Title
Independent, extensible control of same-frequency superconducting qubits by selective broadcasting
Author
Asaad, S.
Dickel, C.
Langford, N.K.
Poletto, S.
Bruno, A.
Rol, M.A.
Deurloo, D.
DiCarlo, L.
Publication year
2016
Abstract
A critical ingredient for realising large-scale quantum information processors will be the ability to make economical use of qubit control hardware. We demonstrate an extensible strategy for reusing control hardware on same-frequency transmon qubits in a circuit QED chip with surface-code-compatible connectivity. A vector switch matrix enables selective broadcasting of input pulses to multiple transmons with individual tailoring of pulse quadratures for each, as required to minimise the effects of leakage on weakly anharmonic qubits. Using randomised benchmarking, we compare multiple broadcasting strategies that each pass the surface-code error threshold for single-qubit gates. In particular, we introduce a selective broadcasting control strategy using five pulse primitives, which allows independent, simultaneous Clifford gates on arbitrary numbers of qubits.
Subject
Observation, Weapon & Protection Systems
RT - Radar Technology
TS - Technical Sciences
High Tech Systems & Materials
Electronics
Industrial Innovation
To reference this document use:
http://resolver.tudelft.nl/uuid:37f35de6-de6b-498b-af1a-c14647354569
TNO identifier
562907
Publisher
Nature
Source
NPJ Quantum Information
Document type
article