Quantum imaging and metrology with undetected photons: tutorial

G Barreto Lemos, M Lahiri, S Ramelow… - Journal of the Optical …, 2022 - opg.optica.org
We present a tutorial on the phenomenon of induced coherence without induced emission,
and specifically its application to imaging and metrology. It is based on a striking effect …

Quantum Metrology in the Noisy Intermediate‐Scale Quantum Era

L Jiao, W Wu, SY Bai, JH An - Advanced Quantum …, 2023 - Wiley Online Library
Quantum metrology pursues the physical realization of higher‐precision measurements to
physical quantities than the classically achievable limit by exploiting quantum features, such …

Optimal generators for quantum sensing

JT Reilly, JD Wilson, SB Jäger, C Wilson, MJ Holland - Physical Review Letters, 2023 - APS
We propose a computationally efficient method to derive the unitary evolution that a
quantum state is most sensitive to. This allows one to determine the optimal use of an …

Interaction-free, single-pixel quantum imaging with undetected photons

Y Yang, H Liang, X Xu, L Zhang, S Zhu… - npj Quantum Information, 2023 - nature.com
A typical imaging scenario requires three basic ingredients:(1) a light source that emits light,
which in turn interacts and scatters off the object of interest;(2) detection of the light being …

Nonlinear interferometry for quantum-enhanced measurements of multiphoton absorption

S Panahiyan, CS Muñoz, MV Chekhova, F Schlawin - Physical Review Letters, 2023 - APS
Multiphoton absorption is of vital importance in many spectroscopic, microscopic, or
lithographic applications. However, given that it is an inherently weak process, the detection …

Loss-tolerant and quantum-enhanced interferometer by reversed squeezing processes

L Tian, W Yao, Y Wu, Q Wang, H Shen, Y Zheng… - Optics Letters, 2023 - opg.optica.org
Reversed nonlinear dynamics is predicted to be capable of enhancing the quantum sensing
in unprecedented ways. Here, we report the experimental demonstration of a loss-tolerant …

Adaptive protocols for SU (1, 1) interferometers to achieve ab initio phase estimation at the Heisenberg limit

M Liu, L Zhang, H Miao - New Journal of Physics, 2023 - iopscience.iop.org
The precision of phase estimation with interferometers can be greatly enhanced using non-
classical quantum states, and the SU (1, 1) interferometer is an elegant scheme, which …

Quantum squeezing enhancement based on phase-sensitive cascaded four-wave mixing processes

Y Lou, Y Chen, J Wang, S Liu, J Jing - Science China Physics, Mechanics …, 2023 - Springer
Quantum squeezing is an important quantum resource for quantum metrology as it can
improve the measurement precision. By enhancing the quantum squeezing level, the …

Intramode-correlation–enhanced simultaneous multiparameter-estimation precision

S Chang, W Ye, X Rao, J Wen, H Zhang, Q Gong… - Physical Review A, 2022 - APS
The multiparameter estimation in quantum metrology is significant for a large number of
applications for quantum information tasks. Nevertheless, how mode correlations affect the …

Phase sensitivity improvement in correlation-enhanced nonlinear interferometers

X Liang, Z Yu, CH Yuan, W Zhang, L Chen - Symmetry, 2022 - mdpi.com
Interferometers are widely used as sensors in precision measurement. Compared with a
conventional Mach–Zehnder interferometer, the sensitivity of a correlation-enhanced …