We propose and demonstrate an architecture for fluxonium-fluxonium two-qubit gates
mediated by transmon couplers (FTF, for fluxonium-transmon-fluxonium). Relative to …

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

The ability to perform fast, high-fidelity entangling gates is a requirement for a viable
quantum processor. In practice, achieving fast gates often comes with the penalty of strong …

Recent theoretical work has highlighted that quantizing a superconducting circuit in the
presence of time-dependent flux Φ (t) generally produces Hamiltonian terms proportional to …

Protecting superconducting qubits from low-frequency noise is essential for advancing
superconducting quantum computation. Based on the application of a periodic drive field …

Microwave driving is a ubiquitous technique for superconducting qubits, but the dressed
states description based on the conventionally used perturbation theory cannot fully capture …

We study the voltage-biased S-QD-S-QD-S Josephson junction, composed of three
superconductors (S) and two quantum dots (QDs). In the absence of an applied voltage, the …

Periodically driven (Floquet) phases are attractive due to their ability to host unique physical
phenomena with no static counterparts. We propose a general approach in nontrivially …

Using a fluxonium qubit with in situ tunability of its Josephson energy, we characterize its
energy relaxation at different flux biases as well as different Josephson energy values. The …

Properties of time-periodic Hamiltonians can be exploited to increase the dephasing time of
qubits and to design protected one-and two-qubit gates. Recently, Huang et al.[Phys. Rev …