The progress witnessed within the field of quantum computing has been enabled by the
identification and understanding of interactions between the state of the quantum bit (qubit) …

Encoding a qubit in logical quantum states with wave functions characterized by disjoint
support and robust energies can offer simultaneous protection against relaxation and pure …

Quantum computers have made extraordinary progress over the past decade, and
significant milestones have been achieved along the path of pursuing universal fault-tolerant …

Identifying, quantifying, and suppressing decoherence mechanisms in qubits are important
steps towards the goal of engineering a quantum computer or simulator. Superconducting …

Dielectrics with low loss at microwave frequencies are imperative for high-coherence solid-
state quantum computing platforms. Here we study the dielectric loss of hexagonal boron …

Noise within solid-state systems at low temperatures can typically be traced back to material
defects. In amorphous materials, these defects are broadly described by the tunneling two …

Niobium offers the benefit of increased operating temperatures and frequencies for
Josephson junctions, which are the core component of superconducting devices. However …

We demonstrate a superconducting transmon qubit in which a Josephson junction has been
engineered to act as its own parallel shunt capacitor. This merged-element transmon …

The large physical size of superconducting qubits and their associated on-chip control
structures presents a practical challenge toward building a large-scale quantum computer …

Quantum computers can potentially achieve an exponential speedup versus classical
computers on certain computational tasks, recently demonstrated in superconducting qubit …