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 …
Bias in error-corrected quantum sensing
The sensitivity afforded by quantum sensors is limited by decoherence. Quantum error
correction (QEC) can enhance sensitivity by suppressing decoherence, but it has a side …
correction (QEC) can enhance sensitivity by suppressing decoherence, but it has a side …
Achieving metrological limits using ancilla-free quantum error-correcting codes
Quantum error correction (QEC) is theoretically capable of achieving the ultimate estimation
limits in noisy quantum metrology. However, existing quantum error-correcting codes …
limits in noisy quantum metrology. However, existing quantum error-correcting codes …
Continuous-variable quantum sensing of a dissipative reservoir
YD Sha, W Wu - Physical Review Research, 2022 - APS
We propose a continuous-variable quantum sensing scheme, in which a harmonic oscillator
is employed as the probe to estimate the parameters in the spectral density of a quantum …
is employed as the probe to estimate the parameters in the spectral density of a quantum …