# Superconducting Qubits: Current State of Play

## TL;DR

Superconducting qubits are advancing rapidly, demonstrating high-fidelity gates and early quantum algorithms, making them promising for scalable, error-corrected quantum computing in the near future.

## Contribution

This review highlights recent experimental progress in superconducting qubit hardware, gate fidelity, readout, NISQ algorithms, and quantum error correction techniques.

## Key findings

- Demonstrated high-fidelity two-qubit gates
- Implemented early NISQ algorithms
- Progress in quantum error correction

## Abstract

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.