For quantum computers to successfully solve real-world problems, it is necessary to tackle
the challenge of noise: the errors that occur in elementary physical components due to …

The inevitable accumulation of errors in near-future quantum devices represents a key
obstacle in delivering practical quantum advantages, motivating the development of various …

Minimizing the effect of noise is essential for quantum computers. The conventional method
to protect qubits against noise is through quantum error correction. However, for current …

Numerous quantum error-mitigation protocols have been proposed, motivated by the critical
need to suppress noise effects on intermediate-scale quantum devices. Yet, their general …

We present a unified approach to analyzing the cost of various quantum error mitigation
methods on the basis of quantum estimation theory. By analyzing the quantum Fisher …

Parameterized quantum circuits (PQCs) have been widely used as a machine learning
model to explore the potential of achieving quantum advantages for various tasks. However …

We develop the general framework of virtual resource distillation, an alternative distillation
strategy proposed in Phys. Rev. Lett. 132, 050203 (2024) 10.1103/PhysRevLett …

In the era of noisy intermediate-scale quantum devices, the number of controllable hardware
qubits is insufficient to implement quantum error correction. As an alternative, quantum error …

Singular value decomposition is central to many problems in engineering and scientific
fields. Several quantum algorithms have been proposed to determine the singular values …

Distillation, or purification, is central to the practical use of quantum resources in noisy
settings often encountered in quantum communication and computation. Conventionally …