8/9/2019 Qantum Computer

1/18

Quantum ComputerQuantum Computer

8/9/2019 Qantum Computer

2/18

IntroductionIntroduction

Device that compute using

superpositioning.

100,000,000 times faster

then silicon-based computer.

Run with no energyconsumption.

8/9/2019 Qantum Computer

3/18

SUPERPOSITIONINGSUPERPOSITIONING

8/9/2019 Qantum Computer

4/18

Superposition in linkSuperposition in link--listlist

pointerpointer

8/9/2019 Qantum Computer

5/18

How does quantum computerHow does quantum computer

works?works?

Depends on observing the state of

quantum bits.

IBM have built quantum computer

using NMR to measure & manipulate

spine of individual atoms.

practically it is not developed.

8/9/2019 Qantum Computer

6/18

some reasons to developsome reasons to develop

quantum computerquantum computer Atoms change energy state very

quickly._much more quickly then

fastest computer processor.

Given right type of problem each qbit

can take the place of an entire

processor.

8/9/2019 Qantum Computer

7/18

In a linear Paul traps:In a linear Paul traps:

requirement:

1)a quantum system consisting amany quantum bits.2)100% preparation of quantum

system before computation.3)strong interaction between qbit.

4) coherent evaluation of the system.

5)100% read out of quantum system.

8/9/2019 Qantum Computer

8/18

Drawback of an iron trapDrawback of an iron trap

quantum computer.quantum computer. The chain of ion cant be arbitrarily

long .I.e. no of qbit is limited to the

no of 10-100 for experimentalreasons.

Coherence time limited by interactionwith environment.

Quantum system to complicate I.e.need to much infrastructure.

8/9/2019 Qantum Computer

9/18

8/9/2019 Qantum Computer

10/18

Structure of QC According toStructure of QC According to

Walther GroupWalther Group

The register of Quantum Computer contains

a ion chain is trapped in the central part ofthe linear ion trap.

8/9/2019 Qantum Computer

11/18

Controlled Not GateControlled Not Gate

It is the control version of the classical

X-OR gate,

If a input is unchanged & toggle the b

value if & only if the a input is changed.

I/P O

/PA B A B

0 0 0 0

0 1 0 1

1 0 1 1

1 1 1 0

8/9/2019 Qantum Computer

12/18

Butterfly GateButterfly Gate

The job of the quantum computer is

convert it into superposition of two

possible state 0 & 1 and 50/50 chanceof developing either a 1 or a 0 of its

output.

8/9/2019 Qantum Computer

13/18

Introduction Of QuantumIntroduction Of Quantum

ComputingComputingQuantum Mechanism

Quantum Mechanism Says that the

the Photons of Light are Traveled Both

Path simultaneously at The Same time

& Collapsing Down to Only One Path

Upon Measurement Time

8/9/2019 Qantum Computer

14/18

Quantum ComputingQuantum Computing

8/9/2019 Qantum Computer

15/18

Application:Application: Encryption technology

Ultra-Secure&Super-Dens Communication

Improvement error Correction & ErrorDetection

Molecular simulationQuantum Computer Can Simulate the

Physical Process that effect of quantumComputer & How their product intersection eachother

True Randomness

Cryptography

Searching

Factorization

8/9/2019 Qantum Computer

16/18

AdvantagesAdvantages

More memory

Fast computing

Easy to solve a complex problem or

some which is not possible in

classical computer

8/9/2019 Qantum Computer

17/18

Disadvantages

Disadvantages

More Complex in Design

Higher Cost

Till it is Not Use in practice

8/9/2019 Qantum Computer

18/18

THANKTHANK

YOUYOU