Computación cuántica
José Barranquero Head of Data Science and AI

Quantum computing. What is it, current situation and future prospects

Quantum computing is different from computing classical paradigm  computing. The main novelty is the use of qubits, which can have the state 1 and 0 at the same time. Compared to classical computing bits, which can only take one of the values ​​in each moment.

This exponentially increases the computational capacity, since much less qubits are required to represent and / or process the information.

In classical computing, to double the computing power it is necessary to double the number of the processors’ transistors. In Quantum Computing, to double the calculation capacity, it is enough to add 1 single qubit, which places us before a scenario of exponential growth.

QUBITS

EQUIVALENT ADDITIONAL BITS

2

512 bits

3

1.024 bits

10

15 kilobytes

16

1 megabyte

20

17 megabytes

30

17 gigabytes

35

500 gigabytes

100

More bytes than atoms on Earth

280

More bytes than atoms in the Universe

 

And the time to solve exponential problems is significantly reduced:

SCALE TYPE

RESOLUTION TIME

Classical computing

330

years

3300

years

Age of the universe

Quantum computing

10

minutes

11

minutes

24 minutes approx