14 papers · 1 filter
Decohered toric code under quantum damping noise and its mapping to a classical spin model
Nihar Ranjan Dash, Sanjoy Dutta, R. Srikanth +1
We investigate properties of toric codes under realistic damping error channels, which include squeezing, thermal and non-Markovian effects. First, we map the decohered toric code…
Noise-Adaptive Predictive Dynamical Decoupling
Ali Abu-Nada, Subhashish Banerjee, Lian-Ao Wu
Protecting quantum coherence against realistic environmental noise remains one of the fundamental obstacles to scalable quantum technologies. We develop a noise-adaptive dynamical…
Entanglement-assisted continuous-variable concatenated codes for encoding qubits or oscillators
Nihar Ranjan Dash, Sanjoy Dutta, R. Srikanth +1
Entanglement-assisted (EA) stabilizer codes enhance the rate of error correction in relation to codes with no pre-shared entanglement. Meanwhile, bosonic error-correcting codes, su…
Quantum steganographic protocols using degenerate and entanglement-assisted quantum codes
Sanjoy Dutta, Nihar Ranjan Dash, Subhashish Banerjee +1
Steganography is the art of concealing secret information by embedding it in an apparently innocent-looking message. Quantum steganography applies the principles of quantum mechani…
Quantum state transfer on a scalable network under unital and non-unital noise
Monika Rani, Subhashish Banerjee, Nikhil Swami +1
We investigate quantum state transfer on a class of bipartite graphs, namely the butterfly graphs, within the framework of discrete-time quantum walks. These graphs facilitate the…
Quantum state transfer and periodicity in discrete-time quantum walks under non--Markovian dephasing noise
Monika Rani, Supriyo Dutta, Subhashish Banerjee
In quantum communication, quantum state transfer from one location to another in a quantum network plays a prominent role, where the impact of noise could be crucial. The idea of s…