Universal control of a six-qubit quantum processor in silicon.

ABSTRACT: Future quantum computers capable of solving relevant problems will require a large number of qubits that can be operated reliably¹. However, the requirements of having a large qubit count and operating with high fidelity are typically conflicting. Spins in semiconductor quantum dots show long-term promise^2,3 but demonstrations so far use between one and four qubits and typically optimize the fidelity of either single- or two-qubit operations, or initialization and readout^4-11. Here, we increase the number of qubits and simultaneously achieve respectable fidelities for universal operation, state preparation and measurement. We design, fabricate and operate a six-qubit processor with a focus on careful Hamiltonian engineering, on a high level of abstraction t

SUBMITTER: Philips SGJ 

PROVIDER: S-EPMC9519456 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature