Quantum Computers

AWS's first-ever quantum chip uses "cat qubits" to reduce errors exponentially as more qubits are added to a system. Scientists say it will lead to scalable and efficient quantum computers.

By combining digital and analog quantum simulation into a new hybrid approach, scientists have already started to make fresh scientific discoveries using quantum computers.

Scientists have cooled qubits to record low temperatures using a quantum refrigerator powered by "hot thermal baths."

We may be on the cusp of quantum supremacy. But what does that actually mean?

String theory remains our best candidate for a theory of everything, but where can it be tested? By studying black holes, says Marika Taylor.

Scientists in Australia say they've cracked a key hurdle facing the the development of scalable quantum computers and practical quantum data storage.

D-Wave says its new Advantage2 processor, which is designed for complex applications in AI, optimization and data science, is faster and more accurate than its existing 5,000-qubit system.

When combined with Qiskit software tools, the 156-qubit R2 Heron quantum processor can perform 5,000 two-qubit gate operations — double the previous best — meaning it's ready for complex quantum computations, IBM scientists say.

Quantum computers will one day outpace the fastest supercomputers on the planet, but what will they be used to accomplish?

Researchers claim to have broken RSA encryption using a quantum computer, but what really happened?