Quantum error mitigation is expected to play a crucial role in the practical applications of
quantum machines for the foreseeable future. Thus it is important to put the numerous …

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 …

In the noisy intermediate-scale quantum (NISQ) era, quantum error mitigation will be a
necessary tool to extract useful performance out of quantum devices. However, there is a big …

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 …

Error mitigation is an essential component of achieving a practical quantum advantage in
the near term, and a number of different approaches have been proposed. In this work, we …

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

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 …

Even with the recent rapid developments in quantum hardware, noise remains the biggest
challenge for the practical applications of any near-term quantum devices. Full quantum …

To achieve the practical applications of near-term noisy quantum devices, low-cost ways to
mitigate the noise damages in the devices are essential. In many applications, the noiseless …

Quantum computers have enabled solving problems beyond the current machines'
capabilities. However, this requires handling noise arising from unwanted interactions in …