31 citations · 67 across the 6 of their papers we have counts for
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Classical capacities of quantum channels with environment assistance
Siddharth Karumanchi, Stefano Mancini, Andreas Winter +1
A quantum channel physically is a unitary interaction between the information carrying system and an environment, which is initialized in a pure state before the interaction. Conve…
Quantum Channel Capacities with Passive Environment Assistance
Siddharth Karumanchi, Stefano Mancini, Andreas Winter +1
We initiate the study of passive environment-assisted communication via a quantum channel, modeled as a unitary interaction between the information carrying system and an environme…
In how many ways can quantum information be split ?
Sreraman Muralidharan, Siddharth Karumanchi, Srinatha Narayanaswamy +2
We establish a theoretical understanding of the entanglement properties of a physical system that mediates a quantum information splitting protocol. We quantify the different ways…
Quantum tasks using six qubit cluster states
Jayakrishnan V Menon, Naveen Paul, Siddharth Karumanchi +2
The usefulness of the recent experimentally realized six photon cluster state by C. Y. Lu et al. (2007, Nature {3} {91}), is investigated for quantum communication protocols like t…
Minimal classical communication and measurement complexity for quantum information splitting of a two qubit state
Siddharth Karumanchi, Sreraman Muralidharan, Prasanta K. Panigrahi
We provide explicit schemes for quantum information splitting (QIS) of real or equatorial two qubit states among two parties, through the five particle cluster and Brown states res…
qubit "mirror states" for optimal quantum communication
Sreraman Muralidharan, Siddharth Karumanchi, Sakshi Jain +2
We introduce a new genuinely 2N qubit state, known as the "mirror state" with interesting entanglement properties. The well known Bell and the cluster states form a special case of…