Chapter 176 Photon Control

Seeing that Lv Yongchang had no intention of interrupting him, Academician Tang Wenshan continued.

"You must be aware of the current quantum communication technology."

"It does not contain the so-called super-distance entanglement effect."

"It just uses quantum entanglement distribution and invisible transmission to strictly encrypt information."

"And at present, we do not have a theory that can use quantum super-distance entanglement effect to transmit messages."

(ps. In reality, quantum super-distance entanglement effect cannot be used to achieve super-distance communication, and the speed of information transmission is still limited by the speed of light.)

Lv Yongchang nodded.

He is naturally clear about this knowledge.

But...

"Academician Tang, the key difficulty that currently limits quantum communication technology, in my opinion, is nothing more than our inability to accurately control a single photon."

Tang Wenshan fell silent.

"That's right."

Tang Wenshan said with some hesitation: "If we can precisely control a single photon, then we only need to carry another entangled photon, and we can naturally achieve long-distance communication."

Lv Yongchang shrugged: "Isn't that good?"

"Our task now is very simple."

"Precisely control a single photon."

...

Three months later.

In the main laboratory.

A huge precision instrument is located in the center of the laboratory.

This is the scientific research result of everyone in the past three months.

A single-photon control device.

Lv Yongchang and Tang Wenshan stood in front of the control device with trepidation and looked at each other silently.

"Mr. Tang, let's start the experiment."

Lv Yongchang took a deep breath and said in a deep voice.

This is the first step to achieve quantum long-distance communication.

Only by achieving perfect control of a single photon can they use the quantum long-distance entanglement effect to transmit information.

When he heard the order issued by Lv Yongchang, Mr. Tang's eyes showed a bit of complexity.

Excitement, trepidation and expectation.

He slowly pressed a button in front of him.

The machine started.

The indicator light changed quickly.

As the indicator light turned green, a photon shot out from the single-photon emission instrument on the left side of the control device!

The photon ran in the conduit at a speed of 300,000 kilometers per second.

In just a moment, the single photon passed through the narrow conduit and entered a closed black box on the right.

A large number of polarizers, half-wave plates and interferometers were installed inside the black box.

The inner wall of the black box was equipped with a highly reflective mirror.

The function of the mirror is very simple, to prevent photons from escaping, or in other words, being absorbed by this closed black box.

The other equipment is to achieve precise control of photons.

"Single photon detected!"

After seeing some data on the display in front of him, Lv Yongchang's eyes suddenly became excited.

"Zero, try to see if you can accurately control the state of this photon!"

The photon runs too fast and the state is too complicated. Therefore, if you want to control it, you can only rely on Zero, a strong artificial intelligence.

"Yes, professor."

Along with Zero's voice, there was a slight humming sound of the machine running.

Looking at the complex data flashing on the screen, Lv Yongchang gently clenched his fist.

"Professor, it's successful."

Zero's flat voice echoed in the main laboratory: "The instrument successfully changed the motion state and spin state of this photon."

After a short silence, loud applause rang out in the main laboratory!

"Professor Lu! We succeeded!"

Tang Wenshan took a step and rushed to Lv Yongchang's side. He stretched out his hands and held Lv Yongchang's hands tightly, and the excitement in his eyes seemed to overflow!

"Yes!" Lv Yongchang breathed a sigh of relief, "We succeeded!"

Although there was a system guarantee, it was not until this moment that the huge stone hanging in his heart fell to the ground completely.

"Mr. Tang, next, we should prepare to study a pair of entangled photons."

Of course, before that, Lv Yongchang gave a group of scientific researchers a short vacation.

After all, not everyone can hold on to three consecutive months of high-intensity scientific research work.

…

After returning to the office, Lv Yongchang sat in his office chair and closed his eyes again.

From the moment the experiment was successful just now, a bold idea came to his mind.

Since they now have the precise control of a single photon, can the originally abandoned optical quantum computer be used again?

After all, the reason for abandoning the optical quantum computer at the beginning was that it could not be programmed and could only solve specific problems.

And the fundamental reason for being unable to program is that humans cannot precisely control photons!

After thinking of this, Lv Yongchang vaguely had a bolder idea in his mind.

With excitement, his consciousness entered the technology tree space.

Sure enough!

The technology tree has quietly changed.

The brightness of the cursor of quantum super-distance communication technology has reached 50%!

And this is not the biggest change.

The biggest change is that a bright white solid line extends next to this cursor.

[Photon control: achieve precise control of a single photon! ]

The cursor is bright.

In Lv Yongchang's feeling, this cursor seems to be a few points brighter than other cursors!

When Lv Yongchang focused his attention on the cursor of photon control, a dim dotted line extended from it.

The direction of extension was the "ceiling" symbolizing the first-level civilization!

He subconsciously held his breath and silently watched the dotted line slowly extending in the fluorescent green space!

Breakthrough!

The moment the dotted line broke through the ceiling of the first-level civilization, he only felt a bang in his mind!

His face flushed, and he looked at the top of the technology tree system with rapid breathing, trying to look up at the so-called second-level civilization technology!

The technology tree interface slowly moved up.

Several icons that were dim and almost invisible appeared in front of him.

[Energy weapons preliminary mastery]

[Photon computer technology]

[……]

The moment he saw those dim cursors, his heart rate rose rapidly!

Sure enough!

He guessed right!

The emergence of photon control technology means a breakthrough in the basic technology of photon computers!

And the photon computer, which originally seemed to have no effect, has become the basic technology of the second-level civilization!

…

"Professor?"