Quantum error mitigation
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 challenge of noise: the errors that occur in elementary physical components due to …
Exponential time-scaling of estimation precision by reaching a quantum critical point
Quantum metrology refers to the use of quantum resources in parameter-estimation
protocols, aiming at enhancing its precision. The quantum Fisher information is a key …
protocols, aiming at enhancing its precision. The quantum Fisher information is a key …
Steering-enhanced quantum metrology using superpositions of noisy phase shifts
Quantum steering is an important correlation in quantum information theory. A recent work
[Nat. Commun. 12, 2410 (2021) NCAOBW 2041-1723 10.1038/s41467-021-22353-3] …
[Nat. Commun. 12, 2410 (2021) NCAOBW 2041-1723 10.1038/s41467-021-22353-3] …
Optimal protocols for quantum metrology with noisy measurements
Measurement noise is a major source of noise in quantum metrology. Here, we explore
preprocessing protocols that apply quantum controls to the quantum sensor state prior to the …
preprocessing protocols that apply quantum controls to the quantum sensor state prior to the …
A hybrid framework for estimating nonlinear functions of quantum states
Estimating nonlinear functions of quantum states, such as the moment tr (ρ m), is of
fundamental and practical interest in quantum science and technology. Here we show a …
fundamental and practical interest in quantum science and technology. Here we show a …