Superiority in dense coding through non-Markovian stochasticity
arXiv:2211.13057 · doi:10.1103/PhysRevA.109.032616
Abstract
We investigate the distributed dense coding (DC) protocol, involving multiple senders and a single or two receivers under the influence of non-Markovian noise, acting on the encoded qubits transmitted from senders to the receiver(s). We compare the effects of non-Markovianity on DC both for the dephasing and depolarising channels. In the case of dephasing channels, we illustrate that for some classes of states, high non-Markovian strength can eradicate the negative influence of noisy channels which is not observed for depolarizing noise. Furthermore, we incorporate randomness into the noise models by replacing the Pauli matrices with random unitaries and demonstrate the constructive impact of stochastic noise models on the quenched averaged dense coding capacity. Interestingly, we report that the detrimental effect of non-Markovian depolarising channels in the DC protocol can be eliminated when randomness is added to the channel.
v1: 14 pages, 7 figures v2: close to published version
References in corpus (16)
- Finite-Time Disentanglement via Spontaneous Emission
- Sudden Death of Entanglement
- Beating the channel capacity limit for linear photonic superdense coding
- Quantum information transfer using photons
- Dark periods and revivals of entanglement in a two qubit system
- Sudden death and sudden birth of entanglement in common structured reservoirs
- Experimental demonstration of entanglement assisted coding using a two-mode squeezed vacuum state
- Distributed super dense coding over noisy channels
- Multipartite Dense Coding vs. Quantum Correlation: Noise Inverts Relative Capability of Information Transfer
- Entanglement Dynamics of Noisy Random Circuits
- Deterministic dense coding and entanglement entropy
- Optimal dense coding with arbitrary pure entangled states
- Boundary effect of deterministic dense coding
- Practical scheme for quantum dense coding between three parties using microwave radiation in trapped ions
- Performance of Dense Coding and Teleportation for Random States --Augmentation via Pre-processing
- Optimal probabilistic dense coding schemes