# Can quantum discord increase in a quantum communication task?

@article{Sarkar2018CanQD, title={Can quantum discord increase in a quantum communication task?}, author={Shubhayan Sarkar and Chandan Datta}, journal={Quantum Information Processing}, year={2018}, volume={17}, pages={1-11} }

Quantum teleportation of an unknown quantum state is one of the few communication tasks which has no classical counterpart. Usually the aim of teleportation is to send an unknown quantum state to a receiver. But is it possible in some way that the receiver’s state has more quantum discord than the sender’s state? We look at a scenario where Alice and Bob share a pure quantum state and Alice has an unknown quantum state. She performs joint measurement on her qubits and channel to prepare Bob’s…

## One Citation

### Remote State Design for Efficient Quantum Metrology with Separable and Non-Teleporting States

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It is demonstrated that these separable states with the least quantumness can be made extremely useful in parameter estimation tasks, and further show even in the case of the shared channel inflicted with the amplitude damping noise and phase flip noise, there is a gain in Quantum Fisher information (QFI).

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