Quantum dots and quantum wells represent pivotal semiconductor nanostructures whose quantum confinement effects yield discrete energy spectra and highly tunable optical and electronic properties.

Researchers have designed a new device that can efficiently create multiple frequency-entangled photons, a feat that cannot be achieved with today's optical devices. The new approach could open a path ...

An international research team involving Paderborn University has achieved a crucial breakthrough on the road to a quantum internet. For the first time ever, the polarization state of a single photon ...

One of the biggest hurdles in building quantum networks is showing that quantum information can be transferred between devices that are not inherently compatible. But one Europe-wide research ...

When light hits solar cells, so-called electron-hole pairs are created: the electrons are excited and can move almost freely in the material—i.e. to generate electricity. The electrons will leave ...

Quantum Cryptography with quantum dot based compact and high rate single photon nano-devices. Credit: Lars Luder Physicists have developed a breakthrough concept in quantum encryption that makes ...

Using quantum states for processing information has the potential to swiftly address complex problems that are beyond the reach of classical computers. Over the past decades, tremendous progress has ...

Everyday life on the internet is insecure. Hackers can break into bank accounts or steal digital identities. Driven by AI, attacks are becoming increasingly sophisticated. Quantum cryptography ...

Argonne National Laboratory announced it has successfully deployed and is running a 12-qubit quantum dot device built by Intel, with the first collaborative work published in Nature Communications.