Atomic memory keeps distant ions entangled for about 10 seconds
Researchers at the University of Oxford have successfully maintained quantum entanglement between distant ions for approximately 10 seconds using a trapped-ion network. This advancement in quantum memory is a critical step toward building scalable, secure quantum communication networks.
Why it matters
Extending the duration of quantum entanglement is essential for the practical implementation of quantum internet and secure data transmission systems.
edited by Sadie Harley , reviewed by Robert Egan
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Add to Preferred Sources An artist's impression of the experiment: strontium and calcium ions in two separate network nodes share entanglement—celebrated here with a quantum dance party. Credit: Nicolás Castañeda. Quantum networks, systems that connect devices and allow them to exchange information encoded in the quantum states of particles, could enable more secure communications. To build these networks, physicists need to devise strategies that allow distant particles to share quantum states, preserving them long enough to perform calculations or enable communication between devices.
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