Light used to detect quantum information stored in 100,000 nuclear quantum bits

Phys.orgĀ  February 15, 2021
An international team of researchers (UK, France) injected a ‘needle’ of highly fragile quantum information in a ‘haystack’ of 100,000 nuclei. By using lasers to control an electron, they could use that electron to control the behavior of the haystack, making it easier to find the needle. By controlling the collective state of the 100,000 nuclei, they were able to detect the existence of the quantum information as a ‘flipped quantum bit’ at an ultra-high precision of 1.9 parts per million: enough to see a single bit flip in the cloud of nuclei. Using this technique, the researchers are able to send information to the quantum bit and ‘listen in’ on what the spins are saying with minimal disturbance, down to the fundamental limit set by quantum mechanics. Their next step will be to demonstrate the storage and retrieval of an arbitrary quantum bit from the nuclear spin register…read more. TECHNICAL ARTICLE

Quantum sensing with single magnon precision. Credit: Nature Physics (2021)

Posted in Quantum communication and tagged , , .

Leave a Reply