5 papers · 1 filter
Open quantum system dynamics of -states: Entanglement sudden death and sudden birth
Nikhitha Nunavath, Sandeep Mishra, Anirban Pathak
The origin of disentanglement for two specific sub-classes of -states namely maximally nonlocal mixed states (MNMSs) and maximally entangled mixed states (MEMSs) is investigated…
Quantum and Semi-Quantum Lottery: Strategies and Advantages
Sandeep Mishra, Anirban Pathak
Lottery is a game in which multiple players take chances in the hope of getting some rewards in cash or kind. In addition, from the time of the early civilizations, lottery has als…
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…
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…
Bell States via Two-Particle Contact Interaction: Shannon Entropy as an Indicator of Entanglement Dynamics
Sandeep Mishra, Anjana Bagga, Anu Venugopalan
We study the coherent dynamics of two interacting particles in a quantum double-well and show that the Shannon entropy can be a definitive signature of entanglement as an alternati…