Here we introduce a simple two-qubit model suitable to address these issues. We then report an all-optical experiment which simulates the model and permits us to recover and control, against ...

After all, qubits are simple enough to be one logical bit ... To illustrate the theory, Fullwood and Vedral used a ‘toy model’ of a one-qubit universe. A toy model is an extremely simplified ...

(Courtesy: IBM) A 127-qubit quantum processor has been used by an international ... quantum spins that interact with their nearest neighbours. Despite being very simple, the model is extremely ...

IBM's 2017-model, 16-qubit quantum processor ... At this stage, they have managed to demonstrate the technology using a simple two-qubit processor, and the results are impressive.

and a simple structure consisting only of a single Josephson junction in a resonator. The team achieved fidelities from 99.8% to 99.9% for 13-nanoseconds-long single-qubit gates on three different ...

Today, a startup called Atom Computing announced that it has been doing internal testing of a 1,180 qubit quantum computer and will be making it available to customers next year. The system ...

There's a general consensus that performing any sort of complex algorithm on quantum hardware will have to wait for the arrival of error-corrected qubits. Individual qubits are too error-prone to ...

IBM's 20-qubit quantum computers, of which there are now five, have a quantum volume of 16, but IBM hasn't yet tested the 53-qubit model.

In this case, the qubit’s behavior lines up with the way we describe spacetime using regular Euclidean geometry. To illustrate the theory, Fullwood and Vedral used a ‘toy model’ of a one ...