Ghost imaging as loss estimation: Quantum versus classical schemes
arXiv:2105.09728 · doi:10.1103/PhysRevA.105.013506
Abstract
Frequency correlations are a versatile and powerful tool which can be exploited to perform spectral analysis of objects whose direct measurement might be unfeasible. This is achieved through a so-called ghost spectrometer, that can be implemented with quantum and classical resources alike. While there are some known advantages associated to either choice, an analysis of their metrological capabilities has not yet been performed. Here we report on the metrological comparison between a quantum and a classical ghost spectrometer. We perform the estimation of the transmittivity of a bandpass filter using frequency-entangled photon pairs. Our results show that a quantum advantage is achievable, depending on the values of the transmittivity and on the number of frequency modes analyzed.
References in corpus (21)
- Quantum-enhanced measurements: beating the standard quantum limit
- Quantum metrology
- Correlated imaging, quantum and classical
- Two-photon "ghost" imaging with thermal light
- Quantum Imaging with Undetected Photons
- Experimental realization of sub-shot-noise quantum imaging
- Experimental realisation of quantum illumination
- Ghost imaging lidar via sparsity constraints
- A perspective on multiparameter quantum metrology: from theoretical tools to applications in quantum imaging
- Detection of sub-shot-noise spatial correlation in high-gain parametric down-conversion
- Quantum Reading of a Classical Digital Memory
- Ultrasensitive measurement of MEMS cantilever displacement sensitivity below the shot noise limit
- Realisation of the first sub shot noise wide field microscope
- Measurement of sub-shot-noise spatial correlations without subtraction of background
- Extraordinary optical transmission of multimode quantum correlations via localized surface plasmons
- Unbiased estimation of an optical loss at the ultimate quantum limit with twin-beams
- Heralded Source of Bright Multi-mode Mesoscopic Sub-Poissonian Light
- Imaging using quantum noise properties of light
- Transmittivity measurements by means of squeezed vacuum light
- Absolute calibration of photodetectors: photocurrent multiplication versus photocurrent subtraction
- Assessing frequency correlation through a distinguishability measurement