What is a quantum computer and what is its relationship to digital currencies?

A question and the variables it carries, if someone were to look at it two decades ago to say that it was just science fiction!

But it has become a reality and we will answer it on the Arab Bitcoin website in a detailed and simplified manner.

Technology has developed very recently, and what was science fiction in the past has become a reality in the present.

Among the most important recent developments is the development of quantum computers. Before we get to the quantum computer, we first turn to quantum computing.

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Quantum computing:

Scientists and researchers are beginning to harness the power of quantum physics to build powerful computers with the ability to crack the world’s cryptographic algorithms.

Quantum computing can threaten the security of the global financial system, top-secret intelligence agencies, as well as all the data on your phone.

Quantum physics is known as quantum physics and is a type of physics that only applies to things small enough.

In classical physics almost everything behaves in a predictable manner.

Where calculations and measurements can be accurate once you start studying ordinary things in classical physics.

But when you study it through quantum physics, things become highly unpredictable.

Measurements and calculations in quantum physics are not guaranteed to be accurate, as they can only be guessed using probabilities.

On a quantum level, particles can start to behave like waves and even change their state suddenly depending on whether they are being observed or not.

In the quantum world, everything becomes uncertain.

What is a quantum computer?

By harnessing the laws of quantum mechanics, quantum computers can be more powerful than modern and more advanced computers.

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The most important thing to understand about quantum computers is their scale of “quantum bits” or “qubits.”

A classic computer uses “bits”, which are represented by “0” and “1”.

The regular “bits” are binary i.e. they are either on or off one state at a time.

While a qubit can handle “0” or “1” or switch between them, or both at the same time.

Because the basic units of quantum computers are powerful ‘bits’.

Quantum computers can perform functions or calculations at a rate that ordinary computers cannot even approach.

Why quantum computers may someday crack crypto-based cryptocurrencies:

Illustrative example:

If we had four bits from a normal computer, they could be in any of 16 groups i.e. be:

1000, 1100, 1110.

But you can only choose to be in one group when doing a calculation.

But with a qubit, you can be in all of these 16 positions at once, and the number increases dramatically the more qubits you add.

Only 20 “qubits” can store more than a million values ​​at the same time, allowing a quantum computer to be able to solve a problem by performing calculations in parallel rather than one at a time.

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Who invented the quantum computer:

The idea of ​​quantum mechanics physics can be traced back to the research published in the year 1900 by Max Planck, who can be said to be the father of quantum theory.

While Paul Benioff demonstrated and demonstrated that quantum computers would come later in the 1980s and 1990s.

Where Paul was able to prove that it is possible to build a computer that works according to the laws of quantum physics.

What distinguishes quantum computing?

Since a qubit can switch between states whether it is state ‘1’, ‘0’ or in multiple states at the same time.

Qubits can perform multiple computations at the same time or simultaneously.

Qubits allow quantum computers to process complex computations very quickly, while an average computer would take more than half a billion years to crack the encryption of Bitcoin, a quantum computer could crack it in just under 10 minutes?

How are quantum computers made?

To further simplify and understand what quantum computers are, we present a brief description of how they are made, based on Source.

Basically, traditional computers consist of millions of tiny switches that manage the flow of electrons.

That is, the ability to control what is according to electricity, whether it flows through the gate or not. This is for conventional computers.

In quantum computers, because those gates are shrunk to the subatomic level, quantum computers, through an idea called quantum tunneling, which offers access to the subatomic level, electrons can simply jump over the gate, rendering the old machine’s ability to manage this flow useless.

As a result, quantum computers are manufactured quite differently from conventional computers.

Since qubits operate in a world of subatomic particles, these qubits do strange things like being in any one of 16 groups at the same time.

Therefore, a quantum computer uses a quantum gate instead of the logic gate that is used in traditional computing.

In other words, quantum computers apply quantum gates to their entanglement, process potential possibilities, and then measure the outcome.

So to be able to control this process as a whole is very difficult and is only available to large companies at the moment.

As did Google recently, which used a superconducting metal that operates in temperatures eight times cooler than space, which is a far cry from a desktop computer.

As a result, quantum computers are unlikely to leave the lab anytime soon.

Does a quantum computer pose a threat to cryptocurrency:

According to smart people like Ethereum founder Vitalik Buterin and crypto activist Andrea Antonopoulos, there is no need to panic about quantum computers right now.

According to Andrea Antonopoulos, quantum computers are nowhere near powerful enough to crack something like Bitcoin.

As for Vitalik’s statement and his answer about the threat of quantum computers to cryptocurrencies, we discussed it in a previous topic.

In theory, yes, quantum computing could break the crypto-like crypto that is built upon, such as Bitcoin and Ethereum.

But it lies in the fact that quantum computers like the ones announced by Google are more evidence of the possibility of industrialization and proof of concept than explaining the techniques that can be achieved, according to Buterin.

The current encryption used in major block chains may be strong enough to withstand even quantum computers, which means that not all encryption will be weak.

Not only can quantum computers be used to crack encryption, they can also help build more robust encryption.

Several crypto companies are already preparing for the threat of quantum computers such as Ethereum and their modernization plans for software to block quantum computers.

In the end, it can be said that the crypto world is safe, at least for the time being, but in the future, no one knows.

Quantum computer-resistant blockchains such as Praxxis and QAN are already being developed

Meaning, even if quantum devices are ready to crack the encryption of cryptocurrencies, the latter will not stand idly by, but will be updated periodically in the face of the surrounding challenges.

Read also:

What is the impact of the Google Quantum computer on the crypto world?

What is the relationship of the digital currency Bitcoin to the quantum computer?