news.buyenne.com

Quantum computers based on ions or atoms have one major advantage: The hardware itself isn’t manufactured, so there’s no device-to-device variability. Every atom is the same and should perform similarly every time. And since the qubits themselves can be moved around, it’s theoretically possible to entangle any atom or ion with any other in the system, allowing for a lot of flexibility in how algorithms and error correction are performed.

This combination of consistent, high-fidelity performance with all-to-all connectivity has led many key demonstrations of quantum computing to be done on trapped-ion hardware. Unfortunately, the hardware has been held back a bit by relatively low qubit counts—a few dozen compared to the hundred or more seen in other technologies. But on Wednesday, a company called Quantinuum announced a new version of its trapped-ion hardware that significantly boosts the qubit count and uses some interesting technology to manage their operation.

Trapped-ion computing

Both neutral atom and trapped-ion computers store their qubits in the spin of the nucleus. That spin is somewhat shielded from the environment by the cloud of electrons around the nucleus, giving these qubits a relatively long coherence time. While neutral atoms are held in place by a network of lasers, trapped ions are manipulated via electromagnetic control based on the ion’s charge. This means that key components of the hardware can be built using standard electronic manufacturing, although lasers are still needed for manipulations and readout.

Read full article

Comments

Die Bundesnetzagentur hat auf Nachfrage eine technische Begründung für ihren Vorstoß nachgeliefert. Telekom und die Standardisierung widersprechen. (Bundesnetzagentur, Telekom)

Die EU-Mitgliedstaaten haben sich auf die Klimaziele für 2040 geeinigt. Dadurch könnte Geld für die Finanzierung der Kaufprämie für E-Autos fehlen. (Energie & Klima, GreenIT)

Flock Safety—the surveillance company behind the country’s largest network of automated license plate readers (ALPRs)—currently faces attacks on multiple fronts seeking to tear down the invasive and error-prone cameras across the US.

This week, two lawmakers, Senator Ron Wyden (D-Ore.) and Representative Raja Krishnamoorthi (D-Ill.), called for a federal investigation, alleging that Flock has been “negligently handling Americans’ personal data” by failing to use cybersecurity best practices. The month prior, Wyden wrote a letter to Flock CEO Garrett Langley, alleging that Flock’s security failures mean that “abuse of Flock cameras is inevitable” and that they threaten to expose billions of people’s harvested data should a catastrophic breach occur.

“In my view, local elected officials can best protect their constituents from the inevitable abuses of Flock cameras by removing Flock from their communities,” Wyden wrote.

Read full article

Comments

Aktuell zahlt man für einen 3er-Pack USB-Ladekabel nur 2,51 Euro pro Kabel bei Amazon. (USB PD, Amazon)