Ultimate quantum sensitivity in the 3D relative localisation of two single-photon emitters via two-photon interference
arXiv:2504.16294 · doi:10.1140/epjp/s13360-025-07257-1
Abstract
We present a quantum sensing protocol for the simultaneous estimation of the difference in the localization parameters of two single-photon sources, paving the way to single-photon 3D imaging and 3D nanoscopy beyond the diffraction limit. This is achieved by exploiting two-photon interference of the two emitted photons at a beam splitter via sampling measurements in the frequency and transverse momenta at the output. We prove theoretically that this technique reaches the ultimate sensitivity in the 3D relative localization of two emitters, already with a number of sampling measurements of 1000 and a bias in the three localization parameters below 1%. These results are independent of the values of the localization parameters to estimate.
References in corpus (19)
- Review article: Linear optical quantum computing
- Quantum Fisher information matrix and multiparameter estimation
- Experimental Demonstration of Blind Quantum Computing
- An Overview of Depth Cameras and Range Scanners Based on Time-of-Flight Technologies
- Measurement-device-independent quantum key distribution over 200 km
- Attosecond-Resolution Hong-Ou-Mandel Interferometry
- Experimental Passive Round-Robin Differential Phase-Shift Quantum Key Distribution
- Hong-Ou-Mandel interferometry on a biphoton beat note
- Spectral Correlation Measurements at the Hong-Ou-Mandel Interference Dip
- Bounds on Quantum Multiple-Parameter Estimation with Gaussian State
- Spectrally resolved Hong-Ou-Mandel interference between independent sources
- Tracking the polarisation state of light via Hong-Ou-Mandel interferometry
- Parameter estimation of time and frequency shifts with generalized HOM interferometry
- Ultimate quantum sensitivity in the estimation of the delay between two interfering photons through frequency-resolving sampling
- Estimation with ultimate quantum precision of the transverse displacement between two photons via two-photon interference sampling measurements
- Fast quantum interferometry at the nanometer and attosecond scales with energy-entangled photons
- Superresolution imaging of two incoherent sources via two-photon interference sampling measurements in the transverse momenta
- Quantum-limited estimation of the frequency shift between two interfering photons by time sampling of their quantum beats
- IGAF: Incremental Guided Attention Fusion for Depth Super-Resolution