Cyber ​​Heroes

Chapter 426 Request
Thermal noise is the noise caused by electronic Brownian motion of passive components such as resistors and feeders in communication equipment.It exists in all electronic devices and transmission media, is a result of temperature changes, and is a manifestation of the second law of thermodynamics.

For conventional large-scale computers, thermal noise is just a little bit of noise generated when the machine is running, and basically has no impact.However, for quantum computers, it is a natural enemy.

The more sophisticated something is, the more susceptible it is to being affected.

It's as if electronic components can't withstand the radiation that living organisms can.

Thermal noise, which is little more than hum in electronic components, can also create huge perturbations in qubits.

Things like qubits are too small and too precise.

Therefore, if you want a quantum chip to run, you must keep the qubits at a temperature where they can work.

But it's hard.The qubit is at such an energy level that it is severely disturbed by thermal noise at temperatures above 300mK.Initially, for a quantum computer to work, these quantum logic gates had to exist in an environment near absolute zero.

MilliKelvin-level operating temperature is one of the biggest constraints on the development and application of quantum computing
With the development of technology, humans began to find ways to make quantum logic gates work at higher temperatures.

Researchers in materials science and condensed matter physics will study how to reproduce superconductivity at higher temperatures, and then complete "high temperature superconductivity" [the high temperature here generally refers to 77K, that is, above minus 196.15 degrees], and then Then look for ways to create superconducting quantum logic gates at this temperature.

Researchers in computing science and applied mathematics have been trying to create a new algorithm that allows programs to run in an environment where "every logic gate is not absolutely reliable and can make mistakes at any time".

In Xiangshan's era, most of the computing resources of the quantum chips he used were actually used for self-correction against noise.

The two methods are two-pronged to allow the quantum logic gate to operate at an ambient temperature close to liquid nitrogen.

"80K, really good." Xiang Shan said with emotion.

A long time ago, Xiang Shan used quantum chips that were cooled by lasers, and quantum chips that were maintained by dilution refrigerators.

Of course, these devices are not easy to handle now.

However, if it is only 80K, it is not difficult to achieve.The small refrigerator of helium is a very mature technology.

He really remembered Xiang Shan.

But the only problem is...

There may not be room in his prosthetic body.

Xiang Shan didn't expect that he would encounter a quantum chip now, and he didn't think enough when designing the prosthetic body.Although it is not impossible to change, the layout still needs to be changed.

The most critical part is heat dissipation.

The essence of a refrigeration system is to consume the heat of the target space through cooling, or to derive heat from the target space—of course, the difference between these two perspectives is not very great.Because according to the second law of thermodynamics, the heat emitted by the refrigeration system must be greater than the heat it consumes in the target space.

In other words, if you want to keep the chip cool, you have to keep releasing heat.

And there is already a fission furnace in his body that continuously generates high temperatures.

If it continues to increase, the concealment of the body will become a big problem.

Xiang Shan didn't want to be targeted by such a pediatric method as thermal imaging.

Of course, there are ways to avoid this kind of thing.For example, some substances with extremely high specific heat capacity will be used to temporarily store the waste heat in the body and discharge it intensively when exposed.

But this means is also limited.

If your prosthetic body can't move because of overheating, it's not worth the loss.

Looking at the storage container the size of a mineral water bottle in his palm, Xiang Shan pondered for a while, almost forgetting his surroundings.It wasn't until Takahashi Ziyi reminded him that he came back to his senses and said, "I was so surprised to see this thing, I forgot my surroundings for a moment."

"It's human nature." Takahashi Ziyi said.

Xiang Shan nodded.

And Ai Tielang was still in a state of shock.

"Rangers... are...so easy to kill..."

In the eyes of ordinary knights, the rangers are considered to be extremely terrifying in martial arts.Except for the patron lord who has already stood in another world, these eagle dogs are the most vicious.Ai Tielang was no longer afraid of riding alone, but a few rangers would still make him dangerous.

But look at the handwriting of this senior...

This 15-yuan isotope battery seems to have been seized in the same battle.

And at least twenty or thirty rangers participated in that battle.

——About three years ago... At that time, many knights were together...Maybe it is really possible...

Ai Tielang thought so.

Xiang Shan put away the quantum chip and patted him on the shoulder: "Speaking of which, Comrade Ai. When we are free, we will go for a stroll in the wasteland?"

"Ah...but I..."

"Oh, there are rangers chasing after you." Xiang Shan nodded: "I can help you with this. If you want to pay, just use the isotope battery on the ranger. What do you think?"

The implication is that if there are other trophies, he doesn't have to.

Among the local rangers on Earth, the assembly rate of the Phonon Knife is not even 5.00%. This is in stark contrast to King Agni's subordinates who have an assembly rate of more than one-third of the Phonon Knife.

Xiang Shan didn't think that the rangers could contribute good materials other than isotope batteries.

Ai Tielang was overjoyed, and said: "What a shame... this..."

It seems that after seeing this old man, they are not good at talking.

Xiang Shan hugged his chest: "Well, I feel embarrassed, it's okay, it's okay. In fact, I also hope that my comrades can help me."

Takahashi Ziyi thought "it really is so" flashed in her mind.She cupped her hands to Xiang Shan, and said, "Senior, if you have any requests, you can just say so. But anything I can do..."

Xiang Shan stood up: "No, actually I don't expect you to shed your blood for a few batteries. It's really just a small favor."

"I plan to find a time in the next few years to go to Paradox City. Of course, I don't want to die, I want to come out alive. I even want to bring the Ninth Warrior out together."

"However, the legion guarding the Ninth Valkyrie in Paradox City will not be distracted, because there are so many of them, and they only need to focus on the small area of ​​the Ninth Valkyrie. And the number is everything The natural enemy of martial arts."

"So, I just beg everyone, when I rush into Paradox City, stand outside Paradox City for a while."

(End of this chapter)