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Nanophysics Aug 23, 2024

New varactor enhances quantum dot device measurements at millikelvin temperatures

The development of quantum computing systems relies on the ability to rapidly and precisely measure these systems' electrical properties, such as their underlying charge and spin states. These measurements are typically collected ...

Optics & Photonics Aug 22, 2024

Developing innovative new display technologies to create ultrahigh-definition screens efficiently

A research team has developed a double-layer dry transfer printing technology that simultaneously transfers light-emitting and electron-transferring layers onto a substrate. This technology is expected to provide a more life-like ...

Optics & Photonics Aug 21, 2024

Researchers observe Floquet states in colloidal nanoplatelets driven by visible pulses

Solution-processed semiconductor nanocrystals are also called colloidal quantum dots (QDs). While the concept of size-dependent quantum effects had long been known to physicists, a sculpture of the theory into real nanodimensional ...

Condensed Matter Aug 15, 2024

Theoretical research holds promise for advancing modular quantum information processing

The operation of a quantum computer relies on encoding and processing information in the form of quantum bits—defined by two states of quantum systems such as electrons and photons. Unlike binary bits used in classical ...

Optics & Photonics Aug 12, 2024

Chip that entangles four photons opens up possibility of inviolable quantum encryption

Unlike classical encryption, which relies on mathematical algorithms, quantum encryption assures security based on physical principles. Detection of espionage or interference is guaranteed by unavoidable alteration of the ...

Materials Science Aug 9, 2024

Powering enzymes with light to make ammonia

The Earth's atmosphere contains large amounts of nitrogen in the form of dinitrogen gas (N2). Converting N2 to ammonia (NH3) is critical for making the fertilizer needed for agriculture.

Optics & Photonics Aug 5, 2024

New light source emits bright, entangled photons for quantum communication

Imagine the possibility of sending messages that are completely impervious to even the most powerful computers. This is the incredible promise of quantum communication, which harnesses the unique properties of light particles ...

Quantum Âé¶¹ÒùÔºics Jul 25, 2024

Somersaulting spin qubits for universal quantum logic could enhance control in larger arrays

Researchers at QuTech developed somersaulting spin qubits for universal quantum logic. This achievement may enable efficient control of large semiconductor qubit arrays. The research group published their demonstration of ...

Bio & Medicine Jul 9, 2024

Moving from the visible to the infrared: Developing high quality nanocrystals

Awarded the 2023 Nobel Prize in Chemistry, quantum dots have a wide variety of applications ranging from displays and LED lights to chemical reaction catalysis and bioimaging. These semiconductor nanocrystals are so small—on ...

Optics & Photonics Jul 9, 2024

Photons from quantum dot emitters violate Bell inequality in new study

A new study in Nature Âé¶¹ÒùÔºics demonstrates a novel method for generating quantum entanglement using a quantum dot, which violates the Bell inequality. This method uses ultra-low power levels and could pave the way for scalable ...

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