Tunability of a 2e periodic single Cooper pair box
Journal article, 2004

We have measured the fully 2e periodic Coulomb staircase of a single Cooper pair box (SCB) in superconducting quantum interference design geometry, using a radio-frequency single-electron transistor. We have determined the energies of the SCB with microwave spectroscopy and compared the calculated shape of the Coulomb staircases to the measured staircases. We find excellent agreement as the Josephson coupling energy is tuned by an external magnetic field.

difference

josephson-junction

electron transistor

charge

Macroscopic quantum states

superconductor

Author

David Gunnarsson

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

Tim Duty

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

Kevin Bladh

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

Per Delsing

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

Physical Review B

Vol. 70 22 224523-

Subject Categories

Physical Sciences

More information

Created

10/7/2017