Snapshot hyperspectral imaging with quantum correlated photons

Abstract

Hyperspectral imaging (HSI) has a wide range of applications from environmental monitoring to biotechnology. Conventional snapshot HSI techniques generally require a trade-off between spatial and spectral resolution and are thus limited in their ability to achieve high resolutions in both simultaneously. Most techniques are also resource inefficient with most of the photons lost through spectral filtering. Here, we demonstrate a proof-of-principle snapshot HSI technique utilizing the strong spectro-temporal correlations inherent in entangled photons using a modified quantum ghost spectroscopy system, where the target is directly imaged with one photon and the spectral information gained through ghost spectroscopy from the partner photon. As only a few rows of pixels near the edge of the camera are used for the spectrometer, effectively no spatial resolution is sacrificed for spectral. Also since no spectral filtering is required, all photons contribute to the HSI process making the technique much more resource efficient.

A comparison between the measurement of quantum spatial correlations using qCMOS photon-number resolving and electron multiplying CCD camera technologies

“…An event driven, single-photon sensitive, time-tagging camera based on CMOS technology incorporating an intensifier has also been developed as an alternative to ICCD and SPAD array detectors 69,70 . This form of detector has also been used to characterise spatial correlations and entanglement [71][72][73][74][75][76][77][78] and perform quantum imaging 79,80 .…”

Kilohertz volumetric imaging of in-vivo dynamics using squeezed light field microscopy

“…Computational imaging mitigates this trade-off by encoding high-dimensional information, such as depth 9 , time 10 , and spectra [11][12][13] , into two-dimensional (2D) multiplexed camera measurements. Among these techniques, light-field microscopy (LFM) excelled in various biological applications, including observation of neural activity in freely moving animals [14][15][16] and visualization of hemodynamics in the brain 17 and heart [18][19][20] .…”

Quantum Ghost Imaging Spectrometer

“…Spatial and spectral effects, however, are present simultaneously; 36 thus, the same system lends itself to build an imaging spectrometer that record spectral and spatial information from remote at once. 37 A first step in this direction has been taken in multispectral quantum imaging: 38 spectral correlations are used in order to determine the frequency, while imaging is performed conventionally.…”