Light-based quantum technologies, such as quantum communication and photonic quantum computing, require reliable sources of ...

A research team in China has built a quantum dot device that produces photon pairs with record-setting purity, achieving a two-photon fraction of 0.983(1). The work, published in Nature Materials, ...

Over the past decade, researchers have become good at creating devices that emit single ...

Researchers decoded the synthesis mechanism of heavy-metal-free CuInS2 quantum dots and built a photoelectrochemical device ...

Optical feedback from on-chip components fundamentally limits stable laser operation in photonic integrated circuits. In a ...

The demonstration marks an important step toward practical quantum communication networks. During the experiment, researchers ...

(Nanowerk News) Researchers have successfully created electrically defined quantum dots in zinc oxide (ZnO) heterostructures, marking a significant milestone in the development of quantum technologies ...

Accurate alignment of quantum dots with photonic components is critical for extracting the radiation emitted by the dots. In this illustration, a quantum dot centered in the optical "hotspot" of a ...

Quantum dots, semiconductor nanostructures exhibiting discrete energy levels, have emerged as quintessential quantum emitters for on‐demand single-photon generation. Their unique confinement ...

Such alignment is critical for chip-scale devices that employ the radiation emitted by quantum dots to store and transmit quantum information. For the first time, the NIST researchers achieved this ...

The structure of the zinc oxide (ZnO) device. A two-dimensional electron gas (2DEG) forms at the (Mg, Zn)O/ZnO interface. By applying voltages to the gate electrodes, we can confine electrons in a ...