Universal quantum computing with superconducting charge qubits

TL;DR

This paper demonstrates the implementation of universal quantum computing using superconducting charge qubits, showcasing various quantum operations and the feasibility of scaling to over 50 qubits with current technology.

Contribution

It introduces a comprehensive set of quantum operations for superconducting charge qubits, advancing towards scalable universal quantum computing.

Findings

Successful demonstration of single- and two-qubit gates

Parallel multi-qubit and multi-group operations achieved

Scalability to over 50 qubits with current technology

Abstract

Superconducting quantum circuit is a promising system for building quantum computer. With this system we demonstrate the universal quantum computations, including the preparing of initial states, the single-qubit operations, the two-qubit universal gate operations between arbitrary qubits, the multiple pairs of two-qubit gate operations in parallel, the coupling operations on a group of qubits in parallel, the coupling operations on multiple groups of qubits in parallel, the coupling operations on multiple pairs and multiple groups of qubits in parallel. Within available technology, a universal quantum computer consists of more than 50 qubits allowing operations is achievable with the design.