At Tom’s Guide, we regularly test the best true wireless on the market. And this future model signed Urbanista could indeed end up in our laboratory. The reason ? The Phoenixes come with a casing covered in Powerfoyle photovoltaic cells that allow the headphones to be charged with ambient light. The manufacturer’s objective is that users never have to draw a cable to power their true wireless.

“The streamlined charging case charges continuously whenever exposed to all forms of light for a true wireless audio experience free from charging cords and cables,” promises the manufacturer on its site. Thus, it suffices to leave the case uncovered to never run out of battery. “In theory, one hour of light should be enough for one hour of listening”.

Headphones that devour the light

On the Urbanista application, it is even possible to follow the intensity of the light as well as the speed (in milliamps per hour) at which the case is charging. The application also allows you to deploy updates, customize gestures and control the equalizer.

Note that users can go through the USB-C port to recharge the old-fashioned box (without light, the latter would offer a battery life of 32 hours). But the brand hopes they will never need to opt for this alternative.

Moreover, the Phoenix benefit from active hybrid noise cancellation, multipoint and IPX4 certification. Bluetooth 5.2 compatible, they are embellished with touch controls and custom silicone tips. Expected for the end of 2022, they will be sold at a price of 149 euros.

IBM’s ‘super-fridge’ to cool quantum computers

The quantum computers are not ordinary computers. The proof ? They have among other things need extremely low ambient temperature to work. The company IBM got it right and she made a huge “super fridge” which can cool objects to temperatures lower than those that can be measured in space. The super-fridge is codenamed Project Goldeneye.

It is thanks to their ability to use the properties of quantum physics that quantum computers manage to reach unparalleled speeds and powers. For instance, the principle of superpositionaccording to which particles can exist in two states at the same time, allows to simultaneously process large amounts of data. However, these states are very sensitive to interference from the environment, including heat. Because of this, quantum experiments and computers need cryogenic temperatures.

The system developed by IBM

The Goldeneye refrigerator is part of what is called dilution refrigerators. These use a mixture of helium-3 and helium-4 to cool their contents to a temperature of the order of the milli-Kelvinthat is, thousandths of a degree above absolute zero.

Goldeneye has differences from existing dilution refrigerators. It has an experimental volume of 1.7 m3, which is 2 to 3 times larger than previous models. The refrigerator is also modular and has a clamshell design that allows the external vacuum chamber to open laterally. This gives scientists easy access to the material inside.

With Goldeneye, you can use different cooling units that cool at different temperatures. It weighs over 6 tons, helping to reduce vibrations that can interfere with quantum experiments. But the most important point is that the space it occupies is one tenth of the space occupied by existing dilution refrigerators.

Test results

During testing, IBM’s super-fridge was capable of cooling down to a temperature of 25 mKwhich is 1000 times colder than the average temperature in space. The company’s team tested the system with a quantum chip that the scientists placed in the device. They were able to get a coherence time of 450 microseconds. This is the length of time qubits retain their information.