NISQårene

NISQårene refers to the Noisy Intermediate-Scale Quantum era. This is a period in the development of quantum computing where devices are capable of executing a modest number of qubits, typically between 50 and a few hundred, but these qubits are not yet error-corrected and are therefore prone to noise. This noise can arise from various sources, including environmental interactions and imperfections in the quantum hardware itself, leading to errors in computation.

Despite these limitations, NISQårene computers are considered powerful enough to potentially outperform classical computers for certain specific tasks. This is often referred to as achieving "quantum advantage" or "quantum supremacy." Researchers are actively exploring algorithms and applications that can leverage the capabilities of NISQ devices without requiring full fault tolerance. These applications span fields such as quantum chemistry, materials science, optimization problems, and machine learning.

The development of NISQårene hardware is characterized by rapid advancements in qubit coherence times, connectivity, and control fidelity. However, overcoming the challenge of noise remains a central focus. Strategies to mitigate errors include error suppression techniques and developing quantum algorithms that are inherently robust to noise. The NISQårene is seen as a crucial stepping stone towards the eventual realization of large-scale, fault-tolerant quantum computers.