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12 papers · 2 filters
Quantum-enhanced metrology with the single-mode coherent states of an optical cavity inside a quantum feedback loop
Lewis A. Clark, Adam Stokes, Almut Beige
In this paper, we use the non-linear dynamics of the individual quantum trajectories of an optical cavity inside an instantaneous quantum feedback loop to measure the phase shift b…
Low depth measurement-based quantum computation beyond two-level systems
Timothy J. Proctor
Low depth measurement-based quantum computation with qudits (-level systems) is investigated and a precise relationship between this powerful model and qudit quantum circuits is…
Ancilla-driven quantum computation for qudits and continuous variables
Timothy Proctor, Melissa Giulian, Natalia Korolkova +2
Although qubits are the leading candidate for the basic elements in a quantum computer, there are also a range of reasons to consider using higher dimensional qudits or quantum con…
Quantum imaging with undetected photons as ancilla-assisted process tomography
M. Ghalaii, M. Afsary, S. Alipour +1
We show that how a recent experiment of quantum imaging with undetected photons can basically be described as a (partial) ancilla-assisted process tomography. We propose a simplifi…
A cavity-mediated collective quantum effect in sonoluminescing bubbles
Almut Beige, Oleg Kim
This paper discusses a collective quantum effect which might play an important role in sonoluminescence experiments. We suggest that it occurs during the final stages of the collap…
A physically-motivated quantisation of the electromagnetic field
Robert Bennett, Thomas M. Barlow, Almut Beige
The notion that the electromagnetic field is quantised is usually inferred from observations such as the photoelectric effect and the black-body spectrum. However accounts of the q…