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Quantum logic at a distance

Hunger, David

Quantum computers could revolutionize how specific computational problems are solved that remain untractable even for the world’s best supercomputers. However, although the basic elements of a quantum computer—realizing a register of qubits that
preserve superposition states, controlling and reading out qubits individually, and performing quantum gates between them—have been scaled to a few dozen qubits, millions are needed to attack problems such as integer factorization. One approach for scaling
up quantum computers is to “divide and conquer”—keep individual processing units smaller and connect many of them together. This approach leaves local processing nodes tractable but requires generation of entanglement and performance of quantum gates on qubits located at distant nodes to keep the advantages of quantum processing. On page 614 of this issue, Daiss et al. (1) made substantial progress toward this goal by performing quantum-logic operations on two distant qubits in an elementary network.

Zugehörige Institution(en) am KIT Institut für Quantenmaterialien und -technologien (IQMT)
Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 02.2021
Sprache Englisch
Identifikator ISSN: 0036-8075, 1095-9203
KITopen-ID: 1000129435
Erschienen in Science
Verlag American Association for the Advancement of Science (AAAS)
Band 371
Heft 6529
Seiten 576
Vorab online veröffentlicht am 04.02.2021
Nachgewiesen in Scopus
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