Understanding QUBITS

A cubit is nothing but a short form of quantum bit, in quantum computing , this is the basic unit of information .
We all know a a classical Bit can be 0 or 1 , but in the case of qubit it can have many states .. it ca be 0 or 1 or combination both at the same time .

Amazing isn’t it ?

This property is called superimposing.

This amazing property , of Superimposition, makes a qubit unique and allows it to multitask , it can hold information in variety of ways ., allowed multiple calculations to be performed simultaneously.

A qubit can exist in multiple states at a time and this property enhances the computational power to quantum computers .

This comes to great help in the fields of cryptography, simulating quantum systems and optimisation .
Another amazing property is entanglement .

When two or more cubits are entangled , the state of one becomes directly related to the state of the other , irrespective of how far apart they are .
This entanglement helps quantum computers to process highly complex informations much more efficiently as compared to classical computers . This is because , any change in the state of one entangled qubit will directly n instantaneously affect the partner qubit .

Qubits are the fundamental units of quantum computing . Keeping in view their unique properties hold they are being planned to be widely used in future in advanced computing technologies .

Because of their unique properties of superimposition and entanglement , they have capability to perform amazingly complex tasks way beyond the capability of classical bits side in today’s computing systems .

What is it about? Everything went above my head.

It has been over 23 years since I went to college.

QUBIT is the quantum version of the classic binary bit physically realized with a two-state device....some may exist naturally but mostly it is created by engineering any of the following .....

SPIN

Trapped Atoms and Ions

Photons

Superconducting circuits

A digital computer both stores and processes information using bits, which can be either 0 or 1.

Physically, a bit can be anything that has two distinct configurations: one represented by “0”, and the other represented by “1”. It could be a light bulb that is on or off, a coin that is heads or tails, or any other system with two distinct and distinguishable possibilities. In modern computing and communications, bits are represented by the absence or presence of an electrical signal, encoding “0” and “1” respectively.

A quantum bitis any bit made out of a quantum system, like an electron or photon. Just like classical bits, a quantum bit must have two distinct states: one representing “0” and one representing “1”. Unlike a classical bit, a quantum bit can also exist in superposition states, be subjected to incompatible measurements, and even be entangled with other quantum bits.

Having the ability to harness the powers of superposition, interference and entanglement makes qubits fundamentally different and much more powerful than classical bits.

To build quantum computers and other quantum information technologies we need quantum objects that will act as qubits. Scientists have learned to harness and control many physical systems to act as qubits. This allows us to match the demands of different quantum technologies to the advantages of each type of qubit.

Originally posted by: vijay

What is it about? Everything went above my head.

It has been over 23 years since I went to college.

Dear Vijay …23 yrs back when you went to college this thing called Qubit was not invented /discovered, this is a very recent thing and the future of computing technology. The next generation computers , mobile phones, iPhones, space travel , to name a few will be using this technology .


PS … the science and technology forum is locked , this topic deserves to be placed in that forum. I will request DT to move it there as n when that S&T forum is reopened .