Because of the possibility of interference, quantum computers work to reduce it and ensure accurate results. To understand quantum computing and how it works, you first need to understand qubits, superposition, entanglement and quantum interference. In such a state, changing one qubit directly affects the other in a manner that’s predictable. According to IBM,  it’s what a qubit can do rather than what it is that’s remarkable. A qubit places the quantum information that it contains into a state of superposition. “Groups of qubits in superposition can create complex, multidimensional computational spaces. Complex problems can be represented in new ways… Read More

We propose a measurement-based model for fault-tolerant quantum computation that can be realized with one-dimensional cluster states and fusion measurements only; basic resources that are readily available with scalable photonic hardware. Our simulations demonstrate high thresholds compared with other measurement-based models realized with basic entangled resources and 2-qubit fusion measurements. Its high tolerance to noise indicates that our practical construction offers a promising route to scalable quantum computing with quantum emitters and linear-optical elements. It is imperative to state that although quantum sensing is not established yet as quantum computation, it delivers humbler manufacturing difficulties of quantum sensing hardware. Exploring… Read More

However, as experiments scale up, deficiencies in these models become apparent, leading to frequent updates and rapidly changing numbers. The described working principles of quantum computers led to the misconception that quantum computers can perform calculations at orders of magnitude faster than the computers we now use and that they are more powerful and superior in functionality. However, scientists mention that there are many tasks in which quantum computers do not have any significant advantage over classical computers unless the algorithm being used exploits quantum parallelism. But in order to enable this, engineers have to fit more and more transistors… Read More