Recent Post

MATLAB : Fourier transform

By -
Image
By Nuno Nogueira, CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=3912826 MATLAB has been  crucial programming language across worldwide that let us express matrix and array mathematics directly. In signal processing and communication it plays vital role in analysing and exploring time series data in time domain or frequency domain. For analysing non periodic signals in frequency domain we use Fourier transform instead of Fourier series ,which is used to express periodic signals in terms of infinite sum of sinusoidal terms .   Fourier transform can exist for :      1. Energy signals      2. Power signals       3. Impulse signals  That means absolutely integrable signals can have their Fourier transform only.  Formula for Fourier transform;   Then its come to use Fourier transform in MATLAB. So here is the code for Fourier transform of sinusoidal wave , for any other signal we ...
2 comments

Quantum Computer: The fastest computing machine

By -
quantum supremacy
quantum computer
pic source:-By National Institute of Standards and Technology 

Scientists and researchers keep working to improve technology day by day to solve new challenges. Quantum computer is a step towards the fastest computing machine. It is homologous of a traditional computer, but the technology used in both is totally different. Quantum computer is the application of Quantum Mechanics. It uses qubits or Quantum bits to process data.

Quantum computer:  Working

Today's computers use bits i.e. zero and one. zero and one are the representation of electrical or optical pulses, one represents the presence of current and zero represent the absence of current. All types of data (text, video, audio, image) are the long stream of zero and one.
In the other hand, Quantum computers use qubits which are subatomic particles such as electron and proton. Generating and managing of qubits is a big challenge for scientists and researchers. Generally, Generation and management of qubits are done by two methods:-
  • By using superconducting circuits cooled to a temperature colder than deep space.
  • By traping individual atom in the electromagnetic field on a silicon chip in ultra-high-vacuum chambers.
The main aim of both cases is to isolate qubits in a controlled quantum state.

 Qubits have some eccentric quantum properties that provide more processing power than the same number of binary bits(0 & 1). These properties are "Superposition" and "Entanglement".
Superposition refers to the multiple combinations of 1s and 0s simultaneously. Researchers use precision lasers or microwave beams to put qubits into superposition and manipulate them. 
Researchers can also generate a pair of qubits that "entangled". Entanglement refers to the two members of a pair exist in a single quantum state. If the state of one qubit changes then the state of another qubit will also instantly changed.

Quantum computer: Applications

Simulation of the behaviour of matter at the molecular level can be done by the quantum computer. It will be very useful in the field of the pharmaceutical industry. By comparing and analysing the behaviour of compounds at the molecular level could leads to finding new drugs.
The machine is great for mathematical calculations. It can solve problems that a traditional computer would take thousands of years to solve. Quantum computers are millions of times faster than any classical computer. It does not mean that quantum computer will replace the classical computer. Because the intent of a quantum computer is to be a different tool to solve the specific problems.
Quantum computer could be used to accelerate artificial intelligence. Other applications of a quantum computer are Cybersecurity, Financial Modeling, Cleaner Fertilization, Traffic Optimization, Weather Forecasting and Climate Change.

Quantum supremacy

Quantum supremacy is the point at which a quantum computer can complete mathematical calculation that is beyond the reach of even the most powerful supercomputer. But it is still unknown exactly how many qubits will be needed to achieve quantum supremacy. Because researchers keep finding new technologies and algorithms to boost the speed the classical computers.

 Companies like IBM, Google, D-Wave, Rigetti are working on quantum computing. But the field of quantum computing is still at the initial stage. No doubt in future the quantum computer will be the fastest computing machine.
-By Anshul Shakya
Student at National Institute of Technology, Patna, Bihar (India).

Comments

Post a Comment

Popular posts from this blog

Chandrayaan : A glorious legacy

By -
Image
In series of posts celebrating the success of ISRO, this is our third post and in this, we are going to remember a milestone of ISRO's journey, Chandrayaan-1.                                                                                                                      pic by:- Universe today Chandrayaan -1 was India's first mission to the moon. It was launched by ISRO in October 2008 and it was active until August 2009. The mission was a significant uplift to India's space program as most of the technologies used were developed in India. This mission is well known for the discovery of evidence of water molecules on the moon. MISSION HISTORY & OBJECTIVE The word...
Read more

Voyager : Journey of the twin to interstellar space

By -
Image
         Image credit: NASA/JPL-Caltech The Voyager mission was launched by NASA in Summer of 1977 which consists of two spacecraft named Voyager 1 and Voyager 2. The main mission for the dual spacecraft was to review Jupiter and Saturn. It's been more than 40 years, they have been travelling through our solar system, unveiling the mysteries of outer planets and discovering new moons and now they have reached in interstellar space. Let's have a look on their journey. LAUNCH Voyager 2 was launched on August 20, 1977. After 16 days, on 5th of September, 1977 voyager 1 was launched. The Voyager missions were designed to take advantage of a special alignment of the outer planets that happens every 176 years. It would allow a spacecraft to slingshot from one planet to the next, assisted by the first planet's gravity which means it will require less propellant and time. Voyager 1 was the first man-made object to reach beyond our solar system in interste...
Read more

ISRO: From bicycle to a billion dreams

By -
Image
Indian Space Research Organization (ISRO) is the space agency of the government of India. Today each and every person know about ISRO because of its remarkable achievements but since its establishment, it had gone through many ups and downs and many transformations. It started its journey with small rockets of just 30-50 kg payload and now it is carrying 4000 kg of payload to outer space. Let's have a look at its incredible journey. Establishment India's first space organization INCOSPAR (Indian national committee for space research) was established in 1962 by our first prime minister Jawaharlal Nehru and Vikram Sarabhai, a renowned Indian physicist and astronomer. He was the one who initiated space researches in India. Thumba equatorial rocket launching station was set up by INCOSPAR in Thiruvananthapuram for upper atmospheric research.  On 15th of August 1969, INCOSPAR was dissolved and ISRO was established with the vision of  "harnessing space technology f...
Read more