Communications of the ACM
Quantum Teleportation on a Chip
An international team of researchers have integrated the core circuits of quantum teleportation into a photonic chip.
Credit: University of Bristol News
An international team of researchers have successfully integrated the core circuits of quantum teleportation, which generate and detect quantum entanglement, into a photonic chip, a breakthrough they say could lead to the development of ultra-high-speed quantum computers and strengthen the security of communications.
In 2013, University of Tokyo researchers succeeded in realizing perfect quantum teleportation, but it required a system covering several square meters, took many months to build, and reached its limit in terms of scalability.
However, University of Bristol researchers say they have integrated those optical circuits onto a silicon microchip measuring just a few millimeters using state-of-the-art nano-fabrication methods. The Bristol researchers say their experiment marks the first demonstration of quantum teleportation on a silicon chip and note the result has solved the problem of scalability.
The discovery could be a significant step toward the ultimate goal of integrating a quantum computer into a photonic chip.
The implementation of teleportation onto a microchip is an important building block unlocking the potential for practical quantum technologies, according to the researchers. "Being able to replicate an optical circuit, which would normally require a room-sized optical table on a photonic chip, is a hugely significant achievement," says Bristol professor Jeremy O'Brien.
From University of Bristol News
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