"Hello Miss Liu. ”

Jiang Fan smiled at her.

"Since Wednesday, the school has learned the news of Mr. Jiang's arrival on Friday, and we have been preparing, I wonder what Mr. Jiang plans to tell the students this time?" Liu Cai'e smiled with a curious tone.

"Indecision, quantum mechanics, this time I'm going to talk about quantum mechanics. Jiang Fan smiled.

"Quantum mechanics, so Mr. Jiang has mastered a lot?" Liu Cai'e was slightly shocked when she heard this.

"Almost, you'll know when the afternoon officially begins. ”

At present, Jiang Fan is reluctant to say more, because as long as this thing is discussed, it will not be discussed for half a day.

Liu Cai'e also knew, and didn't ask any more, just curious, this afternoon, Jiang Fan will prepare what will be.

Quantum mechanics also encompasses many kinds.

The word quantum is derived from the Latin word meaning "how big" or "how many".

In quantum mechanics, it refers to a discrete unit assigned to a specific physical quantity, such as the energy of a resting atom.

The discovery that particles are discrete energy packets with wave-like properties led to a branch of physics about atomic and subatomic systems, which today is known as quantum mechanics.

It is the foundation of mathematical frameworks in many fields of physics and chemistry, including condensed matter physics, solid state physics, atomic physics, molecular physics, computational physics, computational chemistry, quantum chemistry, particle physics, nuclear chemistry, and nuclear physics.

Although Jiang Fan looks very young, being invited by Tang Zhenhai to give a lecture at the Institute of Science and Technology is enough to prove that Tang Zhenhai is very optimistic about Jiang Fan.

"Mr. Jiang, have you eaten?"

"Well, not yet. ”

"Then Mr. Jiang, I'll take you to the cafeteria for some food. ”

"Okay, Miss Liu, I'm sorry for you. ”

"It's okay, Mr. Jiang, please come with me. ”

Liu Cai'e smiled and walked towards the cafeteria with Jiang Fan.

It's about half past twelve at noon, and there are still quite a few students in the cafeteria, eating.

"Teacher Liu, did you bring your boyfriend to the cafeteria for dinner?" As soon as he went to the cafeteria, Liu Cai'e's student coaxed.

When Liu Cai'e heard this, her pretty face turned red and coughed lightly: "You hurry up and eat your words, this is Mr. Jiang, and I am here to teach you a lesson today." ”

"Mr. Jiang, so handsome?"

Among them, there are many girls and children, and when they see Jiang Fan, they look nymphomaniac.

Some are bold: "Teacher Jiang, do you have a girlfriend?"

"I have a girlfriend. Jiang Fan smiled.

"We actually have a girlfriend, it seems that we don't have a chance. ”

"These children like to coax, Mr. Jiang, let's ignore her, let's go, go to the canteen, now there are fewer people, what you want to eat, you can let the chef in the canteen do it." ”

"It's okay, I'll eat the same as them, that's it. ”

Jiang Fan shook his head, there was no need to let the chef do it again.

Liu Cai'e took Jiang Fan here and said with a smile: "Auntie, this is Mr. Jiang who came to our school to give a lecture, come here to eat, don't shake your hands when you cook the dishes." ”

"You doll, what are you talking about, is Auntie like that?"

Aunt Cooking glanced at Liu Cai'e, brought a lunch box, and cooked for Jiang Fan, while Liu Cai'e helped Jiang Fan cook.

After he finished eating, Liu Cai'e smiled and said, "Mr. Jiang, it's still early, do you need to rest and smile?"

"Is this necessary, Mr. Tang can come to the College of Science and Technology?"

"Leader Tang is now on our principal's side, shall I take you there?"

"Well, you tell me the location, I'll just go over by myself, you go and rest. Jiang Fan shook his head, he could go over by himself, there was no need to trouble Liu Cai'e again.

"Alright then, out of the dining hall, there's an office building opposite, and the principal's office is on the third floor. Liu Cai'e explained the location.

Jiang Fan went to the place where he bought snacks and bought a bottle of water for Liu Cai'e, which was regarded as thanking her for leading the way.

"Miss Liu, then we'll see you in the afternoon. ”

"Okay, Mr. Jiang. ”

Jiang Fan smiled slightly, turned around and left here.

It wasn't long before he reached the third floor of the office building, found the principal's number on the door, and knocked on the door.

"Please come in. ”

The voice of a middle-aged man came from inside.

Jiang Fan pushed open the door and walked in.

"It turned out to be Mr. Jiang, please take a seat. ”

Tang Zhenhai saw Jiang Fan coming, and hurriedly greeted him.

"Mr. Tang, we meet again. ”

"Come, Mr. Jiang, let me introduce you, this is the principal of the school, Zhao Zhichen, and this is the assistant Sun Deyou. ”

"Mr. Zhao, Mr. Sun, hello. ”

"Mr. Jiang, you are good, your deeds, I heard Lao Tang say that it is an honor for Mr. Jiang to come to our school to give a lecture. Zhao Zhichen smiled.

"Mr. Zhao, it is my honor to be able to give a lecture at the School of Science and Technology. ”

"Haha, Mr. Jiang is too polite, I don't know what Mr. Jiang plans to talk about this time?"

"Quantum mechanics. ”

"Oh, quantum mechanics?"

"In addition to quantum mechanics, I also want to talk about quantum computers. ”

"Mr. Jiang, quantum mechanics, we almost all know about it, but what is this quantum computer?" Zhao Zhichen said curiously.

Some of the basic arguments of quantum theory do not seem "mysterious", but its inferences seem very "mysterious".

Let's assume a "quantum" distance, which is the two endpoints A and B of the minimum distance.

According to quantum theory, an object can reach B directly from A without passing through either point between A and B.

In other words, the object suddenly disappears at point A and appears at point B at the same time. You can't find an example of this in the real macrocosm of reality other than myths.

Quantum theory has broken the "common sense" and "intuition" that people have built up in the macrocosm.

"I wonder if you've heard of Schrödinger's cat?"

Schrödinger's cat is an ideal experiment on quantum theory.

The test consisted of a very poor cat, sealed in a secret room with food poison.

There is a hammer on the vial, which is controlled by an electronic switch, which is controlled by radioactive atoms.

If the nucleus decays, α particles are released, the electronic switch is triggered, the hammer falls, smashes the poison bottle, and releases the cyanide gas inside, and the cat will surely die. This cruel device was designed by the Austrian physicist Erwin Schrödinger, hence the name Schrödinger.

Quantum theory argues that if we don't lift the lid and observe, we will never know whether the cat is dead or alive, and it will always be in a superposition of neither dead nor alive, which is seriously contrary to our daily experience.

A quantum computer is a kind of physical device that follows the laws of quantum mechanics to perform high-speed mathematical and logical operations, and to store and process quantum information.

Quantum computers are characterized by fast running speed, strong ability to process information, and wide range of applications.

Compared with ordinary computers, the more information is processed, the more advantageous it is for quantum computers to perform calculations.