Readout methods and devices for Josephson-junction-based solid-state qubits
Journal article, 2006

We discuss the current situation concerning measurement and readout of Josephson-junction based qubits. In particular, we focus attention on dispersive low-dissipation techniques involving reflection of radiation from an oscillator circuit coupled to a qubit, allowing single-shot determination of the state of the qubit. In particular, we develop a formalism describing a charge qubit read out by measuring its effective (quantum) capacitance. To exemplify, we also give explicit formulas for the readout time.

Author

Göran Johansson

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Lars Tornberg

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Vitaly Shumeiko

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Göran Wendin

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Journal of Physics Condensed Matter

0953-8984 (ISSN)

Vol. 18 21 S901-S920 S14

Subject Categories

Inorganic Chemistry

Atom and Molecular Physics and Optics

Condensed Matter Physics

DOI

10.1088/0953-8984/18/21/S14

More information

Latest update

9/7/2018 8