Chinese Radar Developments - KLJ series and others

Regarding the The Drive article, I think it was a good description of quantum radar. It highlighted how it's not about teleportation, but the ability to cross check the received photons with entangled photons kept in the radar to reject noise. My main disagreement with it is that it alluded that quantum radars are large easy targets for SEAD, but really the technology has the potential for lower transmitting power and lower probability of detection.

What comes to some other claims thrown in the last few posts, I can assure you that microwave radiation is also composed of photons. Free travelling electrons are known as beta particles/radiation. Also, travel speed of photons in a medium other than vacuum depends on wavelength. This wavelength dependance of refractive index is what causes rainbows for example.

Electrons and photons are 2 entirely different things. Electrons are atomic particles and are therefore matter. Photons are energy packets that can also be seen as EM waves in their nature of duality.

SamuraiBlue said:

It states in the article;



So it's traveling through open air towards the object namely a stealth plane but photons cannot travel at microwave frequencies they travel in light frequencies, electrons travel in microwave frequencies thus the different carrier mediums.
Entangled photons can travel in light frequencies but it will only be in twins so you will not know what the photon had hit. Unless you have a massive amounts of cryogenic containers to contain each photons shoot all entangled photons in a matrix that can show size and shape to the observer and arrange the containers in the matrix you had shot then this so called quantum radar will not work.
As always bad journalism.

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*Facepalm* ALL EM waves are photons. Gamma rays, x rays, UV rays, visible light, infrared, microwaves, radio, etc are *all* photons of different energy levels. This is very basic physics.

I bet If Japan had those radars too (maybe in the next century), he wouldnt shit-talk about it.

Quickie said:

Electrons and photons are 2 entirely different things. Electrons are atomic particles and are therefore matter. Photons are energy packets that can also be seen as EM waves in their nature of duality.

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From the Quantum mechanics perspective electrons are also energy. All particles are waves and all waves are particles. You could in theory use entangled electrons to act as a sensor in the same way that the quantum radar described in the display uses photons, but electrons are subject to greater interference (owing in part to having electric charge), interact with surrounding matter too much, and don’t reflect back to their source as easily. In a parlance their scatter is difficult to manage and they require too much energy to project a great distance. That’s also why, amongst many other reasons we don’t use electrons for normal radar btw (also trying to do so would be like the equivalent of shooting electricity at an object to try to see it).

latenlazy said:

From the Quantum mechanics perspective electrons are also energy. All particles are waves and all waves are particles. You could in theory use entangled electrons to act as a sensor in the same way that the quantum radar described in the display uses photons, but electrons are subject to greater interference (owing in part to having electric charge), interact with surrounding matter too much, and don’t reflect back to their source as easily. In a parlance their scatter is difficult to manage and they require too much energy to project a great distance. That’s also why, amongst many other reasons we don’t use electrons for normal radar btw (also trying to do so would be like the equivalent of shooting electricity at an object to try to see it).

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"....electrons are also energy"

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That naturally comes from the principle of mass energy conversion since electrons have mass.

All particles are waves and all waves are particles.

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True to a certain extent. Although electrons have wave-like properties, it is not part of the Electro-magnetic wave spectrum.

Quickie said:

True to a certain extent. Although electrons have wave-like properties, it is not part of the Electro-magnetic wave spectrum.

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Electrons don’t just have wave like properties. They are in effect, at the quantum level, waves, but all matter is. I’m being pedantic here, but an electron being matter is not the primary difference between a photon and an electron.

latenlazy said:

Electrons don’t just have wave like properties. They are in effect, at the quantum level, waves, but all matter is. I’m being pedantic here, but an electron being matter is not the primary difference between a photon and an electron.

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Going by the definition of what matter is, and electron being the building blocks of matter, this already makes it very different from photons.

Protons, neutrons, electrons are based on fermions. Going further down, you have quarks and leptons where they still fit a certain definition of matter.

Quickie said:

Protons, neutrons, electrons are based on fermions. Going further down, you have quarks and leptons where they still fit a certain definition of matter.

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Protons, neutrons are not in the Standard model. They are composite particles (quarks). Electrons however ARE leptons like Muons and Taus.

Fermions include Quarks and Leptons, so an electron is also a Fermion.

"A fermion can be an , such as the , or it can be a , such as the . "