Qubits tagged posts

Qubits, the quantum equivalent of digital bits, are fragile and prone to errors. That makes building reliable quantum computers extremely difficult. One fix has been to use traditional magic state distillation, which filters out flaws, but it is extremely resource-intensive.

Another potential solution is magic state cultivation, which cleans up a noisy magic state (a specially prepared quantum state that is needed for advanced calculations) directly inside a protected qubit. But this approach has never been tested successfully on real hardware.

However, in a first for quantum computing, Google Quantum AI researchers have demonstrated magic state cultivation on Willow, a superconducting proces...

A major obstacle in the development of powerful quantum computers is the growing number of cables required to control a computer as the number of qubits increases...

Harvard physicists working to develop game-changing tech demonstrate 3,000 quantum-bit system capable of continuous operation

One often-repeated example illustrates the mind-boggling potential of quantum computing: A machine with 300 quantum bits could simultaneously store more information than the number of particles in the known universe.

Now process this: Harvard scientists just unveiled a system that was 10 times bigger and the first quantum machine able to operate continuously without restarting.

In a paper published in the journal Nature, the team demonstrated a system of more than 3,000 quantum bits (or qubits) that could run for more than two hours, surmounting a series of technical challenges and representing a significant step toward building the super computers, wh...

Quantum computers have the potential to solve problems far beyond the reach of today’s fastest supercomputers. But today’s machines are notoriously fragile. The quantum bits, or “qubits,” that store and process information are easily disrupted by their environment, leading to errors that quickly accumulate.

One of the most promising approaches to overcoming this challenge is topological quantum computing, which aims to protect quantum information by encoding it in the geometric properties of exotic particles called anyons...