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6 papers
Maximum entropy principle for quantum processes
Siddhartha Das, Ujjwal Sen
The maximum entropy principle, as applied to quantum systems, is a fundamental prescript positing that for a quantum system for which we only have partial knowledge, the maximum en…
Protocols for sharing genuine multipartite entanglement by employing copies of biseparable states
Swati Choudhary, Ujjwal Sen, Saronath Halder
Sharing genuine multipartite entanglement by considering collective use of copies of biseparable states, which are entangled across all bipartitions but lack genuine multipartite e…
Unconditionally superposition-robust entangled state in all multiparty quantum systems
Swati Choudhary, Ujjwal Sen, Saronath Halder
We investigate the inseparability of states generated by superposition of a multipartite pure entangled state with a product state. In particular, we identify specific multipartite…
To share and not share a singlet: control qubit and nonclassicality in teleportation
Kornikar Sen, Adithi Ajith, Saronath Halder +1
The superposition principle provides us the opportunity to unfold many surprising facts. One such fact leads to the generation of entanglement which may allow one to teleport an un…
Non-Markovian noise limits for sustaining entanglement in multiparty quantum states
Suchetana Goswami, Ujjwal Sen
The principal resource in several quantum information processing tasks is entanglement. Building practically useful versions of such tasks, one often needs to consider multipartite…
What and why of entanglement
Ujjwal Sen
We present here a brief discussion, in Bangla (Bengali), on what is entanglement and why it is interesting.