Quantized current and voltage sources based on non-adiabatic charge pumping

Add to your list(s) Download to your calendar using vCal

• Dr Bernd Kaestner, PTB Braunschweig
• Monday 10 October 2011, 14:15-16:00
• Mott Seminar Room, Cavendish Laboratory, Department of Physics.

If you have a question about this talk, please contact Emma Faid.

Charge pumping is a transport mechanism of generating electric current in the absence of a bias voltage. In the non-adiabatic regime the system is driven out of equilibrium and the ability to control the number of pumped electrons per modulation cycle has long been considered unfeasible. Non-adiabatic pumping with high precision has recently been realized in tunable barrier devices, following the advances in surface-acoustic-wave-driven transport. The (re-)discovery of this mechanism provided new momentum to the developments of quantized current sources in the field of metrology. This talk discusses the pumping mechanism, its potential precision and its wider applications, including quantized voltage generation and excited state preparation.

This talk is part of the Semiconductor Physics Group Seminars series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Mott Seminar Room, Cavendish Laboratory, Department of Physics
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• School of Physical Sciences
• Semiconductor Physics Group Seminars
• Thin Film Magnetic Talks

Note that ex-directory lists are not shown.