Cyber Heroes

Thermal noise (thermalnoise) is the noise caused by electronic Brownian motion of passive components in communication equipment such as resistors and feeders. It exists in all electronic devices and transmission media. It is the result of a temperature change and a manifestation of the second law of thermodynamics.

For conventional large computers, thermal noise is just a little noise generated when the machine is running, and it basically does not affect it. However, for quantum computers, it is a natural enemy.

The more sophisticated things are, the more susceptible it is.

It is as if electronic components cannot withstand the radiation that living organisms can withstand.

For electronic components, it is nothing but thermal noise, which can also cause huge disturbances to qubits.

This thing about qubits is really too small and too precise.

However, if you want the quantum chip to run, you must keep the qubit at a temperature where it can work.

But it is difficult. The energy level of the qubit causes it to be severely disturbed by the thermal noise generated by the temperature above 300mK. In the beginning, to make quantum computers run, these quantum logic gates must exist in an environment close to absolute zero.

The working temperature of milliKelvin is one of the biggest constraints for the development and application of quantum computing.

With the development of technology, humans have begun to look for ways to make quantum logic gates higher The method of temperature work.

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

Researchers in computational science and applied mathematics have been trying to create a new algorithm that can make the program work in an environment where "every logic gate is not absolutely reliable and will go wrong at any time". Run down.

In the era of Xiang Shan, most of the quantum chips he used were actually used for self-correction against noise.

The two time methods are combined to allow the quantum logic gate to operate at an ambient temperature close to that of liquid nitrogen.

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

A long, long time ago, Xiang Shan used a quantum chip that relied on laser cooling, and also used a quantum chip that was maintained by a dilution refrigerator.

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

However, if it is only trifling 80K, it is not difficult to achieve. The small refrigerator with helium working medium is a mature technology.

Xiang Shan He really remembers.

But the only problem is...

He doesn't necessarily have a place in the body.

Xiang Shan did not expect that he would encounter a quantum chip now, and the prosthetic body was not considered enough when designing it. Although it is not impossible to change, but still need to change the layout.

The most critical part is heat dissipation.

The essence of the refrigeration system is the total energy value of the target space heat consumed by cooling or the total energy value of the heat derived from the target space-of course, the two perspectives are not very different . 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 maintain the low temperature of the chip, you have to keep emitting heat.

And he already has a fission furnace in his body that constantly produces high temperatures.

If you increase it further, the body's concealment becomes a big problem.

Xiang Shan doesn't want to be locked into a pediatric approach like thermal imaging.

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

But this method also has loneliness.

If your prosthetic body becomes impossible to move because of overheating, you will lose more than you gain.

Xiang Shan looked at the storage container the size of a mineral water bottle in his palm, pondered for a while, and almost forgot about his surroundings. It was not until Takahashi Ziyi reminded him that he returned to his senses and said: "It was a pleasant surprise to see this thing, and for a while I forgot about the surroundings."

"such is human nature." Takahashi Ziyi road.

Xiang Shan nodded.

And Ai Tielang is still in a state of shock.

"Rangers...is...so easy to kill..."

In the eyes of ordinary knights, Rangers are extremely terrifying in martial arts. Except for the asylum lord who is already standing on another Heavenly Layer, these eagle dogs are the most ferocious. Ai Tielang is no longer afraid of a single ranger, but if a few rangers go together, he will still be surrounded by perils.

But looking at this senior's handwriting...

These 15 isotope batteries seem to have been captured in the same battle.

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

——It was about three years ago...At that time, a lot of knights were all together... Maybe it could be...

Thinking Ai Tielang.

Xiang Shan put the quantum chip away and patted his shoulder: "speaking of which, Comrade Ai. When do we have time to go for a stroll on wasteland?"

"Ah...but I..."

"Oh, there are rangers chasing after you." Xiang Shan nodded: "I can fix this for you. If you are paid, use that tour The isotope battery on the cavalry is ready. What do you think?"

The implication is that if there are other spoils of war, he can ignore it.

Among the local rangers of Earth, the assembly rate of phono knives is not even 5%. This is in stark contrast to the subordinates of King Agni who have a phono knives assembly rate exceeding one third. Compared.

Xiang Shan doesn't think that the Ranger can contribute good materials other than isotope batteries.

Ai Tielang was overjoyed and said: "How ashamed of this...this..."

It seems that after seeing this Old Senior, they are not good at talking.

Xiang Shan hugged his chest: "Well, I think sorry, it's okay. Actually, I also hope that all colleagues can help me."

Takahashi Ziyi flashed through her heart. "Sure enough" thought. She arched her hand at Xiang Shan and said, "What are the requirements of seniors? You can say it straight. But whatever I can do with the blade door..."

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

"I plan to find time in the next few years to visit Paradox City. Of course, I don’t want to die, I still want to come out alive. I even want to bring out the ninth Martial God."

"However, Legion who guards the ninth Martial God in Paradox City will not be Distracting, because they have that many people, they only need to focus on the small area of ​​the ninth Martial God. And the number of people is the natural enemy of all martial arts."

"So, I only implore you to stand outside Paradox City for a short while when I rush into Paradox City."