First fully distributed GHZ state across a three-node network of individual atomic qubits, with fidelity bounds 0.841(17) to 0.881(17), entanglement rate 0.095(5)/s, and Mermin inequality violation closing the detection loophole.
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Helios achieves 98 qubits with single-qubit gate infidelity 2.5(1)×10^{-5}, two-qubit 7.9(2)×10^{-4}, and SPAM 4.8(6)×10^{-4}, enabling circuits beyond classical simulation.
A trapped-ion architecture based on LDPC codes and cat-state factories achieves 110 logical qubits and one million T gates per day using 2514 physical qubits, with estimates for Heisenberg model simulation on 100 sites in one month using 10000 qubits.
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Tripartite entanglement of remote atomic qubits
First fully distributed GHZ state across a three-node network of individual atomic qubits, with fidelity bounds 0.841(17) to 0.881(17), entanglement rate 0.095(5)/s, and Mermin inequality violation closing the detection loophole.
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Helios: A 98-qubit trapped-ion quantum computer
Helios achieves 98 qubits with single-qubit gate infidelity 2.5(1)×10^{-5}, two-qubit 7.9(2)×10^{-4}, and SPAM 4.8(6)×10^{-4}, enabling circuits beyond classical simulation.
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Fault-Tolerant Quantum Computing with Trapped Ions: The Walking Cat Architecture
A trapped-ion architecture based on LDPC codes and cat-state factories achieves 110 logical qubits and one million T gates per day using 2514 physical qubits, with estimates for Heisenberg model simulation on 100 sites in one month using 10000 qubits.