61 citations
- Huaqiao UniversityCN9 papers
- Kazan Federal UniversityRU9 papers
- Turin Polytechnic UniversityUZ6 papers
- Centre National de la Recherche ScientifiqueFR5 papers
- Université Gustave EiffelFR4 papers
- East China Normal UniversityCN3 papers
- Laboratoire d'électronique, systèmes de communication et microsystèmesFR3 papers
- Mie UniversityJP3 papers
- National Institute of InformaticsJP3 papers
- New York UniversityUS3 papers
- New York University ShanghaiCN3 papers
- Baoshan UniversityCN2 papers
7 papers · 1 filter
Quantum weak invariants: Dynamical evolution of fluctuations and correlations
Zeyi Shi, Sumiyoshi Abe
Weak invariants are time-dependent observables with conserved expectation values. Their fluctuations, however, do not remain constant in time. On the assumption that time evolution…
Fast-forward scheme reexamined: Choice of time and quantization
Sumiyoshi Abe
The fast-forward scheme for accelerating time evolution of quantum states through change of time is reexamined. Dirac's homogeneous formalism for classical dynamics and canonical q…
Fragility of quantum correlations and coherence in a multipartite photonic system
Huan Cao, Chandrashekar Radhakrishnan, Ming Su +6
Certain quantum states are well-known to be particularly fragile in the presence of decoherence, as illustrated by Schrodinger's famous gedanken cat experiment. It has been better…
Growing fluctuation of quantum weak invariant and dissipation
Sumiyoshi Abe
The concept of weak invariants has recently been introduced in the context of conserved quantities in finite-time processes in nonequilibrium quantum thermodynamics. A weak invaria…
Characterizing coherence with quantum observables
Suman Mandal, Marek Narozniak, Chandrashekar Radhakrishnan +3
We introduce a procedure based on quantum expectation values of measurement observables to characterize quantum coherence. Our measure allows one to quantify coherence without havi…
A multipartite generalization of quantum discord
Chandrashekar Radhakrishnan, Mathieu Lauriere, Tim Byrnes
A generalization of quantum discord to multipartite systems is proposed. A key feature of our formulation is its consistency with the conventional definition of discord in bipartit…