• A Bi-CMOS electronic photonic integrated circuit quantum light detector

    From Jan Panteltje@21:1/5 to All on Thu May 30 04:56:58 2024
    World's smallest quantum light detector on a silicon chip
    https://www.sciencedaily.com/releases/2024/05/240517164111.htm
    Source:
    University of Bristol
    Summary:
    Researchers have made an important breakthrough in scaling quantum technology by integrating the world's tiniest quantum light detector onto a silicon chip.

    Interesting is the circuit, figure 1 in
    https://www.science.org/doi/10.1126/sciadv.adk6890

    the photo diodes dare used as pull-up and pull down to teh transistor base.

    Quantum talk everywhere,
    but interesting noise cancellation after the beam splitter.
    Anybody knows the basics of this?

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jeroen Belleman@21:1/5 to Jan Panteltje on Thu May 30 13:23:28 2024
    On 5/30/24 06:56, Jan Panteltje wrote:
    World's smallest quantum light detector on a silicon chip
    https://www.sciencedaily.com/releases/2024/05/240517164111.htm
    Source:
    University of Bristol
    Summary:
    Researchers have made an important breakthrough in scaling quantum technology by integrating the world's tiniest quantum light detector onto a silicon chip.

    Interesting is the circuit, figure 1 in
    https://www.science.org/doi/10.1126/sciadv.adk6890

    the photo diodes dare used as pull-up and pull down to teh transistor base.

    Quantum talk everywhere,
    but interesting noise cancellation after the beam splitter.
    Anybody knows the basics of this?

    The very first word of their abstract has a spelling error. That
    doesn't bode well for the rest.

    Anyway, it appears the quantum crowd is discovering the advantages
    of synchronous detection, as has been used for ages in lock-in
    amplifiers. They call it 'homodyne'. OK, fine.

    Jeroen Belleman

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Phil Hobbs@21:1/5 to Jeroen Belleman on Thu May 30 11:39:22 2024
    Jeroen Belleman <jeroen@nospam.please> wrote:
    On 5/30/24 06:56, Jan Panteltje wrote:
    World's smallest quantum light detector on a silicon chip
    https://www.sciencedaily.com/releases/2024/05/240517164111.htm
    Source:
    University of Bristol
    Summary:
    Researchers have made an important breakthrough in scaling quantum
    technology by integrating the world's tiniest quantum light detector onto a silicon chip.

    Interesting is the circuit, figure 1 in
    https://www.science.org/doi/10.1126/sciadv.adk6890

    the photo diodes dare used as pull-up and pull down to teh transistor base. >>
    Quantum talk everywhere,
    but interesting noise cancellation after the beam splitter.
    Anybody knows the basics of this?

    The very first word of their abstract has a spelling error. That
    doesn't bode well for the rest.

    Anyway, it appears the quantum crowd is discovering the advantages
    of synchronous detection, as has been used for ages in lock-in
    amplifiers. They call it 'homodyne'. OK, fine.

    Jeroen Belleman




    “Quantum detector” means a device that detects light one carrier pair per time, such as a photodiode or phototube. There are other sorts, e.g. microbolometers.

    Homodyne detection is just a word for an interferometer with no frequency shift. No woo-woo stuff, apart from photodection itself, which is deeply mysterious when you really think about it.

    Cheers

    Phil Hobbs

    --
    Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jeroen Belleman@21:1/5 to Phil Hobbs on Thu May 30 14:12:33 2024
    On 5/30/24 13:39, Phil Hobbs wrote:
    Jeroen Belleman <jeroen@nospam.please> wrote:
    On 5/30/24 06:56, Jan Panteltje wrote:
    World's smallest quantum light detector on a silicon chip
    https://www.sciencedaily.com/releases/2024/05/240517164111.htm
    Source:
    University of Bristol
    Summary:
    Researchers have made an important breakthrough in scaling quantum
    technology by integrating the world's tiniest quantum light detector onto a silicon chip.

    Interesting is the circuit, figure 1 in
    https://www.science.org/doi/10.1126/sciadv.adk6890

    the photo diodes dare used as pull-up and pull down to teh transistor base. >>>
    Quantum talk everywhere,
    but interesting noise cancellation after the beam splitter.
    Anybody knows the basics of this?

    The very first word of their abstract has a spelling error. That
    doesn't bode well for the rest.

    Anyway, it appears the quantum crowd is discovering the advantages
    of synchronous detection, as has been used for ages in lock-in
    amplifiers. They call it 'homodyne'. OK, fine.

    Jeroen Belleman




    “Quantum detector” means a device that detects light one carrier pair per time, such as a photodiode or phototube. There are other sorts, e.g. microbolometers.
    It was my understanding that all light detectors are quantum detectors,
    even bolometers. It's very clear in superconducting edge detectors.


    Homodyne detection is just a word for an interferometer with no frequency shift. No woo-woo stuff, apart from photodection itself, which is deeply mysterious when you really think about it.

    Cheers

    Phil Hobbs


    I'm not really surprised that interactions between waves and matter
    are quantized, but I'd love to find a classical argument to explain
    the value of Planck's constant.

    Jeroen Belleman

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to jeroen@nospam.please on Thu May 30 13:06:15 2024
    On a sunny day (Thu, 30 May 2024 13:23:28 +0200) it happened Jeroen Belleman <jeroen@nospam.please> wrote in <v39nfm$1lsdr$1@dont-email.me>:

    On 5/30/24 06:56, Jan Panteltje wrote:
    World's smallest quantum light detector on a silicon chip
    https://www.sciencedaily.com/releases/2024/05/240517164111.htm
    Source:
    University of Bristol
    Summary:
    Researchers have made an important breakthrough in scaling quantum technology by integrating the world's tiniest quantum
    light detector onto a silicon chip.

    Interesting is the circuit, figure 1 in
    https://www.science.org/doi/10.1126/sciadv.adk6890

    the photo diodes dare used as pull-up and pull down to teh transistor base. >>
    Quantum talk everywhere,
    but interesting noise cancellation after the beam splitter.
    Anybody knows the basics of this?

    The very first word of their abstract has a spelling error. That
    doesn't bode well for the rest.

    Anyway, it appears the quantum crowd is discovering the advantages
    of synchronous detection, as has been used for ages in lock-in
    amplifiers. They call it 'homodyne'. OK, fine.

    OK, that makes sense.Thank you,

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Phil Hobbs@21:1/5 to Jeroen Belleman on Thu May 30 12:20:20 2024
    Jeroen Belleman <jeroen@nospam.please> wrote:
    On 5/30/24 13:39, Phil Hobbs wrote:
    Jeroen Belleman <jeroen@nospam.please> wrote:
    On 5/30/24 06:56, Jan Panteltje wrote:
    World's smallest quantum light detector on a silicon chip
    https://www.sciencedaily.com/releases/2024/05/240517164111.htm
    Source:
    University of Bristol
    Summary:
    Researchers have made an important breakthrough in scaling quantum
    technology by integrating the world's tiniest quantum light detector
    onto a silicon chip.

    Interesting is the circuit, figure 1 in
    https://www.science.org/doi/10.1126/sciadv.adk6890

    the photo diodes dare used as pull-up and pull down to teh transistor base.

    Quantum talk everywhere,
    but interesting noise cancellation after the beam splitter.
    Anybody knows the basics of this?

    The very first word of their abstract has a spelling error. That
    doesn't bode well for the rest.

    Anyway, it appears the quantum crowd is discovering the advantages
    of synchronous detection, as has been used for ages in lock-in
    amplifiers. They call it 'homodyne'. OK, fine.

    Jeroen Belleman




    “Quantum detector” means a device that detects light one carrier pair per
    time, such as a photodiode or phototube. There are other sorts, e.g.
    microbolometers.
    It was my understanding that all light detectors are quantum detectors,
    even bolometers. It's very clear in superconducting edge detectors.


    Homodyne detection is just a word for an interferometer with no frequency
    shift. No woo-woo stuff, apart from photodection itself, which is deeply
    mysterious when you really think about it.

    Cheers

    Phil Hobbs


    I'm not really surprised that interactions between waves and matter
    are quantized, but I'd love to find a classical argument to explain
    the value of Planck's constant.

    Jeroen Belleman



    Superconducting bolometers are different beasts Normal ones respond to
    the total incident power rather than the rate of detection events.

    At bottom, the interaction between light and matter is quantized, of
    course, but the distinction between quantum detectors and other sorts is a useful one.

    Cheers

    Phil Hobbs



    --
    Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics

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    * Origin: fsxNet Usenet Gateway (21:1/5)