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Photon detection
A new "quantum radar" device uses entangled microwaves to overcome some of the limitations of traditional radar systems.
The device, built by a team from the Austrian Institute of Science and Technology, is able to detect objects at lower temperatures and with less background noise than existing radars, according to the same source. Review of MIT technology. However, researchers believe that the low energy levels of the quantum radar could lead to better non-invasive medical imaging techniques or more discreet military technology.
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The thing behind this new radar is to use a quantum entanglement instead of the radio waves used in the radar. This allows the device to use less power to detect nearby objects than conventional radar, according to the team's research, which was published on the pre-print server. ArXiv earlier this month.
Although reflecting and detecting photons as they bounce off the object they discover destroys quantum entanglement, MIT Technical Reviewphotons are still associated with each other with sufficient force to be discernible from the background light in the area.
As a result, the quantum radar was able to detect objects at room temperature in an ambient-temperature environment – a capability that escapes conventional high-energy radar systems.
READ MORE: Quantum radar has been shown for the first time[[[[Review of MIT technology]
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