Entangled Light from White Noise
TLDR
The entanglement is maximized for intermediate values of the cavity damping rates and the intensity of the white noise field, vanishing both for small and for large values of these parameters and thus exhibiting a stochastic-resonancelike behavior.Abstract:
An atom that couples to two distinct leaky optical cavities is driven by an external optical white noise field. We describe how entanglement between the light fields sustained by two optical cavities arises in such a situation. The entanglement is maximized for intermediate values of the cavity damping rates and the intensity of the white noise field, vanishing both for small and for large values of these parameters and thus exhibiting a stochastic-resonancelike behavior. This example illustrates the possibility of generating entanglement by exclusively incoherent means and sheds new light on the constructive role noise may play in certain tasks of interest for quantum information processing.read more
Citations
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Quantum entanglement
TL;DR: In this article, the basic aspects of entanglement including its characterization, detection, distillation, and quantification are discussed, and a basic role of entonglement in quantum communication within distant labs paradigm is discussed.
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Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
TL;DR: In this article, the authors review recent developments in the physics of ultracold atomic and molecular gases in optical lattices and show how these systems may be employed as quantum simulators to answer some challenging open questions of condensed matter, and even high energy physics.
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Dephasing-assisted transport: quantum networks and biomolecules
TL;DR: In this paper, the authors show that, even at zero temperature, transport of excitations across dissipative quantum networks can be enhanced by local dephasing noise and suggest that the presence of entanglement does not play an essential role for energy transport and may even hinder it.
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Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport
TL;DR: This work identifies key mechanisms through which noise such as dephasing, perhaps counter intuitively, may actually aid transport through a dissipative network by opening up additional pathways for excitation transfer.
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The role of non-equilibrium vibrational structures in electronic coherence and recoherence in pigment-protein complexes
Alex W. Chin,Alex W. Chin,Javier Prior,R. Rosenbach,Felipe Caycedo-Soler,Susana F. Huelga,Martin B. Plenio +6 more
TL;DR: In this article, the microscopic mechanism that drives the coherent behavior of photosynthesis is uncovered. But it is not yet known how to detect the interactions between the excitons and the vibrational modes of the pigment-protein complex.
References
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Book
Quantum Computation and Quantum Information
TL;DR: In this article, the quantum Fourier transform and its application in quantum information theory is discussed, and distance measures for quantum information are defined. And quantum error-correction and entropy and information are discussed.