Biological Microscopy with Undetected Photons

Búzás, András; Wolff, Elmar K.; Benedict, M. G.; Ormos, Pál; Dér, András

doi:10.1109/access.2020.3000740

Cited by 14 publications

(2 citation statements)

References 50 publications

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“…Following initial demonstrations, Shapiro et al argued that the use of non-classical light is not necessary to achieve the same result [8]. With that insight, classical analogs of undetected-photon imaging have been explored by using correlated beams, but with the added benefits of being able to work with higher photon numbers and more conventional components [9,10], opening a route to the development of faster and more practical imaging schemes.…”

Section: Introductionmentioning

confidence: 99%

Classical imaging with undetected photons using four-wave mixing in silicon core fibers

Huang¹,

Wu²,

Ren

et al. 2023

Photon. Res.

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Undetected-photon imaging allows for objects to be imaged in wavelength regions where traditional components are unavailable. Although first demonstrated using quantum sources, recent work has shown that the technique also holds with classical beams. To date, however, all the research in this area has exploited parametric down-conversion processes using bulk nonlinear crystals within free-space systems. Here, we demonstrate undetected-photon-based imaging using light generated via stimulated four-wave mixing within highly nonlinear silicon fiber waveguides. The silicon fibers have been tapered to have a core diameter of ∼ 915 nm to engineer the dispersion and reduce the insertion losses, allowing for tight mode confinement over extended lengths to achieve practical nonlinear conversion efficiencies ( ∼ − 30 dB ) with modest pump powers ( ∼ 48 mW ). Both amplitude and phase images are obtained using classically generated light, confirming the high degree of spatial and phase correlation of our system. The high powers ( > 10 nW ) and long coherence lengths ( > 4 km ) associated with our large fiber-based system result in high contrast and stable images.

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Section: Introductionmentioning

confidence: 99%

Classical imaging with undetected photons using four-wave mixing in silicon core fibers

Huang¹,

Wu²,

Ren

et al. 2023

Photon. Res.

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“…This has resulted in the implementation of 'folded' systems which use a double pass of a single nonlinear crystal [8][9][10][11], a seeded version of the experiment [12], an interferometer that uses two different nonlinear processes [13], and spectroscopy based on all fields passing stacked crystals [14]. This work continues to push the technology closer to real-world applications [15]. However, practical imaging systems will require tunability and flexibility in their sensitivity and dynamic range if they are to make a real impact.…”

Section: Introductionmentioning

confidence: 99%

Loss compensated and enhanced mid-infrared interaction-free sensing with undetected photons

Gemmell¹,

Flórez²,

Pearce³

et al. 2022

Preprint

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Sensing with undetected photons enables the measurement of absorption and phase shifts at wavelengths different from those detected. Here, we experimentally map the balance and loss parameter space in a non-degenerate nonlinear interferometer, showing the recovery of sensitivity despite internal losses at the detection wavelength. We further explore an interaction-free operation mode with a detector-to-sample incident optical power ratio of ¿200. This allows changes in attowatt levels of power at 3.4 µm wavelength to be detected at 1550 nm, immune to the level of thermal black-body background. This reveals an ultra-sensitive infrared imaging methodology capable of probing samples effectively 'in the dark'.

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Quantum Sensing with Extreme Light

et al. 2022

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Optical nonlinear conversion processes are ubiquitously applied to scientific as well as industrial tasks. In particular, nonlinear processes are employed to generate radiation in many frequency ranges. In plenty of these nonlinear processes, the generation of paired photons occurs -the so-called signal and idler photons. Although this type of generation has undergone a tremendous development over the last decades, either the generated signal or the idler radiation has been used experimentally. In contrast, novel quantum-based measurement principles enable the usage of both partners of the generated photon pairs based on their correlation. These measurement approaches have an enormous potential for future applications, as they allow to transfer information from one spectral range to another. In particular, spectral ranges where photon generation and detection is particularly challenging can benefit from this principle. Above all, these include the extreme frequency ranges, such as on the low-frequency side the mid to far infrared or even the terahertz spectral range, but also on the high-frequency side the ultraviolet or X-ray spectral range. In this review article, theoretical and experimental developments based on correlated biphotons are described specifically for the extreme spectral regions.

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Biological Microscopy with Undetected Photons

Cited by 14 publications

References 50 publications

Classical imaging with undetected photons using four-wave mixing in silicon core fibers

Classical imaging with undetected photons using four-wave mixing in silicon core fibers

Loss compensated and enhanced mid-infrared interaction-free sensing with undetected photons

Quantum Sensing with Extreme Light

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