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- The University of QueenslandAU14 papers
- Centre for Quantum Computation and Communication TechnologyAU12 papers
- Australian Research CouncilAU5 papers
- Macquarie UniversityAU5 papers
- University of WaterlooCA5 papers
- University College LondonGB4 papers
- ARC Centre of Excellence for Engineered Quantum SystemsAU3 papers
- Australian National UniversityAU3 papers
- California Institute of TechnologyUS3 papers
- King Abdulaziz UniversitySA3 papers
- The University of SydneyAU3 papers
- University of Massachusetts BostonUS3 papers
7 papers · 2 filters
Group theoretic formulation of complementarity
J. A. Vaccaro
We generalize Bohr's complementarity principle for wave and particle properties to arbitrary quantum systems. We begin by noting that a particle-like state is represented by a spat…
How many bits does it take to track an open quantum system?
R. I. Karasik, H. M. Wiseman
A -dimensional Markovian open quantum system will undergo quantum jumps between pure states, if we can monitor the bath to which it is coupled with sufficient precision. In gene…
Measuring measurement--disturbance relationships with weak values
A. P. Lund, H. M. Wiseman
Using formal definitions for measurement precision ε and disturbance (measurement backaction) η, Ozawa [Phys. Rev. A 67, 042105 (2003)] has shown that Heisenberg's claimed relation…
Imaging trapped ions with a microfabricated lens for quantum information processing
Erik W. Streed, Benjamin G. Norton, Andreas Jechow +2
Trapped ions are a leading system for realizing quantum information processing (QIP). Most of the technologies required for implementing large-scale trapped-ion QIP have been demon…
Rapid purification of quantum systems by measuring in a feedback-controlled unbiased basis
Joshua Combes, Howard M. Wiseman, Kurt Jacobs +1
Rapid-purification by feedback --- specifically, reducing the mean impurity faster than by measurement alone --- can be achieved by making the eigenbasis of the density matrix to b…
Information erasure without an energy cost
Joan A. Vaccaro, Stephen M. Barnett
Landauer argued that the process of erasing the information stored in a memory device incurs an energy cost in the form of a minimum amount of mechanical work. We find, however, th…