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Trapped Ion Quantum Computing
Readout of solid-state charge qubits using a single-electron pump
arXiv
Authors: C. Hines, K. Jacobs, J. B. Wang
Year
2007
Paper ID
50280
Status
Preprint
Abstract Read
~2 min
Abstract Words
105
Citations
N/A
Abstract
A major difficulty in realizing a solid-state quantum computer is the reliable measurement of the states of the quantum registers. In this paper, we propose an efficient readout scheme making use of the resonant tunneling of a ballistic electron produced by a single electron pump. We treat the measurement interaction in detail by modeling the full spatial configuration, and show that for pumped electrons with suitably chosen energy the transmission coefficient is very sensitive to the qubit state. We further show that by using a short sequence of pumping events, coupled with a simple feedback control procedure, the qubit can be measured with high accuracy.
Why This Paper Matters
- This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
- It adds a 2007 reference point for readers tracking recent quantum research.
- A major difficulty in realizing a solid-state quantum computer is the reliable measurement of the states of the quantum registers.
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