Quantum Optics News

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Quantum Dots Increase the Performance of Perovskite Solar Cells

Perovskites are hybrid compounds made from metal halides and organic constituents. They show great potential in a range of applications, e.g. LED lights, lasers, and photodetectors, but their major contribution is in solar cells, where they are poised to overtake the market from their silicon counterparts.

21 Jan 2022

Making High Quality Spin Qubits Based on Chromium Defects in Silicon Carbide

Quantum computers may be able to solve science problems that are impossible for today's fastest conventional supercomputers. Quantum sensors may be able to measure signals that cannot be measured by today's most sensitive sensors. Quantum bits (qubits) are the building blocks for these devices. Scientists are investigating several quantum systems for quantum computing and sensing applications.

17 Jan 2022

Entangled Photons Have an Advantage for Sensing the Smallest Rotations

In the field of quantum metrology, scientists are developing novel measurement schemes that benefit from quantum features and are more precise and sensitive than classical conventional methods.

13 Jan 2022

Study Opens New Avenue for Exploring Gauge Field-Induced Topological Physics

Gauge fields describe the basic interactions between charged particles and are responsible for various emergent topological phases of matter. This concept recently has been further generalized to charge neutral systems by engineering an analog Hamiltonian that governs the effective dynamics of neutral particles subject to magnetic fields.

11 Jan 2022

A Comprehensive Overview of Integrated Quantum Photonics

An international team of leading scientists, headed up by Paderborn physicist Professor Klaus Jöns, has compiled a comprehensive overview of the potential, global outlook, background and frontiers of integrated photonics.

10 Jan 2022

Generating Mono-Cycle Terahertz Pulses from Shift Currents in Asymmetric Quantum Wells

A time-dependent electric current emits an electromagnetic wave, a basic physical effect exploited in telecom antennas. Transferring this mechanism to the ultrashort length and time scales of the quantum world allows for generating intense picosecond terahertz (THz) pulses in asymmetric semiconductor quantum structures.

7 Jan 2022

Optomechanical Quantum Teleportation is an Important Step Toward Hybrid Quantum Internet

Researchers at the Delft University of Technology (TU Delft) in the Netherlands and the University of Campinas (UNICAMP) in Brazil have shown that information encoded in a quantum bit (qubit) consisting of a single photon can be teleported to the mechanical motion of an optomechanical device comprising billions of atoms.

6 Jan 2022

Plasma Lensing Phenomenon identified in a Black Widow Pulsar

A group of scientists identified the plasma lensing phenomenon in a black widow pulsar PSR J1720-0533.

30 Dec 2021

Scientists Record Variations in an Eruption of a Neutron Star

Variations in the brightness of a neutron star—magnetar—during its most violent periods have been recorded for the first time.

29 Dec 2021

Using Quantum Systems for Generating Single Photons

After the "first quantum revolution" – the development of devices such as lasers and the atomic clock – the "second quantum revolution" is currently in full swing. Experts from all over the world are developing fundamentally new technologies based on quantum physics.

22 Dec 2021