Characterizations and Quantifications of Macroscopic Quantumness and Its Implementations using Optical Fields
@article{Jeong2015CharacterizationsAQ, title={Characterizations and Quantifications of Macroscopic Quantumness and Its Implementations using Optical Fields}, author={Hyunseok Jeong and Minsu Kang and Hyukjoon Kwon}, journal={Optics Communications}, year={2015}, volume={337}, pages={12-21} }
26 Citations
Macroscopic quantum states: Measures, fragility, and implementations
- PhysicsReviews of Modern Physics
- 2018
Large-scale quantum effects have always played an important role in the foundations of quantum theory. With recent experimental progress and the aspiration for quantum enhanced applications, the…
Detecting the degree of macroscopic quantumness using an overlap measurement
- Physics
- 2014
We investigate how to experimentally detect a recently proposed measure to quantify macroscopic quantum superpositions [Phys. Rev. Lett.106, 220401…
Coherence, asymmetry, and quantum macroscopicity
- Physics
- 2018
We investigate a measure of quantum coherence and its extension to quantify quantum macroscopicity. The coherence measure can also quantify the asymmetry of a quantum state with respect to a given…
Coherent Superpositions of Photon Creation Operations and Their Application to Multimode States of Light
- PhysicsEntropy
- 2021
A concise review of recent experimental results concerning the conditional implementation of coherent superpositions of single-photon additions onto distinct field modes shows the generation of a tunable degree of entanglement and peculiar correlations in the photon numbers and the quadratures of multimode, multiphoton, states of light.
Macroscopic Superpositions as Quantum Ground States.
- PhysicsPhysical review letters
- 2017
An upper bound on the energy gap of an arbitrary physical Hamiltonian provided that its ground state is a superposition of two well-distinguishable macroscopic "semiclassical" states is derived.
Quantum Apices: Identifying Limits of Entanglement, Nonlocality, & Contextuality
- Physics
- 2014
This work develops analytic methods to quantitatively demarcate quantum reality from its subset of classical phenomenon, as well as from the superset of general probabilistic theories. Regarding…
Entangling Macroscopic Light States by Delocalized Photon Addition.
- PhysicsPhysical review letters
- 2020
A high degree of entanglement can in principle endure light states of macroscopic intensities and is expected to be particularly robust against losses.
Quantum metrology with generalized cat states
- PhysicsPhysical Review A
- 2019
We show a general relationship between a superposition of macroscopically distinct states and sensitivity in quantum metrology. Generalized cat states are defined by using an index which extracts the…
Quantum violation of classical physics in macroscopic systems
- Physics
- 2016
While quantum theory has been tested to an incredible degree on microscopic scales, quantum effects are seldom observed in our everyday macroscopic world. The curious results of applying quantum…
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