Quantum computers

Quantum computers

Quantum computers are nothing but computers that performs quantum computations. which

uses quantum states such as superpositions, entanglement.

History

What is quantum computing?

It is the area where the computing is done based on the principles of quantum theory

where it uses quantum bits or qubits (qubits are made based on the spinning o the

electron or orientation of photons).

History:

It was started in early 1980, as a quantum mechanical model of turning machine was

proposed by Paul Benioff, a great physicist at Argonne national labs

How quantum computers differ from normal computers?

1)classical computers work with the help of a transistor where it uses either one or

zeros but quantum computers calculate with qubits, representing zeros and ones at the

same time.

2)here power is directly proportional to the numbers of transistors in a 1:1 ratio, but ib

quantum computers the power increases exponent in proportion to the number of

qubits. this is the reason which makes quantum computers to calculate some of the

complicated calculation at a faster rate

3) Most everyday tasks are handled by normal computers, but quantum computers are

suited for optimization, data analysis, and stimulations.

4)classical computers have a low error rate and can operate at a low temperature but

quantum computers have a high error rate which should be kept in ultracold condition

Some key points are used in quantum computers

What makes a quantum computer work faster?

Here each qubit influences the neighbor bit which is present around it, superposition

and enlargement give an ability to process much more information in the least amount

of time. so these are considered faster than a classical computer.  

Facts about quantum computers……

● These are great for solving optimization problems.

● These types of computers will make it possible to store a large amount of data

where classical computers fail to stores a large amount of data (25 exabytes of

data in phone)

● To keep quantum computers cool, a D wave system is introduced which is -460

Fahrenheit.

● It also consumes less power from normal computers which differs 100 to 1000

times, because these computers are quantum tunneling.

● These computers are very sensitive as a small vibration in atoms may cause a

loss of information 

Advantages:

● Faster than normal computers

● These can perform extremely complicated operations which cannot be performed

by normal computers

● These types of computers possible stimulate quantum systems

Disadvantages:

● It is very difficult for an engineer to build a program as a result there will be errors

occurring.

● Compulsory low temperature is needed

The companies which use quantum computers;

● Microsoft

● Google

● Honeywell

● IBM(international business multinational company)

The companies that are developing quantum computers:

● Intel corporation

● IBM corporation

● D-wave system corporation

● Cambridge quantum computing limited