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Quantum-classical interface based on single flux quantum digital logic

delete2018-01-29
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R
R. McDermott *
V
Vavilov, M. G.
B
B. L. T. Plourde
W
Wilhelm, F. K.
L
Liebermann, P. J.
M
Mukhanov, O. A.
O
Ohki, T. A.
DOI:10.1088/2058-9565/aaa3a0delete
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Abstract

Abstract

En 中文
We describe an approach to the integrated control and measurement of a large-scale superconducting multiqubit array comprising up to 10(8) physical qubits using a proximal coprocessor based on the Single Flux Quantum (SFQ) digital logic family. Coherent control is realized by irradiating the qubits directly with classical bitstreams derived from optimal control theory. Qubit measurement is performed by a Josephson photon counter, which provides access to the classical result of projective quantum measurement at the millikelvin stage. We analyze the power budget and physical footprint of the SFQ coprocessor and discuss challenges and opportunities associated with this approach.
Keywords:
superconducting qubits
single flux quantum logic
surface code
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Quantum Science and Technology cover
Quantum Science and Technology
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