Quantum State Engineering and Josephson Junctions:. Charge and Flux Detectors
Abstract
We discuss parameters that quantify efficiency of devices suggested as detectors of the quantum state of Josephson-junction charge and flux qubits. These parameters are used to compare various detectors. We estimate the dephasing rate by a turned-off detector and show that for a dc-SQUID and a SET it vanishes very fast at low temperatures, suggesting their possible use in experiments.
- Publication:
-
Foundations of Quantum Mechanics in the Light of New Technology ISQM-Tokyo 2001
- Pub Date:
- October 2002
- DOI:
- 10.1142/9789812776716_0003
- Bibcode:
- 2002fqml.conf...18M