Quantum optics: Micro meets macro
TLDR
In this article, a microscopic one-photon subsystem can be entangled with a macroscopic subsystem of thousands of photons: such hybrid micro-macro entanglement, now efficiently produced and verified, should be useful for quantum metrology and for fundamental tests of quantum mechanics.Abstract:
A microscopic one-photon subsystem can be entangled with a macroscopic subsystem of thousands of photons: such hybrid micro–macro entanglement, now efficiently produced and verified, should be useful for quantum metrology and for fundamental tests of quantum mechanics.read more
Citations
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Journal ArticleDOI
High-dimensional entanglement certification.
Zixin Huang,Lorenzo Maccone,Akib Karim,Akib Karim,Chiara Macchiavello,Robert J. Chapman,Robert J. Chapman,Alberto Peruzzo,Alberto Peruzzo +8 more
TL;DR: In this article, the authors propose an information-theoretic approach for quantification of quantum entanglement in high dimensions, which is suitable for large systems and scales more efficiently than Bell's inequality and entenglement witness.
Journal ArticleDOI
High-dimensional entanglement certification
Zixin Huang,Lorenzo Maccone,Akib Karim,Akib Karim,Chiara Macchiavello,Robert J. Chapman,Robert J. Chapman,Alberto Peruzzo,Alberto Peruzzo +8 more
TL;DR: A new procedure for entanglement certification that is suitable for large systems, based entirely on information-theoretics, and scales more efficiently than Bell’s inequality and entanglements witness is experimentally demonstrated.
Posted Content
Assisted Macroscopic Quantumness
TL;DR: In this paper, a variant of the Wigner's friend experiment is introduced, in which a multiparticle quantum system is observed by the friend, and the friend undergoes rapid decoherence through her interactions with the environment.
References
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Journal ArticleDOI
Teleportation of a Vacuum–One-Photon Qubit
TL;DR: An unprecedented large value of the teleportation "fidelity" has been attained: F = (95.3 +/- 0.6)%.
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Observation of micro–macro entanglement of light
A. I. Lvovsky,Roohollah Ghobadi,Roohollah Ghobadi,Aveek Chandra,Adarsh S. Prasad,Christoph Simon +5 more
TL;DR: In this article, it was shown that microscopic quantum fluctuations (in field quadrature measurements) on one side are correlated with macroscopic fluctuations in the photon number statistics on the other side.
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Displacement of entanglement back and forth between the micro and macro domains
TL;DR: In this paper, an experiment in the spirit of Schroedinger's cat gedanken experiment investigates the entanglement between microscopic and macroscopic domains, and finds that quantum theory still applies at macro-scopic scales.
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Entanglement Test on a Microscopic-Macroscopic System
TL;DR: This work creates an entangled photon pair by a nonlinear optical process, then one photon of the pair is injected into an optical parametric amplifier operating for any input polarization state, i.e., into a phase-covariant cloning machine and establishes a connection between the single photon and the multiparticle fields.
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Towards quantum experiments with human eyes as detectors based on cloning via stimulated emission.
Pavel Sekatski,Nicolas Brunner,Nicolas Brunner,Cyril Branciard,Nicolas Gisin,Christoph Simon +5 more
TL;DR: It is shown theoretically that a large Bell inequality violation can be obtained with human eyes as detectors, in a "micro-macro" experiment where one photon from an entangled pair is greatly amplified via stimulated emission, and it is proved that there is genuine micro- Macro entanglement even for high loss.