Quantum exceptional points of non-Hermitian Hamiltonians and Liouvillians: The effects of quantum jumps
Exceptional points (EPs) correspond to degeneracies of open systems. These are attracting
much interest in optics, optoelectronics, plasmonics, and condensed matter physics. In the …
much interest in optics, optoelectronics, plasmonics, and condensed matter physics. In the …
Classical light vs. nonclassical light: characterizations and interesting applications
A Pathak, A Ghatak - Journal of Electromagnetic Waves and …, 2018 - Taylor & Francis
We briefly review the ideas that have shaped modern optics and have led to various
applications of light ranging from spectroscopy to astrophysics, and street lights to quantum …
applications of light ranging from spectroscopy to astrophysics, and street lights to quantum …
Tunable multiphonon blockade in coupled nanomechanical resonators
A single phonon in a nonlinear nanomechanical resonator (NAMR) can block the excitation
of a second phonon [Phys. Rev. A 82, 032101 (2010) PLRAAN 1050-2947 …
of a second phonon [Phys. Rev. A 82, 032101 (2010) PLRAAN 1050-2947 …
Two-photon blockade and photon-induced tunneling generated by squeezing
A Kowalewska-Kudłaszyk, SI Abo, G Chimczak… - Physical Review A, 2019 - APS
Inspired by the recent experiment of Hamsen et al.[Phys. Rev. Lett. 118, 133604 (2017)
10.1103/PhysRevLett. 118.133604], which demonstrated two-photon blockade in a driven …
10.1103/PhysRevLett. 118.133604], which demonstrated two-photon blockade in a driven …
Simulating open quantum systems with Hamiltonian ensembles and the nonclassicality of the dynamics
The incoherent dynamical properties of open quantum systems are generically attributed to
an ongoing correlation between the system and its environment. Here, we propose a novel …
an ongoing correlation between the system and its environment. Here, we propose a novel …
Tight inequalities for nonclassicality of measurement statistics
In quantum optics, measurement statistics—for example, photocounting statistics—are
considered nonclassical if they cannot be reproduced with statistical mixtures of classical …
considered nonclassical if they cannot be reproduced with statistical mixtures of classical …
Conservation relation of nonclassicality and entanglement for Gaussian states in a beam splitter
We study the relation between single-mode nonclassicality and two-mode entanglement in a
beam splitter. We show that single-mode nonclassicality (the entanglement potential) of …
beam splitter. We show that single-mode nonclassicality (the entanglement potential) of …
Einstein-Podolsky-Rosen steering: Its geometric quantification and witness
We propose a measure of quantum steerability, namely, a convex steering monotone, based
on the trace distance between a given assemblage and its corresponding closest …
on the trace distance between a given assemblage and its corresponding closest …
Quantum cryptography over non-Markovian channels
A three-party scheme for secure quantum communication, namely controlled quantum
dialogue (CQD), is analyzed under the influence of non-Markovian channels. By comparing …
dialogue (CQD), is analyzed under the influence of non-Markovian channels. By comparing …
Experimental hierarchy of two-qubit quantum correlations without state tomography
S Abo, J Soubusta, K Jiráková, K Bartkiewicz… - Scientific Reports, 2023 - nature.com
A Werner state, which is the singlet Bell state affected by white noise, is a prototype example
of states, which can reveal a hierarchy of quantum entanglement, steering, and Bell …
of states, which can reveal a hierarchy of quantum entanglement, steering, and Bell …