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  1. Article ; Online: Quantifying high-dimensional spatial entanglement with a single-photon-sensitive time-stamping camera.

    Courme, Baptiste / Vernière, Chloé / Svihra, Peter / Gigan, Sylvain / Nomerotski, Andrei / Defienne, Hugo

    Optics letters

    2023  Volume 48, Issue 13, Page(s) 3439–3442

    Abstract: High-dimensional entanglement is a promising resource for quantum technologies. Being able to certify it for any quantum state is essential. However, to date, experimental entanglement certification methods are imperfect and leave some loopholes open. ... ...

    Abstract High-dimensional entanglement is a promising resource for quantum technologies. Being able to certify it for any quantum state is essential. However, to date, experimental entanglement certification methods are imperfect and leave some loopholes open. Using a single-photon-sensitive time-stamping camera, we quantify high-dimensional spatial entanglement by collecting all output modes and without background subtraction, two critical steps on the route toward assumptions-free entanglement certification. We show position-momentum Einstein-Podolsky-Rosen (EPR) correlations and quantify the entanglement of formation of our source to be larger than 2.8 along both transverse spatial axes, indicating a dimension higher than 14. Our work overcomes important challenges in photonic entanglement quantification and paves the way toward the development of practical quantum information processing protocols based on high-dimensional entanglement.
    MeSH term(s) Motion ; Photons
    Language English
    Publishing date 2023-06-30
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4794
    ISSN (online) 1539-4794
    DOI 10.1364/OL.487182
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: High speed imaging of spectral-temporal correlations in Hong-Ou-Mandel interference.

    Zhang, Yingwen / England, Duncan / Nomerotski, Andrei / Sussman, Benjamin

    Optics express

    2021  Volume 29, Issue 18, Page(s) 28217–28227

    Abstract: In this work we demonstrate spectral-temporal correlation measurements of the Hong-Ou-Mandel (HOM) interference effect with the use of a spectrometer based on a photon-counting camera. This setup allows us to take, within seconds, spectral temporal ... ...

    Abstract In this work we demonstrate spectral-temporal correlation measurements of the Hong-Ou-Mandel (HOM) interference effect with the use of a spectrometer based on a photon-counting camera. This setup allows us to take, within seconds, spectral temporal correlation measurements on entangled photon sources with sub-nanometer spectral resolution and nanosecond timing resolution. Through post processing, we can observe the HOM behaviour for any number of spectral filters of any shape and width at any wavelength over the observable spectral range. Our setup also offers great versatility in that it is capable of operating at a wide spectral range from the visible to the near infrared and does not require a pulsed pump laser for timing purposes. This work offers the ability to gain large amounts of spectral and temporal information from a HOM interferometer quickly and efficiently and will be a very useful tool for many quantum technology applications and fundamental quantum optics research.
    Language English
    Publishing date 2021-09-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.432191
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: 3D velocity map imaging of electrons with TPX3CAM.

    Cheng, Chuan / Moğol, Gönenç / Weinacht, Thomas / Nomerotski, Andrei / Trallero-Herrero, Carlos

    The Review of scientific instruments

    2022  Volume 93, Issue 1, Page(s) 13003

    Abstract: We demonstrate three-dimensional velocity map imaging of low energy electrons using a TPX3CAM, where the three-dimensional momentum information [ ... ...

    Abstract We demonstrate three-dimensional velocity map imaging of low energy electrons using a TPX3CAM, where the three-dimensional momentum information [p
    Language English
    Publishing date 2022-02-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/5.0071804
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  4. Article ; Online: Fluorescence Lifetime Macro Imager for Biomedical Applications.

    Sen, Rajannya / Zhdanov, Alexander V / Devoy, Ciaran / Tangney, Mark / Hirvonen, Liisa M / Nomerotski, Andrei / Papkovsky, Dmitri B

    Journal of visualized experiments : JoVE

    2023  , Issue 194

    Abstract: This paper presents a new photoluminescence lifetime imager designed to map the molecular oxygen (O2) concentration in different phosphorescent samples ranging from solid-state, O2-sensitive coatings to live animal tissue samples stained with soluble O2- ... ...

    Abstract This paper presents a new photoluminescence lifetime imager designed to map the molecular oxygen (O2) concentration in different phosphorescent samples ranging from solid-state, O2-sensitive coatings to live animal tissue samples stained with soluble O2-sensitive probes. In particular, the nanoparticle-based near-infrared probe NanO2-IR, which is excitable with a 625 nm light-emitting diode (LED) and emits at 760 nm, was used. The imaging system is based on the Timepix3 camera (Tpx3Cam) and the opto-mechanical adaptor, which also houses an image intensifier. O2 phosphorescence lifetime imaging microscopy (PLIM) is commonly required for various studies, but current platforms have limitations in their accuracy, general flexibility, and usability. The system presented here is a fast and highly sensitive imager, which is built on an integrated optical sensor and readout chip module, Tpx3Cam. It is shown to produce high-intensity phosphorescence signals and stable lifetime values from surface-stained intestinal tissue samples or intraluminally stained fragments of the large intestine and allows the detailed mapping of tissue O2 levels in about 20 s or less. Initial experiments on the imaging of hypoxia in grafted tumors in unconscious animals are also presented. We also describe how the imager can be re-configured for use with O2-sensitive materials based on Pt-porphyrin dyes using a 390 nm LED for the excitation and a bandpass 650 nm filter for emission. Overall, the PLIM imager was found to produce accurate quantitative measurements of lifetime values for the probes used and respective two-dimensional maps of the O2 concentration. It is also useful for the metabolic imaging of ex vivo tissue models and live animals.
    MeSH term(s) Animals ; Fluorescence ; Hypoxia ; Oxygen/metabolism ; Intestines ; Diagnostic Imaging
    Chemical Substances Oxygen (S88TT14065)
    Language English
    Publishing date 2023-04-07
    Publishing country United States
    Document type Journal Article ; Video-Audio Media ; Research Support, Non-U.S. Gov't
    ZDB-ID 2259946-0
    ISSN 1940-087X ; 1940-087X
    ISSN (online) 1940-087X
    ISSN 1940-087X
    DOI 10.3791/64321
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Counting of Hong-Ou-Mandel Bunched Optical Photons Using a Fast Pixel Camera.

    Nomerotski, Andrei / Keach, Michael / Stankus, Paul / Svihra, Peter / Vintskevich, Stephen

    Sensors (Basel, Switzerland)

    2020  Volume 20, Issue 12

    Abstract: The uses of a silicon-pixel camera with very good time resolution (∼nanosecond) for detecting multiple, bunched optical photons is explored. We present characteristics of the camera and describe experiments proving its counting capabilities. We use a ... ...

    Abstract The uses of a silicon-pixel camera with very good time resolution (∼nanosecond) for detecting multiple, bunched optical photons is explored. We present characteristics of the camera and describe experiments proving its counting capabilities. We use a spontaneous parametric down-conversion source to generate correlated photon pairs, and exploit the Hong-Ou-Mandel (HOM) interference effect in a fiber-coupled beam splitter to bunch the pair onto the same output fiber. It is shown that the time and spatial resolution of the camera enables independent detection of two photons emerging simultaneously from a single spatial mode.
    Language English
    Publishing date 2020-06-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s20123475
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  6. Article ; Online: Ion Microscope Imaging Mass Spectrometry Using a Timepix3-Based Optical Camera.

    Wood, Daniel / Burleigh, Robert J / Smith, Natasha / Bortoletto, Daniela / Brouard, Mark / Burt, Michael / Nomerotski, Andrei / Plackett, Richard / Shipsey, Ian

    Journal of the American Society for Mass Spectrometry

    2022  Volume 33, Issue 12, Page(s) 2328–2332

    Abstract: Ion microscopy allows for high-throughput mass spectrometry imaging. In order to resolve congested mass spectra, a high degree of timing precision is required from the microscope detector. In this paper we present an ion microscope mass spectrometer that ...

    Abstract Ion microscopy allows for high-throughput mass spectrometry imaging. In order to resolve congested mass spectra, a high degree of timing precision is required from the microscope detector. In this paper we present an ion microscope mass spectrometer that uses a Timepix3 hybrid pixel readout with an optimal 1.56 ns resolution. A novel triggering technique is also employed to remove the need for an external time-to-digital converter (TDC) and allow the experiment to be performed using a low-cost and commercially available readout system. Results obtained from samples of rhodamine B demonstrate the application of multimass imaging sensors for microscope mass spectrometry imaging with high mass resolution.
    MeSH term(s) Microscopy
    Language English
    Publishing date 2022-11-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1073671-2
    ISSN 1879-1123 ; 1044-0305
    ISSN (online) 1879-1123
    ISSN 1044-0305
    DOI 10.1021/jasms.2c00223
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4618: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (2.OG)
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    Zs.MO 241: Show issues

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  7. Article ; Online: A simple approach for characterizing the spatially varying sensitivity of microchannel plate detectors.

    Aglagul, Denis / Kaufman, Brian / Cheng, Chuan / Weinacht, Thomas / Saule, Tobias / Trallero-Herrero, Carlos A / Nomerotski, Andrei

    The Review of scientific instruments

    2022  Volume 93, Issue 7, Page(s) 75108

    Abstract: We present a simple approach to characterize the spatial variation of the gain in microchannel plate (MCP) coupled to phosphor detectors using single electron or photon hits. The technique is easy to implement and general enough to be extended to other ... ...

    Abstract We present a simple approach to characterize the spatial variation of the gain in microchannel plate (MCP) coupled to phosphor detectors using single electron or photon hits. The technique is easy to implement and general enough to be extended to other kinds of detectors. We demonstrate the efficacy of the approach on both laboratory and Monte Carlo generated datasets. Furthermore, we use the approach to measure the variation in gain over time as the MCP is exposed to an increasing number of electrons.
    Language English
    Publishing date 2022-08-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/5.0092346
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    In stock of ZB MED Bonn / Germany

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  8. Article ; Online: Fast camera spatial characterization of photonic polarization entanglement.

    Ianzano, Christopher / Svihra, Peter / Flament, Mael / Hardy, Andrew / Cui, Guodong / Nomerotski, Andrei / Figueroa, Eden

    Scientific reports

    2020  Volume 10, Issue 1, Page(s) 6181

    Abstract: Scalable technologies to characterize the performance of quantum devices are crucial to creating large quantum networks and quantum processing units. Chief among the resources of quantum information processing is entanglement. Here we describe the full ... ...

    Abstract Scalable technologies to characterize the performance of quantum devices are crucial to creating large quantum networks and quantum processing units. Chief among the resources of quantum information processing is entanglement. Here we describe the full temporal and spatial characterization of polarization-entangled photons produced by Spontaneous Parametric Down Conversions using an intensified high-speed optical camera, Tpx3Cam. This novel technique allows for precise determination of Bell inequality parameters with minimal technical overhead, and for new characterization methods for the spatial distribution of entangled quantum information. The fast-optical camera could lead to multiple applications in Quantum Information Science, opening new perspectives for the scalability of quantum experiments.
    Language English
    Publishing date 2020-04-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-020-62020-z
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  9. Article ; Online: Photon counting phosphorescence lifetime imaging with TimepixCam.

    Hirvonen, Liisa M / Fisher-Levine, Merlin / Suhling, Klaus / Nomerotski, Andrei

    The Review of scientific instruments

    2017  Volume 88, Issue 1, Page(s) 13104

    Abstract: TimepixCam is a novel fast optical imager based on an optimized silicon pixel sensor with a thin entrance window and read out by a Timepix Application Specific Integrated Circuit. The 256 × 256 pixel sensor has a time resolution of 15 ns at a sustained ... ...

    Abstract TimepixCam is a novel fast optical imager based on an optimized silicon pixel sensor with a thin entrance window and read out by a Timepix Application Specific Integrated Circuit. The 256 × 256 pixel sensor has a time resolution of 15 ns at a sustained frame rate of 10 Hz. We used this sensor in combination with an image intensifier for wide-field time-correlated single photon counting imaging. We have characterised the photon detection capabilities of this detector system and employed it on a wide-field epifluorescence microscope to map phosphorescence decays of various iridium complexes with lifetimes of about 1 μs in 200 μm diameter polystyrene beads.
    Language English
    Publishing date 2017-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/1.4973717
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  10. Article ; Online: Developing a camera-based 3D momentum imaging system capable of 1 Mhits/s.

    Debrah, Duke A / Stewart, Gabriel A / Basnayake, Gihan / Nomerotski, Andrei / Svihra, Peter / Lee, Suk Kyoung / Li, Wen

    The Review of scientific instruments

    2020  Volume 91, Issue 2, Page(s) 23316

    Abstract: A camera-based three-dimensional (3D) imaging system with a superb time-of-flight (TOF) resolution and multi-hit capability was recently developed for electron/ion imaging [Lee et al. J. Chem. Phys. 141, 221101 (2014)]. In this work, we report further ... ...

    Abstract A camera-based three-dimensional (3D) imaging system with a superb time-of-flight (TOF) resolution and multi-hit capability was recently developed for electron/ion imaging [Lee et al. J. Chem. Phys. 141, 221101 (2014)]. In this work, we report further improvement of the event rate of the system by adopting an event-driven camera, Tpx3Cam, for detecting the 2D positions of electrons, while a high-speed digitizer provides highly accurate (∼30 ps) TOF information for each event at a rate approaching 1 Mhits/sec.
    Language English
    Publishing date 2020-02-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/1.5138731
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