Harvard-led team runs algorithms on up to 48 logical qubits made of atoms

Why it matters

It moved error protection from one or two logical qubits to whole algorithms; Harvard called it the first demonstration of large-scale algorithms on an error-corrected quantum computer.

Sources (3)

• Nature Logical quantum processor based on reconfigurable atom arrays
  Primary sourceDec 6, 2023

  “Here we report the realization of a programmable quantum processor based on encoded logical qubits operating with up to 280 physical qubits.”

• Harvard Gazette Harvard researchers create first logical quantum processor
  Primary sourceDec 8, 2023

  “The team, led by Mikhail Lukin, the Joshua and Beth Friedman University Professor in physics and co-director of the Harvard Quantum Initiative, has created the first programmable, logical quantum processor, capable of encoding up to 48 logical qubits, and executing hundreds of logical gate operations, a vast improvement over prior efforts.”

• The Quantum Insider Harvard, QuEra, MIT and the NIST/University of Maryland Usher in New Era of Quantum Computing by Performing Complex, Error-Corrected Quantum Algorithms on 48 Logical Qubits
  Independent coverageDec 6, 2023

  “The researchers successfully executed large-scale algorithms on an error-corrected quantum computer with 48 logical qubits and hundreds of entangling logical operations.”