Distilling entanglement from random cascades with partial ``which path'' ambiguity
Eli A. Meirom,Netanel H. Lindner,Y. Berlatzky,Eilon Poem,Nika Akopian,Joseph E. Avron,David Gershoni +6 more
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In this article, the density matrix of a pair of photons emitted in a decay cascade with partial ''which path'' ambiguity is calculated using a two dimensional ''phase diagram'' and qualitative features of the distilled entanglement are presented.Abstract:
We develop a framework to calculate the density matrix of a pair of photons emitted in a decay cascade with partial ``which path'' ambiguity. We describe an appropriate entanglement distillation scheme which works also for certain random cascades. The qualitative features of the distilled entanglement are presented in a two dimensional ``phase diagram.'' The theory is applied to the quantum tomography of the decay cascade of a biexciton in a semiconductor quantum dot. Agreement with experiment is obtained.read more
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Entanglement on demand through time reordering.
Joseph E. Avron,Gili Bisker,David Gershoni,Netanel H. Lindner,Eli A. Meirom,Richard J. Warburton +5 more
TL;DR: Entangled photons can be generated on demand in a novel scheme involving unitary time reordering of the photons emitted in a radiative decay and can be applied to the biexciton cascade in quantum dots.
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Distilling one, two and entangled pairs of photons from a quantum dot with cavity QED effects and spectral filtering
TL;DR: In this paper, a quantum dot can be used as a source of one-and two-photon states and of polarisation entangled photon pairs, and the emission of such states is investigated from the point of view of frequency-resolved twophoton correlations.
Journal ArticleDOI
Distilling one, two and entangled pairs of photons from a quantum dot with cavity QED effects and spectral filtering
TL;DR: In this article, a quantum dot can be used as a source of one and two-photon states and of polarization entangled photon pairs, and a combination of these various options is used to iteratively refine the emission in a distillation process and arrive at highly correlated states with a high purity.
Journal ArticleDOI
Cooper-pair-based photon entanglement without isolated emitters
TL;DR: In this article, the recombination of Cooper pairs in semiconductors can be used as a natural source of polarization-entangled photons, making use of the inherent angular momentum entanglement in the superconducting state.
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Entangled photon pairs from a quantum-dot cascade decay: The effect of time reordering
Filippo Troiani,Carlos Tejedor +1 more
TL;DR: In this article, the color coincidence across generation (AG) strategy was proposed as an alternative to the previous within generation approach, which theoretically analyzes the color similarity across generation strategy.
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.
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Quantum computation and quantum information
TL;DR: This special issue of Mathematical Structures in Computer Science contains several contributions related to the modern field of Quantum Information and Quantum Computing, with a focus on entanglement.
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Optical Coherence and Quantum Optics
Leonard Mandel,Emil Wolf +1 more
TL;DR: In this article, the authors present a systematic account of optical coherence theory within the framework of classical optics, as applied to such topics as radiation from sources of different states of coherence, foundations of radiometry, effects of source coherence on the spectra of radiated fields, and scattering of partially coherent light by random media.
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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.