Sudden vanishing and reappearance of nonclassical effects: General occurrence of finite-time decays and periodic vanishings of nonclassicality and entanglement witnesses

Journal Article · Sun May 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.053814· OSTI ID:21546863

Bartkowiak, Monika ^[1]; Miranowicz, Adam ^[1]; Xiaoguang, Wang ^[2]; Yuxi, Liu ^[3]; Leonski, Wieslaw ^[4]; Nori, Franco ^[2]

---

1. Faculty of Physics, Adam Mickiewicz University, PL-61-614 Poznan (Poland)
2. Advanced Science Institute, RIKEN, Wako-shi, Saitama 351-0198 (Japan)
3. Institute of Microelectronics, Tsinghua University, Beijing 100084 (China)
4. Institute of Physics, University of Zielona Gora, PL-65-516 Zielona Gora (Poland)

Analyses of phenomena exhibiting finite-time decay of quantum entanglement have recently attracted considerable attention. Such decay is often referred to as sudden vanishing (or sudden death) of entanglement, which can be followed by its sudden reappearance (or sudden rebirth). We analyze various finite-time decays (for dissipative systems) and analogous periodic vanishings (for unitary systems) of nonclassical correlations as described by violations of classical inequalities and the corresponding nonclassicality witnesses (or quantumness witnesses), which are not necessarily entanglement witnesses. We show that these sudden vanishings are universal phenomena and can be observed: (i) not only for two- or multimode but also for single-mode nonclassical fields, (ii) not solely for dissipative systems, and (iii) at evolution times which are usually different from those of sudden vanishings and reappearances of quantum entanglement.

• OSTI ID: 21546863
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
CALCULATION METHODS
CORRELATIONS
DECAY
PERIODICITY
QUANTUM ENTANGLEMENT
VARIATIONS