Classical computers are composed of registers and memory. The collective contents of these are often referred to as state. Instructions for a classical computer acts based on this state. It consists of long string of bits, which encode either a zero or a one.
The world is running out of computing capacity. As Moore's law states, the number of transistors on a microprocessor continues to double every 18 months, hence it is high time for the introduction of atom sized microprocessors. So the next logical step will be to create quantum computers which will harness the power of atoms and molecules to perform the processing tasks.
The word quantum was derived from Latin, meaning 'how great' or 'how much'. The discovery that particles are discrete packets of energy with wave like properties led to the branch of Physics called Quantum Mechanics.
Quantum Computing is the usage of quantum mechanics to process information.
Qubits represent atoms, ions, electrons or protons and their respective control devices that are working together to act as computer memory. Because a quantum computer can contain multiple states simultaneously, it has the potential to be millions of times more powerful than super computers.
Qubits are very hard to manipulate, any disturbance causes them to fall out of their quantum state. This is called decoherance. The field of quantum error correction examines the different ways to avoid decoherance.
Entanglement is an extremely strong correlation that exists between quantum particles. It is so strong that two or more quantum particles will be linked perfectly, even if separated by great distances.
A classical computer works with ones and zeroes, a quantum computer will have the advantage of using ones, zeroes and 'super positions of ones and zeroes' . This is why a quantum computer can process a vast number of calculations simultaneously.
2. They can easily crack encryption algorithms.
3. Machine learning tasks such as NLP, image recognition etc
The basic built-in quantum data type in Quantum Computer Language is qreg(quantum register) which can be interpreted as an Array of qubits(quantum bits).
Google's quantum computer called 'Sycamore' consist of only 54 qubits. It was able to complete a task called Random Circuit Problem. Google says Sycamore was able to find the answer in just a few minutes whereas it would take 10,000 years on the most powerful super computer.
At times an impulse is required to trigger an action. Special Thanks to Amazon Braket for being an irresistible impulse to make me write this blog on Quantum Computing.
The world is running out of computing capacity. As Moore's law states, the number of transistors on a microprocessor continues to double every 18 months, hence it is high time for the introduction of atom sized microprocessors. So the next logical step will be to create quantum computers which will harness the power of atoms and molecules to perform the processing tasks.
The word quantum was derived from Latin, meaning 'how great' or 'how much'. The discovery that particles are discrete packets of energy with wave like properties led to the branch of Physics called Quantum Mechanics.
Quantum Computing is the usage of quantum mechanics to process information.
Qubits
The main advantage of quantum computers is that they aren't limited to two states since they use Qubits or Quantum Bits instead of bits.Qubits represent atoms, ions, electrons or protons and their respective control devices that are working together to act as computer memory. Because a quantum computer can contain multiple states simultaneously, it has the potential to be millions of times more powerful than super computers.
Qubits are very hard to manipulate, any disturbance causes them to fall out of their quantum state. This is called decoherance. The field of quantum error correction examines the different ways to avoid decoherance.
Super position and Entanglement
Super position is the feature that frees up from binary constraints. It is the ability of a quantum system to be in multiple states at the same time.Entanglement is an extremely strong correlation that exists between quantum particles. It is so strong that two or more quantum particles will be linked perfectly, even if separated by great distances.
A classical computer works with ones and zeroes, a quantum computer will have the advantage of using ones, zeroes and 'super positions of ones and zeroes' . This is why a quantum computer can process a vast number of calculations simultaneously.
Error Correcting Codes
Quantum computers outperform classical computers on certain problems. But efforts to build them have been hampered by the fragility of qubits. This is because they are easily affected by heat and electro magnetic radiation. Error Correcting Codes are used for this.Quantum Computer
Computation device that make use of quantum mechanical phenomena, such as Super position and Entanglement to perform operations on data is termed as Quantum Computer. Such a device is probabilistic rather than deterministic. So it returns multiple answers for a given problem and thereby indicates the confidence level of the computer.Applications of Quantum Computers
1. They are great for solving optimization problems.2. They can easily crack encryption algorithms.
3. Machine learning tasks such as NLP, image recognition etc
Quantum Programming Language(QPL)
Quantum Programming Language is used to write programs for quantum computer. Quantum computer language is the most advanced implemented QPL.The basic built-in quantum data type in Quantum Computer Language is qreg(quantum register) which can be interpreted as an Array of qubits(quantum bits).
Interesting facts
Quantum computers require extremely cold temperatures, as sub-atomic particles must be as close as possible to a stationary state to be measured. The cores of D-wave quantum computers operate at -460 degrees F or -273 degrees C which is 0.02 degrees away from absolute zero.Google's Quantum Supremacy
Quantum Supremacy or Quantum Eclipse is the way of demonstrating that a quantum computer is able to perform a calculation that is impossible for a classical one.Google's quantum computer called 'Sycamore' consist of only 54 qubits. It was able to complete a task called Random Circuit Problem. Google says Sycamore was able to find the answer in just a few minutes whereas it would take 10,000 years on the most powerful super computer.
Amazon Braket
AWS announced New Quantum Computing Service (Amazon Braket) along with AWS Center for Quantum Computing and Amazon Quantum Solutions Lab at AWS re:Invent on 2 December, 2019. Amazon Braket is a fully managed service that helps to get started with quantum computing by providing a development environment to explore and design quantum algorithms, test them on quantum computers, and run them on quantum hardware.References
Information collected from various sources on the Internet.At times an impulse is required to trigger an action. Special Thanks to Amazon Braket for being an irresistible impulse to make me write this blog on Quantum Computing.
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