Quantum Computing: IBM Event

I recently had the opportunity to attend an IBM event at the new Howest building, where I was introduced to the upcoming world of quantum computing. Here’s a summary of what I learned during the event.

The Quantum Leap

Quantum computing is a revolutionary technology that promises to transform the way we process information. Unlike classical computing, which uses bits (0 or 1), quantum computing uses qubits, which can exist in states between 0 and 1. This is a concept that traces its roots back to the days of Albert Einstein.

A qubit can be in a state of superposition, where it can be both 0 and 1 at the same time. This is represented by a two-dimensional matrix. The state of a qubit is described by the following equation: ∣a²∣+∣b²∣=1 where a and b are the probabilities of the qubit being in the 0 or 1 state.

Quantum Gates and Measurements

Quantum gates, such as the H-gate, are used to manipulate the state of qubits. After applying quantum gates, measurements are taken, which collapse the qubits back to classical bits (0 or 1).

The Power of Quantum Computing

One of the most exciting aspects of quantum computing is its potential to solve big problems with a relatively small number of qubits. This is because the computational power of qubits grows exponentially with the power of 2.

The State of Quantum Computing Today

Today’s quantum computers are still very noisy, but significant strides are being made. IBM’s Condor is the first CPU with over 1000 qubits, while Heron, with 133 qubits, demonstrates the potential for scalability by combining different chips.

IBM’s Quantum System Two represents a scalable system for developing larger quantum computers in the future. The development roadmap includes a code assistant, circuit optimization, and resource management. New error correction codes and system modularity are also being developed.

Quantum Computing Use Cases

Quantum computing is attracting interest from large corporations. For example, Boeing is exploring its use to develop stronger and lighter materials, while ExxonMobil is also investigating potential applications.

Quantum Computing and Cryptography

Quantum computing poses a significant threat to asymmetric cryptography. The Shor algorithm, for example, could crack our current form of asymmetric cryptography by finding the two prime numbers used in such systems.

Symmetric key cryptography, on the other hand, is not in danger from quantum computing. However, asymmetric systems, such as Diffie-Hellman and RSA, are vulnerable.

It’s predicted that by 2030, quantum computers will be able to crack RSA. In response, the NSA is launching projects to be quantum safe within two to three years. Meanwhile, NIST is launching competitions to develop quantum-safe algorithms.

The Global Quantum Race

China is investing heavily in quantum computing, even more so than the USA/NATO. This has raised concerns about potential cybersecurity threats.

In conclusion, quantum computing represents a significant leap forward in our ability to process information. While there are still many challenges to overcome, the potential benefits are enormous. As we continue to explore this exciting new frontier, it’s clear that the future of computing is quantum.