What are some of the current challenges in developing a quantum computer and how might these challenges be overcome - by Silk Road - Quora Question Review

This document contains a review of the answer by Silk Road on the question in Quora: "What are some of the current challenges in developing a quantum computer and how might these challenges be overcome"
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Contents

• 1. Answer Review

Reflection

• Reflection 1 - Question Review

1. Answer Review

Quantum computing is like trying to build a skyscraper on a foundation of Jell-O. It's not just difficult; it's a whole new level of complexity. The first challenge is the issue of quantum coherence, or maintaining a quantum state. In the quantum world, particles can exist in multiple states at once, a phenomenon known as superposition. However, these states are incredibly fragile. Any interaction with the environment can cause a quantum system to lose its coherence, a process known as decoherence. This is like trying to balance a pencil on its tip; even the slightest disturbance can cause it to fall over.

The second challenge is quantum entanglement, another fundamental principle of quantum mechanics. Entangled particles are linked in such a way that the state of one instantly influences the state of the other, no matter the distance between them.

That is physical impossible
Only humans can perform such a task.
Only humans know that if there exists a marked set of shoes that if A has received the right shoe, that instantaneously he knows that B has received the left show.
For B the same situation exists. No physical influence is involved

This is essential for quantum computing, but creating and maintaining entanglement over large systems is a Herculean task.

In a Quantum Computer only small distances are involved. Large distances in this context are 1000 km.

Then there is error correction. In classical computing, we have robust error correction codes that can handle the occasional bit flip. But in quantum computing, errors can come from any direction, and correcting them without disturbing the delicate quantum state is a monumental challenge.

In a classical computer error correction is no issue, because IF it exists, which is rare, you buy a new one. In a Q

What can be done?

It's not going to be easy, but then again, nothing worth doing ever is. The first step is to develop better qubits, the basic units of quantum information. There are several types of qubits, including superconducting qubits, trapped ions, and topological qubits, each with their own strengths and weaknesses. By improving the design and fabrication of these qubits, we can increase their coherence times and make them more resistant to errors.

Next, we need to develop better quantum algorithms.

Quantum algos

Quantum algorithms are a whole new ballgame compared to classical algorithms.

To calculate the largest number, that means to devellop an algorthm, of for example 156, -456 and 783 is easy on a DC. On a quantum computer that is very difficult

They require a deep understanding of quantum mechanics and a lot of creativity. But the payoff is huge. A good quantum algorithm can solve problems that would take a classical computer longer than the age of the universe.

Finally, we need to build a supportive ecosystem for quantum computing.

This includes everything from education and training to funding and regulation. Quantum computing is a team sport, and it's going to take a concerted effort from scientists, engineers, policymakers, and educators to make it a reality.

So, Quantum computing is a wild, untamed frontier, full of challenges and opportunities. But remember, every challenge is just an opportunity in disguise. So, let's roll up our sleeves and get to work. The future of computing is in our hands.

3.

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