MAROKO133 Hot ai: Two OpenAI Execs, Including CEO of AGI, Going on Medical Leave Edisi Jam

📌 MAROKO133 Update ai: Two OpenAI Execs, Including CEO of AGI, Going on Medical Le

Something’s going on at OpenAI — and it isn’t just the pre-IPO jitters.

According to Bloomberg, the company behind ChatGPT is sending not just one, but two top executives away on extended medical leave.

The company’s chief marketing officer Kate Rouch is reportedly stepping down to recover from cancer, the publication reports, though she’ll have a contingency in place to make limited returns to the office if her health allows.

And Fidji Simo, OpenAI’s CEO of artificial general intelligence development — and arguably one of the AI company’s most important cogs — is taking medical leave. Simo ultimately plans to return to her position, but will be gone for several weeks to find treatment for a neuroimmune condition.

On top of all that, the company’s chief operating officer Brad Lightcap is also being shuffled into a new role. According to Bloomberg, Lightcap will be the new special projects lead, forcing the chief revenue officer to take up some of his previous COO work.

If your head is spinning, just imagine what it’s like inside OpenAI’s hermetically sealed offices. The company has recently jettisoned some of its banner projects like Sora — the AI video generation model which included a massive partnership with Disney — while it juggles major bottlenecks with its data center buildout.

Against that chaotic backdrop, the company has begun an all-out push to go public, though it remains to be seen how its now thoroughly reshuffled executive branch handles the pressure.

In a statement to Bloomberg, the company insisted it has a “strong leadership team focused on our biggest priorities: advancing frontier research, growing our global user base of nearly one billion users, and powering enterprise use cases. We’re well-positioned to keep executing with continuity and momentum.”

More on OpenAI: Sam Altman Opens Up About Telling CEO of Disney That It Had All Been Smoke and Mirrors

The post Two OpenAI Execs, Including CEO of AGI, Going on Medical Leave appeared first on Futurism.

🔗 Sumber: futurism.com

📌 MAROKO133 Eksklusif ai: Scientists build quantum detector that measures microwav

Scientists at the École Polytechnique Fédérale de Lausanne (EPFL) have built a tiny detector capable of sensing microwave photons, which are about 10,000 times weaker than optical photons.

This work, which advances quantum technologies, also involved other European institutes, including the University of Basel, Lund University, and ETH Zurich. 

Detecting a single photon is difficult, but as scientists delve into the quantum realm, even microwave photons can make a difference. Everyday devices like Wi-Fi or radars emit microwave photons that can interfere with quantum experiments if they go undetected. So, scientists need reliable detectors for microwave photons. 

However, the technology that works for detecting photons does not work for microwave photons. When detecting photons, devices convert incoming light into an electrical signal that can be measured. But microwave photons are much weaker and have frequencies in the range of 0.3—30 GHz, which cannot elicit an electric signal response from the detector, requiring a different setup than that used by scientists. 

Double quantum dot to the rescue

Researchers at EPFL and other institutes in Europe teamed up to build a tiny detector that combines a semiconductor structure with a superconducting microwave cavity to form a resonant circuit capable of trapping microwave photons and measuring them. 

At the core of the detector is the double quantum dot, made up of two tiny semiconductor islands. Each of these islands can hold a single electron. The islands are grown on a gallium arsenide/aluminum gallium arsenide (GaAs/AlGaAs) heterostructure that hosts a two-dimensional electron gas, enabling precise control of electrons. 

One of the gates of these islands connects to the superconducting cavity built using Josephson junctions that allow quantum currents to flow and complete a microwave circuit. The cavity can absorb and store microwave photons at frequencies between three and 5.2 gigahertz. 

How does it work? 

When a microwave photon enters the cavity, and its energy matches the splitting of the quantum double dot, it is absorbed by the electron. This excites the system, causing the electron to move towards the dots and then tunnel into a nearby reservoir. This creates a tiny current that can be measured, thereby detecting the microwave photon. 

To evaluate detector performance, the researchers first measured the incoming microwave signal by monitoring changes in the device’s energy levels. They then measured the source-drain current through the double-quantum-dot device as the microwave power increased. When the signal was so weak that fewer than one photon was present, the current rose proportionally. 

The researchers noted that the system detected between 55 and 67.7 percent of incoming photons, reaching a peak of 70 percent. This demonstrates that most photons that enter the system can be reliably detected. 

More importantly, the detector works continuously and is reset as the electron moves in and out of the dots. The researchers are confident that the detector made using semiconductor material can help advance quantum computing using spin qubits. 

“Beyond setting a new benchmark for semiconductor-based microwave photodetectors, the work opens new perspectives for quantum microwave optics, quantum sensing, and scalable quantum information platforms,” said Pasquale Scarlino, researcher at EPFL who was involved in the work. 

The research was published in the journal Science Advances. 

🔗 Sumber: interestingengineering.com