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- Centre for Quantum Computation and Communication TechnologyAU14 papers
- The University of QueenslandAU14 papers
- Australian Research CouncilAU6 papers
- Macquarie UniversityAU5 papers
- University of WaterlooCA5 papers
- University College LondonGB4 papers
- University of OxfordGB4 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
10 papers · 2 filters
Fast gates for ion traps by splitting laser pulses
C. D. B. Bentley, A. R. R. Carvalho, D. Kielpinski +1
We present a fast phase gate scheme that is experimentally achievable and has an operation time more than two orders of magnitude faster than current experimental schemes for low n…
Quantum-enhanced optical phase tracking
Hidehiro Yonezawa, Daisuke Nakane, Trevor A. Wheatley +10
Tracking a randomly varying optical phase is a key task in metrology, with applications in optical communication. The best precision for optical phase tracking has till now been li…
Optimal Heisenberg-style bounds for the average performance of arbitrary phase estimates
Dominic W. Berry, Michael J. W. Hall, Marcin Zwierz +1
The ultimate bound to the accuracy of phase estimates is often assumed to be given by the Heisenberg limit. Recent work seemed to indicate that this bound can be violated, yielding…
Controllable optical phase shift over one radian from a single isolated atom
A. Jechow, B. G. Norton, S. Händel +3
Fundamental optics such as lenses and prisms work by applying phase shifts to incoming light via the refractive index. In these macroscopic devices, many particles each contribute…
Nonlocal signaling in the configuration space model of quantum-classical interactions
Michael J. W. Hall, Marcel Reginatto, C. M. Savage
When interactions are turned off, the theory of interacting quantum and classical ensembles due to Hall and Reginatto is shown to suffer from a nonlocal signaling effect that is ef…
Comment on "Geometric derivation of the quantum speed limit"
Marcin Zwierz
Recently, Jones and Kok [P. J. Jones and P. Kok, Phys. Rev. A 82, 022107 (2010)] presented alternative geometric derivations of the Mandelstam-Tamm [L. Mandelstam and I. Tamm, J. P…