Classical computing is beginning to show its limitations. Traditional computers, however powerful, process information sequentially: each bit can be either 0 or 1. Even supercomputers, with their millions of cores, are forced to test solutions one at a time.
Quantum computing is no longer just theory: it is a rapidly expanding technological reality. According to McKinsey's Quantum Technology Monitor 2025 report, the global quantum computer market generated $650-750 million in 2024, with a forecast to exceed $1 billion in 2025.
1. Qubits: the heart of quantum computing
The QUBIT (quantum bit) is the quantum equivalent of the classical bit, but with a revolutionary feature: it can be in a state of 0, 1, or exist in a linear combination of both states simultaneously, by virtue of the principle of quantum superposition.
Imagine a globe: a classical bit can only be at the North Pole (0) or only at the South Pole (1). A qubit can also be anywhere on the surface of the globe. This allows it to represent multiple states simultaneously.
In a system with n qubits, superposition allows 2^n different states to be represented simultaneously. With just 30 qubits, a quantum computer can process more than a billion combinations in parallel.
2. Entanglement: the magic of interconnection
Another fascinating property is entanglement: two or more qubits can become correlated with each other, so that a change in one immediately affects the other, even if they are miles apart. This allows a quantum computer to coordinate qubits like an orchestra, synchronously and instantaneously.
3. Calculations through interference
Quantum algorithms use interference to amplify the probability of correct answers and suppress incorrect ones. This is what gives quantum computers their speed advantage over classical systems for specific classes of problems.
Where we stand today
Sinaura Quantum is actively developing hybrid classical-quantum systems that deliver measurable speedups today, without waiting for fault-tolerant quantum hardware. Our work on the Quantum Maritime Challenge 2025 demonstrated practical quantum optimization using QUBO-to-Ising encoding and DMRG/TTOpt solvers.