable devices such as phase-shifters and tunable optical couplers needed for networking applications and quantum information processing.
Read moreTopological insulators are quantum materials, which, due to their exotic electronic structure, on surfaces and edges conduct electric current like metal, while acting as an insulator in bulk. Scientists have now demonstrated how to tell apart topological materials from their regular — trivial — counterparts within a millionth of a billionth of a second by probing it with ultra-fast laser light.
Read moreThe quantum superposition principle has been tested on a scale as never before in a new study. Hot, complex molecules composed of nearly two thousand atoms were brought into a quantum superposition and made to interfere. By confirming this phenomenon — 'the heart of quantum mechanics', in Richard Feynman's words — on a new mass scale, improved constraints on alternative theories to quantum mechanics have been placed.
Read morePhysicists have found a way to measure the elusive quantum phase of electrons. This enables a new, better view of important phenomena used in photosensors or photovoltaics.
Read morePhysicists have created a quantum material that can travel through a previously unexplored region marked by strange electronic properties. The journey is by an alloy of cerium palladium and aluminum.
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