**Quantum Computing**

**Quantum Computing**is one of the most advanced yet "under-developing" stage technology. To go deep inside the quantum computer it's all about

**quantum physics**. As we all know there is a big difference between 1940s computers and the computers now. The

**highest-end computer of the 1940s**is nothing in comparison to the lowest-end computers now in terms of computational powers. Yet there are things like basic computation which is and will remain the most important functions to run computers of any era. Time passed on and even a tiny chip can compute 100x more than that of the supercomputers then. The reason for all is simple and that is transistors, the transistors then were almost the size of a bulb and transistors now are even 500 times smaller than the human red blood corpuscles due to which millions of transistors are being studded on a single 5 cm long chips. These transistors work as the switch and as a matter of fact, transistors are the simplest form of data processors. Transistors have the function of a basic switch that either block or open the way for information coming through, and this information are made of Binary 1 and 0. These transistors combine to make logic gates. These logic gates also carry simple tasks like for example AND gate gives the output of 1 if all the inputs are 1 or else gives the output of 0. As we all know the number of transistors on a chip is increasing day by day for the increase in demand but there are some limitations too and that is the barrier in increasing the number of transistors on the chip as this can create many performance lags of the processors. So to not stop the technological progressions scientists are trying to use the quantum physics properties to the computer to increase the scalability of the computational force. So here comes the Quantum Computers in the scene.

**Quantum Computer - **

**Till now it was all about the normal classic computers of today's generation. With the computation of quantum computers, the classic computers just don't make any sense. Now when talking about the**

**Quantum Computer**they too work just the same as the classic computers but the only thing here is they don't work on the basis of the

**binary 1 and 0 t**hey too work on the basis of 1 and 0 but the way of it is different as the value of output is executed on the base of either magnetic spin or the horizontal and vertical positioning of Photon. In classic computers, the smallest value is in bits whereas in quantum computers it is all up to qubits, as a single bit contains one value but in qubits, it all depends on the superposition of the photon and we can predict the fixed outcome of a single qubit. As 1 and 0 in quantum computer depends on the position of the particular photon whether it is horizontal or vertical on that basis 1 or 0 is being decided. But the main thing here is the property of superposition in this the photon can be in the horizontal and vertical position both at the same time. This one property of superposition changes the whole game of taking the computational function to another level.

**Four qubits in superposition,**on the other hand, can be in all

**16 configurations at the same time**. With each additional qubit, this number climbs exponentially. Twenty of them are already capable of simultaneously

**storing a million values.**Entanglement is a strange and counterintuitive property that qubits can have a tight link that causes each qubit to react instantly to a change in the state of the other regardless of how far away they are. This means that if you measure just one entangled qubit, you can determine the properties of its partners without having to look at them. A basic set of inputs is fed into a

**logic gate**, which generates a single definitive output.

A quantum gate manipulates superpositions as input, rotates probability, and outputs another superposition. So a quantum computer entangles qubits and manipulates probabilities via quantum gates, then measures the result, collapsing superpositions to an actual sequence of 0s and 1s. This implies that you may perform all of the computations that are feasible with your configuration at the same time. Finally, you can only measure one of the outcomes, and it'll almost certainly be the one you want, so double-check and try again. However, by properly utilizing superposition and entanglement, this may be enormously more efficient than on a traditional computer.

But still, is there any chance you think Quantum Computer get a chance to stand against the classic one?

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