Artificial atoms realized by superconducting circuits offer unique opportunities to store and
process quantum information with high fidelity. Among them, implementations of circuits that …

High-quality two-qubit gate operations are crucial for scalable quantum information
processing. Often, the gate fidelity is compromised when the system becomes more …

Quantum error correction requires the detection of errors via reliable measurements of
multiqubit correlation operators. As these operations are inherently faulty, fault-tolerant …

Tunable coupling of superconducting qubits has been widely studied due to its importance
for isolated gate operations in scalable quantum processor architectures. Here, we …

One of the key challenges in current Noisy Intermediate-Scale Quantum (NISQ) computers is
to control a quantum system with high-fidelity quantum gates. There are many reasons a …

Quantum gates and entanglement based on dipole–dipole interactions of neutral Rydberg
atoms are relevant to both fundamental physics and quantum information science. The …

Improving the coherence of superconducting qubits is a fundamental step towards the
realization of fault-tolerant quantum computation. However, coherence times of quantum …

Present-day, noisy, small or intermediate-scale quantum processors—although far from fault
tolerant—support the execution of heuristic quantum algorithms, which might enable a …

As the superconducting qubit platform matures towards ever-larger scales in the race
towards a practical quantum computer, limitations due to qubit inhomogeneity through lack …

Indefinite causal order (ICO) is playing a key role in recent quantum technologies. Here, we
experimentally study quantum thermodynamics driven by ICO on nuclear spins using the …