To do large-scale quantum information processing, it is necessary to control the interactions
between individual qubits while retaining quantum coherence. To this end, superconducting …

We introduce a superconducting qubit architecture that combines high-coherence qubits
and tunable qubit-qubit coupling. With the ability to set the coupling to zero, we demonstrate …

A major challenge in the field of quantum computing is the construction of scalable qubit
coupling architectures. Here, we demonstrate a novel tunable coupling circuit that allows …

A central task towards building a practical quantum computer is to protect individual qubits
from decoherence while retaining the ability to perform high-fidelity entangling gates …

Controlled manipulation of quantum states is central to studying natural and artificial
quantum systems. If a quantum system consists of interacting subunits, the nature of the …

Unwanted ZZ interaction is a quantum-mechanical crosstalk phenomenon which correlates
qubit dynamics and is ubiquitous in superconducting qubit systems. It adversely affects the …

We propose a scheme to couple two superconducting charge or flux qubits biased at their
symmetry points with unequal energy splittings. Modulating the coupling constant between …

A challenge for constructing large circuits of superconducting qubits is to balance
addressability, coherence, and coupling strength. High coherence can be attained by …

Controllable interaction between superconducting qubits is desirable for large-scale
quantum computation and simulation. Here, based on a theoretical proposal by Yan et …

Quantum computation requires quantum logic gates that use the interaction within pairs of
quantum bits (qubits) to perform conditional operations. Superconducting qubits may offer …