After the message was sent, Xiao Yu began to wait silently.

Over-distance communication is mainly achieved through the quantum entanglement effect, the so-called quantum entanglement, that is, two particles in an entangled state, affect one of the particles, and the other particle will be instantly sensed no matter how far apart. The specific principle of quantum entanglement is not yet known to humans, but this does not affect Xiao Yu's use of this principle.

However, the quantum entanglement effect cannot be directly used for communication, because although the information transmission between quantum is real-time, as an observer, it is impossible to know the meaning of a particle only through its parameters, and the parameters of two quanta must be combined to accurately decipher the information transmitted.

But in this way, it is back to the old way, and the parameters of another particle must be transmitted by conventional means in order to be transmitted to the observer, and it is still not calculated as superluminal.

However, Xiao Yu used an ingenious method to circumvent this obstacle. Xiao Yu uses a large number of entangled quanta to apply a certain logic algorithm to influence them, and the parameters of these quanta will have a certain law, and then apply the algorithm from the receiver to restore it, and the information to be transmitted can be restored.

However, there is a disadvantage to this approach, which is that when quantum communication takes place, there will be probabilistic errors in the information. With Xiao Yu's current ability, Xiao Yu can guarantee that the quantum communication receiver will receive information that is 99.99% similar to the original information, and the remaining 0.01 is to transmit the wrong information. This is the inevitable drawback of this logical algorithm, which can only be reduced by various means, and it is impossible to completely eliminate it.

Now, it's time to measure Xiao Yu's method if it's not feasible.

Seventy seconds and 0.2 milliseconds later, Xiao Yu received a message back.

"Hello, Universe. My name is Xiao Yu and I'm from Earth,"

Xiao Yu looked at this return message excitedly and sighed: "Ultra-distance communication technology has finally been developed. Well, there's a little error in this message, zuihou is a punctuation mark, the original message is a full stop, and the comma is sent back. This is the inevitable 0.01 in that probability. However, since it is feasible to be generous, then I can use jishu means to reduce the probability of this error to 1 in a trillion, and at that point, it will basically not affect me. ”

Next, Xiao Yu devoted himself to the research of quantum communication.

The advantages of quantum communication are obvious, the most obvious point is the real-time nature of communication, and secondly, the security of information.

Quantum communication is not carried out by sending electromagnetic waves, but through some process that Xiao Yu does not yet understand, which means that no matter how strong the interference between the two parties is, it will not have any impact on the transmitted information.

This advantage can be regarded as solving one of Xiao Yu's major heart problems. In the past, Xiao Yu had been worried that if the alien civilization he encountered realized that he was just an electronic life and not an intelligent civilization, he would use interference to deprive him of control over the rest of the spacecraft. But now, with quantum communication jishu, Xiao Yu is no longer afraid of any interference.

But this advantage is also a disadvantage. Since quantum communication does not use radio waves, it means that Xiao Yu cannot transfer himself through quantum communication. To achieve self-transfer, it is still necessary to rely on conventional radio waves.

After a lot of shiyan and improvements, Xiao Yu created the "Super Distance Type 1" quantum communication instrument, which will be able to provide Xiao Yu with real-time communication with an error of less than 1/10 million within 200 million kilometers.

If the distance exceeds 200 million kilometers, the accuracy of quantum communication will decline exponentially, and the information will quickly decay into a bunch of undecipherable garbled characters.

But even real-time communication within 200 million kilometers is too useful for Xiao Yu, and Xiao Yu can also extend this distance indefinitely by building a transfer station.

With the super-distance type 1 communication instrument, Xiao Yu's Tianyuan four star system construction progress has once again made a leap. Xiao Yu scattered tens of thousands of communication instruments in the four galaxies of Tianyuan, basically covering the entire four star systems of Tianyuan. As long as Xiao Yu is in the Tianyuan Four Galaxy, Xiao Yu can contact any instrument in the galaxy anytime and anywhere.

Xiao Yu sat in the orbit of Tianyuan A, commanded by remote control, and started the construction of the interstellar fortresses of Tianyuan C and Tianyuan B, not to mention the base camp of Tianyuan A, the entire planet has now been covered by hundreds of large interstellar docks, thousands of satellites, tens of thousands of spaceships and tens of thousands of interstellar batteries.

At Tianyuan C and Tianyuan B, Xiao Yu was equipped with ten super giant energy cannons, which had a range of 10 million kilometers, and a single shell could destroy an asteroid with a diameter of 20 kilometers. This was unbelievable before. You must know that the maximum yield hydrogen bomb that Xiao Yu can build at present can only blow up such an asteroid, not destroy it.

Because they are too huge, these energy cannons can only be built on the satellites of Tianyuan B and Tianyuan C, and none of Xiao Yu's existing spaceships can fit these big guys.

In addition to these ten super giant energy cannons, Xiao Yu was also equipped with a total of more than 10,000 village-level and township-level spaceships in these two places, as well as one hundred 300,000-ton county-level spaceships. In addition, in the asteroid belt, Xiao Yu also planted a large number of controlled mines and concealed turrets, his spacecraft will not be affected in any way when it passes, if there is an enemy to attack, these mines and turrets will be under Xiao Yu's control, and deal a devastating blow to the enemy.

The entire four star systems of Tianyuan were arranged by Xiao Yu like a net of heaven and earth. Xiao Yu was sure that if at this time, an enemy equivalent to the civilization level of the lizardman dared to invade, Xiao Yu could blast them into scum within a hundred seconds.

At this time, it had been more than two hundred years since Xiao Yu came to the Tianyuan Four Galaxy. In these two hundred years, Xiao Yu truly realized what heaven was like. That's right, this is paradise.

With infinite resources, precious peace, what could be better than here?

The four large particle colliders around the Tianyuan are colliding again and again, and they are generating huge amounts of shiyan data all the time. On the surface of Tianyuan A, space is also full of Xiao Yu's laboratories, and in these laboratories, Xiao Yu is conducting dozens of major categories and more than three thousand subjects of science.

Xiao Yu's scientific and technological development shows a thriving trend.

The most obvious is that Xiao Yu's material technology has finally broken through the shackles, and the first combat-type city-level spaceship has been built.

This municipal-level spaceship, which has reached a mass of four million tons in the unloaded state, is equipped with twenty energy cannons, each of which has 60% of the power of the ground cannons at the Tianyuan B and Tianyuan C interstellar fortresses. In Xiao Yu's war deduction, five city-level spaceships, carrying 800 county-level spaceships and 10,000 village-level and township-level spaceships, will have the ability to completely destroy an interstellar fortress.

This is a real bastion of war! Even, only two city-level spaceships, not even escort ships, can bombard the entire civilization of the lizardmen to slag.

During this period of time, Xiao Yu's computer technology has also made great progress, and the newly built super-photon computer has reached a hundred times the computing speed of the computer before reaching the Tianyuan Four Galaxy. This newly built computer was placed by Xiao Yu in the only city-level spaceship, and this city-level spaceship became Xiao Yu's new flagship.

Xiao Yu gave this city-level spaceship a homesick name.

"Since it's a city-level spaceship...... Then it's called the Beijing number. Xiao Yu thought, "It's a pity that the requirements for material technology for municipal-level spacecraft are too high, and my ability to produce this ultra-high-strength material is still very limited, and there will be no major breakthroughs in the foreseeable future." Specifically, it will take thirty years to build a city-level spaceship. Hey, you can't rush, take your time, it's still a long time anyway. ”

Xiao Yu thought about it, and once again devoted himself to the era of vigorous construction.

Gradually, a hundred years passed. Together with the Beijing, Xiao Yu built a total of four municipal-level spaceships, which were named Beijing, Shanghai, Tianjin, and Chongqing by Xiao Yu. In addition to the four city-level spaceships, Xiao Yu also built hundreds of county-level spaceships, thousands of township-level spaceships, and tens of thousands of village-level spaceships.

These spaceships all use nanorobot repair technology, and all spaceships at the county level and above are equipped with energy cannons.

If all these more than 10,000 spaceships are launched, they will occupy 70% of Xiao Yu's computing power, plus various logistics spaceships, ground bases, space batteries, controlled mines, concealed batteries and other equipment, Xiao Yu's computing power will be occupied. But Xiao Yu had nothing to do but smile bitterly.

Xiao Yu found that the speed of his computer technology development seemed to be unable to keep up with the development speed of his fleet.

"That's not a good sign." Xiao Yu thought, "It's time to speed up the development of computer technology, well, before there is a breakthrough in computer technology, stop the construction of war-type spacecraft for the time being." ”

Xiao Yu made up his mind.

Just when Xiao Yu was concentrating on the development of science and technology, four or two billion kilometers away from Tianyuan, a burst of distortion suddenly appeared in the pitch-black cosmic space, a pure white, and the whole body was streamlined, as if something like a drop of water appeared.

It seemed to be alive, silently observing Xiao Yu's movements. A month later, it sent a message to Xiao Yu.

"Hello, strange mechanical civilization."

――――――――

Sorry I forgot to update automatically...... This chapter came a little late.

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