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Weak Measurement, Uncertainty Relationships, and Experimental Information Tradeoffs: Quantum Information and Computation Seminar

Seminar: Departmental | May 15 | 2-3 p.m. | 290 Hearst Memorial Mining Building


Aephraim Steinberg, University of Toronto

Berkeley Quantum Information & Computation Center


I will discuss several ongoing projects which investigate quantum measurement, its limitations, and the range of strategies available. In particular, I will describe an experiment using weak measurements and ideas from cluster-state quantum computing to demonstrate a violation of Heisenberg's proposed relationship between measurement precision and measurement disturbance; and work investigating the use of weak-value amplification for measuring nonlinear optical phase shifts at the single-photon level. If time permits, I will also discuss ongoing work on a "quantum data compression" protocol which would allow a small-scale quantum memory to store all the extractable information from a larger ensemble of identically prepared systems.


shabani@berkeley.edu