Starting a dollar spike system

Chapter 279 Quantum Computer

Guo Dongling said, and Jiang Fan followed her side and replied.

Not long, Guo Dongling took Jiang Fan and came to the president's office.

I knocked on the door, and a middle-aged man's voice came from the room.

"Please come."

Guo Dongling twisted the door handle, pushed the door, side of the road: "Mr. Jiang, please."

The room has gone out of the dean, and there are also Tang Zhenhai. They are also there, have five people.

"Mr. Jiang."

Tang Zhenhai saw Jiang Fan arrived, got up and smiled and nodded toward him.

"Mr. Tang."

"Tell you, this is Mr. Jiang. Yesterday, I would like to see those of Jiang Mr. Jiang, I didn't say more."

"Mr. Jiang, this is the dean of Dai Jianzhong and the Science and Technology College, this is ..."

Tang Zhenhai introduced the name of Ä.

Jiang Fan nodded and thought it was.

"I learned that Mr. Jiang is coming today, our science and technology institute, has been prepared in advance, do not know if Mr. Jiang needs to take a break, and give them a quantum computer?"

"Dai Mr., no, let's go now."

"Well, Mr. Jiang, Mr. Tang, please."

"please."

Dai Jianzhong took them, left the office, and went to the Science and Technology Research Center.

Guo Dongling followed them, took out the mobile phone, and inform Mr. Jiang, they are also preparing it over there.

When they came to the large conference room, more than one hundred people were sitting on the seat.

Dai Jianzhong invited Jiangfan to go to the stage, then introduce you to everyone: "Hello everyone, this is Jiang Mr. Jiang, today we have to go to Mr. Jiang, come to the Science and Technology Institute, tell us quantum computer, everyone welcomes!"

Snapped! Snapped! Snapped! Snapped! Snapped! Snapped!

The fierce applause sounded.

Looking at these people, Jiang Fan's slightly, after Dai Jian said, he also said a few words, and then started.

Quantum computers are a physical device that follows the quantum mechanics to perform high speed mathematics and logic operations, store and process quantum information.

The basic laws include uncertain principles, corresponding principles, and Boer's theory.

It applies common, such as electronic products mainly based on semiconductor materials, laser burning discs, nuclear magnetic resonances, and the like.

Quantum characteristics may break through the limit of existing classical information systems in terms of improving operational speed, ensuring information security, increasing information capacity, and improving detection accuracy.

A 250 quantum bit (consisting of 250 atoms), may store 250 times of 250 times, more than the number of all atoms in the universe.

Use quantum search algorithm to attack existing password systems, classic computing takes 1000 years of operation, quantum computers only less than 4 minutes.

The quantum key system uses a quantum state as an information carrier, and its safety is guaranteed by the quantum mechanics.

Based on the quantum invisible pathway, a multi-end distribution can be implemented, and the quantum Internet is constituted.

Schrödinger "Cat" and EPR

The birth of quantum mechanics profoundly changing human society: high-tech, laser, semiconductor and other high-tech, laser, semiconductor, etc., which have promoted social development, laser, semiconductor, etc. in the 20th century, are from quantum mechanics.

Then, is it indeed in accordance with the rules of quantum theory?

One party represented by Eins is always the theory of quantum power is not complete. "God will not play the dice", and the other party represented by GE Benhagen's leader BI is the correctness of quantum theory.

The wave particles of the quantum objects forces people to introduce the wave function (quantum state) to describe the state of the quantum object.

The famous physicist fees have pointed out that the exquisiteness of quantum mechanics is the concept of introducing a chance (ie quantum).

In fact, the quantitative characteristics of the quantum world originated in this quantum state, and the focus on the long-term intense debate of quantum theory is also in this quantum state.

Ordinary digital computers run on the binary system of 0 and 1, called "Bit".

But quantum computers are far more powerful.

They can be operated on quantum bit (Qubit), which can calculate the value between 0 and 1.

Imagine an atom placed in a magnetic field, which rotates like a gyro, so its rotating shaft may not be a downward finger.

Common sense tells us that atoms rotation may also be downward, but it is not possible.

However, in the singular world of quantum, atoms are described as sum of two states, a sum of upward atoms and a downward atom.

In the wonderful world of quantum, each object is used to describe the sum of all incredible states.

Imagine a string of atoms in a magnetic field to rotate in the same way. If a bunch of laser is irradiated over this string atom, the laser beam can leap the group atom to quickly flip some of the rotating shafts of some atoms.

By measuring the difference between the entered and left laser beam, we have completed a complex quantum "calculation", involving many spin fast moving.

From mathematical abstraction, quantum computer performs calculations based on aggregate, and ordinary computers perform calculations based on elements (only one element in the collection, quantum calculation is not distinguished).

Take the function y = f (x), x∈A as an example. The input parameter of the quantum calculation is to define domain a. One step to get the output value domain B, ie B = f (a); the classic calculated input parameter is X, obtain the output value y, to calculate multiple calculations to get the value domain B, ie Y = f (x), x∈A, y∈B.

Quantum computers have a problem to be solved, that is, the output value domain B can only randomly remove a valid value y.

Although the elements in the output set B have be made far less than the elements in the input set A, they still require multiple calculations when all of the valid values ​​are needed.

1, quantum state, quatumstate

Quantum superposition state, QuantumsuperPosition

3, quantum bit, quibit

4, UnityTransformation

5, quantum logic, quantumlogic

6, quantum door, quantumgate (corresponding to traditional logic gates, is actually some special positive transformations)

7, quantum algorithm, Quantumalgorithm (of course, quantum computers can also achieve traditional algorithms)

Current computer processes binary "bit" (bit), only two states, 0 or 1; quantum computer, encodes and calculates with "quantum bits" (Qubit).

A quantum bit may be 1 or 0, and it is also possible to be a certain superposition state of 1 and 0 (different from the superimposed weight, this superimposed state can be infinite, but it is difficult to adjust in practice. Weight, usually each of the weights or proportions of each of them).

In general, a quantum computer can simultaneously have a state of 2 to pass the number of times the quantum bit. In the upper stage, 2 quantum bits, while the number of states is 2 seconds, is 4; if it is 3 quantum bits, the number of states is 2 ^ 3 = 8 ...