  Superconducting qubits are leading candidates in the race to build a quantum
computer capable of realizing computations beyond the reach of modern
supercomputers. The superconducting qubit modality has been used to demonstrate
prototype algorithms in the 'noisy intermediate scale quantum' (NISQ)
technology era, in which non-error-corrected qubits are used to implement
quantum simulations and quantum algorithms. With the recent demonstrations of
multiple high fidelity two-qubit gates as well as operations on logical qubits
in extensible superconducting qubit systems, this modality also holds promise
for the longer-term goal of building larger-scale error-corrected quantum
computers. In this brief review, we discuss several of the recent experimental
advances in qubit hardware, gate implementations, readout capabilities, early
NISQ algorithm implementations, and quantum error correction using
superconducting qubits. While continued work on many aspects of this technology
is certainly necessary, the pace of both conceptual and technical progress in
the last years has been impressive, and here we hope to convey the excitement
stemming from this progress.
