Regensburg 2013 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 37: Quantum Coherence, Quantum Information Systems 1

TT 37.13: Vortrag

Mittwoch, 13. März 2013, 12:45–13:00, H19

Measuring ultrasmall time delays of light by joint weak measurements — •Grégory Strübi and Christoph Bruder — University of Basel, Basel, Switzerland

We propose to use weak measurements away from the weak-value amplification regime to carry out precision measurements of time delays of light. Our scheme is robust to several sources of noise that are shown to only limit the relative precision of the measurement, and not set a limit on the smallest measurable phase shift contrary to standard interferometry and weak-value based measurement techniques. Our idea is not restricted to phase-shift measurements and could be used to measure many small effects using a similar protocol.