Quantum teleportation: ’90% accuracy’ high-fidelity internet milestone 44 Km transfer achieved
A viable quantum internet by quantum teleportation—a network during which information stored in qubits is shared over long distances through entanglement—would transform the fields of knowledge storage, precision sensing and computing, introduction a replacement era of communication.
This month, scientists at Fermi National Accelerator Laboratory—a U.S. Department of Energy national laboratory affiliated with the University of Chicago—along with partners at five institutions took a big step within the direction of realizing a quantum internet.
In a paper published in PRX Quantum, the team presents for the primary time an indication of a sustained, long-distance teleportation of qubits made from photons (particles of light) with fidelity greater than 90%.
The qubits were teleported over a fiber-optic network 27 miles (44 kilometers) long using state-of-the-art single-photon detectors, also as off-the-shelf equipment.
“We’re thrilled by these results,” said Fermilab scientist Panagiotis Spentzouris, head of the Fermilab quantum science program and one among the paper’s co-authors. “This may be a key achievement on the thanks to building a technology which will redefine how we conduct global communication.”
The achievement comes just a couple of months after the U.S. Department of Energy unveiled its blueprint for a national quantum internet at a news conference at the University of Chicago.
Quantum teleportation may be a “disembodied” transfer of quantum states from one location to a different . The quantum teleportation of a qubit is achieved using quantum entanglement, during which two or more particles are inextricably linked to every other. If an entangled pair of particles is shared between two separate locations, regardless of the space between them, the encoded information is teleported.
The joint team—researchers at Fermilab, AT&T, Caltech, Harvard University , NASA reaction propulsion Laboratory and University of Calgary—successfully teleported qubits on two systems: the Caltech Quantum Network and therefore the Fermilab Quantum Network. The systems were designed, built, commissioned and deployed by Caltech’s public-private research program on Intelligent Quantum Networks and Technologies, or IN-Q-NET.
Both the Caltech and Fermilab networks, which feature near-autonomous processing , are compatible both with existing telecommunication infrastructure and with emerging quantum processing and storage devices. Researchers are using them to enhance the fidelity and rate of entanglement distribution, with a stress on complex quantum communication protocols and fundamental science.
The Chicagoland network, called the Illinois Express Quantum Network, is being designed by Fermilab together with Argonne National Laboratory, Caltech, Northwestern University and industry partners.
“The feat may be a testament to success of collaboration across disciplines and institutions, which drives such a lot of what we accomplish in science,” said Fermilab Deputy Director of Research Joe Lykken. “I commend the IN-Q-NET team and our partners in academia and industry on this first-of-its-kind achievement in quantum teleportation.