Results 21 to 30 of about 69,922 (266)

Temporal Entanglement, Quasiparticles, and the Role of Interactions

Physical Review Letters, 2022
In quantum many-body dynamics admitting a description in terms of non-interacting quasiparticles, the Feynman-Vernon influence matrix (IM), encoding the effect of the system on the evolution of its local subsystems, can be analyzed exactly. For discrete dynamics, the temporal entanglement (TE) of the corresponding IM satisfies an area law, suggesting ...
Giudice, Giacomo, Giudici, Giuliano, Sonner, Michael, Thoenniss, Julian, Lerose, Alessio, Abanin, Dmitry A., Piroli, Lorenzo   +6 more
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Entanglement echo and dynamical entanglement transitions

Physical Review Research, 2021
We formulate dynamical phase transitions in subsystems embedded in larger quantum systems. Introducing the entanglement echo as an overlap of the initial and instantaneous entanglement ground states, we show its analytic structure after a quench provides
Kim Pöyhönen, Teemu Ojanen
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Entropy of temporal entanglement

International Journal of Quantum Information, 2022
A recently proposed history formalism is used to define temporal entanglement in quantum systems, and compute its entropy. The procedure is based on the time-reduction of the history density operator, and allows a symmetrical treatment of space and time correlations.
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Quantum Fourier transform is the building block for creating entanglement

Scientific Reports, 2021
This study demonstrates entanglement can be exclusively constituted by quantum Fourier transform (QFT) blocks. A bridge between entanglement and QFT will allow incorporating a spectral analysis to the already traditional temporal approach of entanglement,
Mario Mastriani
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Probing RG flows, symmetry resolution and quench dynamics through the capacity of entanglement

Journal of High Energy Physics, 2023
We compare the capacity of entanglement with the entanglement entropy by considering various aspects of these quantities for free bosonic and fermionic models in one spatial dimension, both in the continuum and on the lattice. Substantial differences are
Raúl Arias, Giuseppe Di Giulio, Esko Keski-Vakkuri, Erik Tonni   +3 more
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Temporally versatile polarization entanglement from Bragg reflection waveguides [PDF]

Optics Letters, 2017
Bragg-reflection waveguides emitting broadband parametric down-conversion (PDC) have been proven to be well suited for the on-chip generation of polarization entanglement in a straightforward fashion [R. T. Horn et al., Sci. Rep. 3, 2314 (2013)]. Here, we investigate how the properties of the created states can be modified by controlling the relative ...
Schlager, A., Pressl, B., Laiho, K., Suchomel, H., Kamp, M., Höfling, S., Schneider, C., Weihs, G.   +7 more
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Spatial and temporal characterization of polarization entanglement [PDF]

International Journal of Quantum Information, 2020
We describe the full temporal and spatial characterization of polarization-entangled photons produced by Spontaneous Parametric Down Conversions using an intensified high-speed optical camera, Tpx3Cam. This novel technique allows for precise determination of Bell inequality parameters and for new characterization methods for the spatial distribution ...
Andrei Nomerotski, Dimitrios Katramatos, Paul Stankus, Peter Svihra, Guodong Cui, Sonali Gera, Mael Flament, Eden Figueroa   +7 more
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Entangled photons enabled time-frequency-resolved coherent Raman spectroscopy and applications to electronic coherences at femtosecond scale

Light: Science & Applications, 2022
Quantum entanglement has emerged as a great resource for spectroscopy and its importance in two-photon spectrum and microscopy has been demonstrated.
Zhedong Zhang, Tao Peng, Xiaoyu Nie, Girish S. Agarwal, Marlan O. Scully   +4 more
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Spatial and temporal resolution in entangled ghost imaging [PDF]

Journal of Modern Optics, 2019
We show that, when the integration time of the single photon detectors is longer than the correlation time of the biphoton, the attainable spatial resolution in ghost imaging with entangled signal idler pairs generated in type II spontaneous parametric down conversion is limited by the angular spread of single-frequency-signal idler pairs. If, however,
Reintjes, J., Bashkansky, Mark
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Scaling of temporal entanglement in proximity to integrability [PDF]

Physical Review B, 2021
Describing dynamics of quantum many-body systems is a formidable challenge due to rapid generation of quantum entanglement between remote degrees of freedom. A promising approach to tackle this challenge, which has been proposed recently, is to characterize the quantum dynamics of a many-body system and its properties as a bath via the Feynman-Vernon ...
Lerose, Alessio, Sonner, Michael, Abanin, Dmitry A.   +2 more
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