9 papers
On the Origin of Beyond-Classical Advantage in the Parity-Permutation Problem
Jayashree Karmakar, Biswadeep Chatterjee, Rafiuddin Gazi +6
We investigate the task of identifying the parity (odd vs even) of an unknown permutation applied to particles. Classically, using fewer than distinct labels per particle l…
Demultiplexing Generalized Information via Quantum Transmission Lines
Soham Sau, Anna JenÄová, Tamal Guha
Demultiplexers are the fundamental primitives of network architecture, enabling perfect routing of an input classical signal to a designated one, among multiple output ports. Quant…
Free encoding capacity: A universal unit for quantum resources
Shampa Mondal, Soumajit Das, Preeti Parashar +1
A perfect d-dimensional quantum channel can convey log d-bits of classical information by encoding messages in d-orthogonal quantum states. Alternatively, for every quantum state a…
Lost and found charge in quantum batteries
Debanjan Dey Sarkar, Mallika Mondal, Preeti Parashar +1
Quantum batteries are prone to losing their stored charge, when interacting with a thermal environment. However, getting a limited assistance from the thermal environment, is it po…
Local Inaccessibility of Random Classical Information and Their Implications in the Change Point Problem
Snehasish Roy Chowdhury, Subhendu B. Ghosh, Tathagata Gupta +4
Discrimination of quantum states under local operations and classical communication (LOCC) is an intriguing question in the context of local retrieval of classical information, enc…
Minimal Help, Maximal Gain: Environmental Assistance Unlocks Encoding Strength
Snehasish Roy Chowdhury, Sutapa Saha, Subhendu B. Ghosh +2
For any quantum transmission line, with smaller output dimension than its input, the number of classical symbols that can be reliably encoded is strictly suboptimal. In other words…