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Local passivity and entanglement in shared quantum batteries
Kornikar Sen, Ujjwal Sen
We identify the conditions for local passivity for shared quantum batteries with local Hamiltonians. For locally passive states of two-qubit batteries, we find the relation of thei…
Sequential measurement-device-independent entanglement detection by multiple observers
Chirag Srivastava, Shiladitya Mal, Aditi Sen De +1
Violation of a Bell inequality certifies that the underlying state must be entangled in a device-independent way, although there may exist some entangled states which do not violat…
Population inversion and entanglement in single and double glassy Jaynes-Cummings models
Ahana Ghoshal, Sreetama Das, Aditi Sen De +1
We find that a suppression of the collapse and revival of population inversion occurs in response to insertion of Gaussian quenched disorder in atom-cavity interaction strength in…
Transmitting quantum information by superposing causal order of mutually unbiased measurements
Manish K. Gupta, Ujjwal Sen
Two quantum measurements sequentially acting one after the other, if they are mutually unbiased, will lead to a complete removal of information encoded in the input quantum state.…
Witnessing nonseparability of bipartite quantum operations
Sohail, Ujjwal Sen
We provide a method for witnessing nonseparability of quantum processes on shared systems, which uses the channel-state duality. The method uses a maximally entangled state as a re…
Coherence as witness for quantumness of gravity
Ahana Ghoshal, Arun Kumar Pati, Ujjwal Sen
We propose an interferometric set-up that utilizes the concept of quantum coherence to provide quantum signatures of gravity. The gravitational force comes into nontrivial play due…