49 citations
- University of DelhiIN9 papers
- Indira Gandhi Delhi Technical University for WomenIN5 papers
- Indian Association for the Cultivation of ScienceIN3 papers
- Jamia Millia IslamiaIN3 papers
- University of CalcuttaIN3 papers
- University of PatrasGR3 papers
- Hellenic Open UniversityGR2 papers
- Indira Gandhi Institute of TechnologyIN2 papers
- Jawaharlal Nehru Centre for Advanced Scientific ResearchIN2 papers
- Jaypee Institute of Information TechnologyIN2 papers
- Max Planck Institute for PhysicsDE2 papers
- National Centre for Biological SciencesIN2 papers
7 papers · 1 filter
Decoherence and Visibility Enhancement in Multi-Path Interference
Sandeep Mishra, Anu Venugopalan, Tabish Qureshi
We theoretically analyze the observations reported in a four-path quantum interference experiment via multiple beam Ramsey interference [Phys. Rev. Lett. 86, 559 (2001)]. In this e…
Comparing coherence measures for X states: Can quantum states be ordered based on quantum coherence?
Sandeep Mishra, Kishore Thapliyal, Anirban Pathak +1
Quantum coherence is an essential resource for quantum information processing and various quantitative measures of it have been introduced. However, the interconnections between th…
Monitoring Decoherence via Measurement of Quantum Coherence
Anu Venugopalan, Sandeep Mishra, Tabish Qureshi
A multi-slit interference experiment, with which-way detectors, in the presence of environment induced decoherence, is theoretically analyzed. The effect of environment is modeled…
A Simplified Hierarchical Dynamic Quantum Secret Sharing Protocol with Added Features
Sandeep Mishra, Chitra Shukla, Anirban Pathak +2
Generalizing the notion of dynamic quantum secret sharing (DQSS), a simplified protocol for hierarchical dynamic quantum secret sharing (HDQSS) is proposed and it is shown that the…
Controlling wave function localization in a multiple quantum well structure
Anjana Bagga, Anu Venugopalan
The dynamics of a wave function describing a particle confined in a multiple quantum well potential is studied numerically. As a consequence of quantum mechanical tunneling, an ini…
Preferred states of the apparatus
Anu Venugopalan
A simple one dimensional model for the system-apparatus interaction is analyzed. The system is a spin-1/2 particle, and its position and momentum degrees constitutes the apparatus.…