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Optimizing microwave photodetection: input-output theory

delete2018-03-05
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M
Marius Schöndorf *
G
Govia, L. C. G.
V
Vavilov, M. G.
R
R. McDermott
W
Wilhelm, F. K.
DOI:10.1088/2058-9565/aaa7f7delete
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Abstract

Abstract

En 中文
High fidelity microwave photon counting is an important tool for various areas from background radiation analysis in astronomy to the implementation of circuit quantum electrodynamic architectures for the realization of a scalable quantum information processor. In this work we describe a microwave photon counter coupled to a semi-infinite transmission line. We employ input-output theory to examine a continuously driven transmission line as well as traveling photon wave packets. Using analytic and numerical methods, we calculate the conditions on the system parameters necessary to optimize measurement and achieve high detection efficiency. With this we can derive a general matching condition depending on the different system rates, under which the measurement process is optimal.
Keywords:
microwave photon detection
superconducting qubits
quantum information
microwave engineering
Josephson photomultiplier
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Quantum Science and Technology cover
Quantum Science and Technology
IF:
5
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University of Wisconsin System cover
University of Wisconsin System
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Saarland University
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