Nanoscale ‘conveyor belt’ teleports quantum state of electron

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06 May 2026 Nanoscale ‘conveyor belt’ teleports quantum state of electron Mobile quantum bits, which can be shuttled to where they are needed in a circuit, have been used to perform a quantum process called state teleportation. By Lars R. Schreiber ORCID: http://orcid.org/0000-0003-0904-9612 0 Lars R. Schreiber Lars R. Schreiber is at the JARA-FIT Institute for Quantum Information, Forschunsgzentrum Jülich GmbH and RWTH Aachen University, Aachen 52074, Germany, and at ARQUE Systems GmbH, Aachen 52074, Germany. View author publications PubMed Google Scholar

Practical quantum computers will require many millions of interacting quantum bits (qubits). This could, in principle, be achieved by using a property of electrons called spin as a qubit. Spin qubits must be located very close together, and the physical challenge of wiring them to the bulky external control hardware has so far limited quantum circuits to a dozen or fewer electron spin qubits1. But now, writing in Nature, Matsumoto et al.2 report a potential solution: a logical circuit in which two distant spin qubits are brought together using a silicon ‘conveyor belt’. This set-up promises more flexibility, less crowding and fewer errors than static spin-qubit circuits offer. The authors demonstrate their device by ‘teleporting’ a quantum state across the device, a distance of 320 nanometres.

doi: https://doi.org/10.1038/d41586-026-01157-9

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Competing Interests L.R.S. is a co-founder and shareholder of ARQUE Systems GmbH, which is developing computer chips based on electron spins in silicon. L.R.S is also an inventor on a number of patents on mobile spin-qubit technology.

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