Quantum Radar

Quantum Computing is about to upend our Digital Privacy, but I only just learned Quantum Algorithms will do the same for Military Stealth too…

Currently, stealth works in a couple of basic ways:

  1. Minimising the reflected radar signal.
  2. Sending back a fake signal.
  3. Messing with the electronic brain of the radar system (but this is more electronic warfare than stealth).

For a radar system, both 1 and 2 can be circumvented if there is someway for it to focus exclusively on the echoes from its own beam by filtering all the other photons. In this way, it can concentrate on the real target and ignore innocent but confusing background noise, and deliberate spoofing with fake signals.

Radars today try to filter out these false signals by focusing on specific frequency ranges and very precise timings, but clever EM warfare packages are able to spoof these techniques.

What the radar needs is a way to securely ‘tag’ its own photons, so that it can filter and ignore anything else…

Enter the Quantum Radar…

“Only a few of the photons sent out will be reflected back if they hit a stealth aircraft. A conventional radar wouldn’t be able to distinguish these returning photons from the mass of incoming signals created by natural phenomena—or by radar-jamming devices. But a quantum radar can check for evidence that incoming photons are entangled with the ones held back. Any that are must have originated at the radar station. This enables it to detect even the faintest of return signals in a mass of background noise.

Confused signals from target, environment and spoofing.

Background noise is filtered by quantum algorithms which only allow photons through if they are entangled with clones of the transmitted photons held in the radar’s ‘quantum memory’ .

The target is revealed.
However faint the real signal, it can never be swamped because only reflections from the radar station are considered.



Tech from Singularity’s Children: Solid State Aircraft

The ‘Sky-Whales’ and floating buildings in my Singularity’s Children books use the cool futuristic technology of Electro-Hydro-Dynamics. Instead of old-fashioned propellers batting the air with their silly paddles, an Electro-Hydro-Dynamic thruster employs electric fields to move negatively charged air to produce propulsive thrust…

This small demonstrator is claimed to be the first solid-stateheavier-than-air vehicle to successfully demonstrate this technique to fly untethered.

The same techniques can also be used to change the aerodynamics of an object by smoothing the airflow or deliberately ruffling it up to make the vehicle turn without using physical control surfaces. It can also slow the air being ingested by super-, or even hyper-sonic scram-jets, allowing planes to achieve orbital velocities within the atmosphere…

Both Russia (Ayaks) and the US (Aurora) are rumoured to have this tech flying.

I first came across this technology reading and watching videos from the ‘Lifter‘ community, which are cool, but do tend to drift towards the ‘UFO conspiracy theory’ end of the intellectual spectrum

Full video of the first flight:


Also interesting:

Techcrunch Article here:

Future Tech – Transport Tubes, 2018 Style

The Boring Company LA test tunnel is set for its December demo.

“The company’s tunnels will have Loop shuttles that can carry pedestrians, cyclists and even private vehicles at speeds reaching 150mph for as little as $1”

With limited surface area on this ball, it has always seemed crazy to me that we pave over the whole thing with ugly, dangerous, polluting, noisey roads…


Via Engadget