M16.00010. Independent State and Measurement Characterization on Quantum Computers

Presented by: Junan Lin


Correctly characterizing state preparation and measurement (SPAM) processes is a necessary step towards building reliable quantum computers. In this work, we derive a simple experimental procedure to separately estimate the SPAM error strengths on a QPU. After discussing principles behind the experimental design, we present the protocol along with an asymptotic bound for the uncertainty in the estimated parameters in terms of quantities that can be estimated independently of SPAM processes. We test this protocol on a publicly available 5-qubit quantum processor and discuss the applicability on near-term devices.


  • Junan Lin
  • Joel J. Wallman
  • Ian Hincks
  • Raymond Laflamme


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