Researchers at the U.S. Naval Research Laboratory (NRL) developed a new technique that could enable future advancements in quantum technology. The technique squeezes quantum dots, tiny particles made of thousands of atoms, to emit single photons (individual particles of light) with precisely the same color and with positions that can be less than a millionth of a meter apart.
In order for quantum dots to communicate (interact), they have to emit light at the same wavelength. The size of a quantum dot determines this emission wavelength. However, just as no two snowflakes are alike, no two quantum dots have exactly the same size and shape — at least when they’re initially created.
This natural variability makes it impossible for researchers to create quantum dots that emit light at precisely the same wavelength [color]. This breakthrough could accelerate the development of quantum information technologies and brain-inspired computing.
Source: Science Daily