Advanced Search

Query:

Fill in the form and click »Search«...

Format:

Display: entries per page entries

Zbl 1124.81007
Hines, C.; Jacobs, K.; Wang, J.B.
Readout of solid-state charge qubits using a single-electron pump. (English)
[J] J. Phys. A, Math. Theor. 40, No. 27, F617-F620 (2007). ISSN 1751-8113; ISSN 1751-8121/e

Summary: 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 tunnelling of a ballistic electron produced by a single-electron pump. We treat the measurement interaction in detail by modelling 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 a high accuracy.

MSC 2000:: *81P68 Quantum computation and quantum cryptography
82D20 Solids
81P15 Quantum measurement theory

Comment on this Item PDF MathML XML ASCII DVI PS BibTeX Online Ordering Article Journal

	Scientific prize winners of the ICM 2010
	Overhang
	Lie groups, physics and geometry. An introduction for physicists, engineers and chemists.

Advanced Search

Zentralblatt MATH Berlin [Germany]