Nonlocal memory assisted entanglement distribution in optical fibers

Abstract

Successful implementation of several quantum information and communication protocols require distributing entangled pairs of quantum bits in reliable manner. While there exists a substantial amount of recent theoretical and experimental activities dealing with non-Markovian quantum dynamics, experimental application and verification of the usefulness of memory-effects for quantum information tasks is still missing. We combine these two aspects and show experimentally that a recently introduced concept of nonlocal memory effects allows to protect and distribute polarization entangled pairs of photons in efficient manner within polarization-maintaining (PM) optical fibers. The introduced scheme is based on correlating the environments, i.e. frequencies of the polarization entangled photons, before their physical distribution. When comparing to the case without nonlocal memory effects, we demonstrate at least 12-fold improvement in the channel, or fiber length, for preserving the highly-entangled initial polarization states of photons against dephasing.

References in corpus (8)

• An Open-System Quantum Simulator with Trapped Ions
• Quantum teleportation using active feed-forward between two Canary Islands
• Assessing non-Markovian dynamics
• Quantum teleportation and entanglement distribution over 100-kilometre free-space channels
• Exciton-phonon information flow in the energy transfer process of photosynthetic complexes
• Robust photonic entanglement distribution via state-independent encoding onto decoherence-free subspace
• Nonlocal PMD compensation in the transmission of non-stationary streams of polarization entangled photons
• Two-step procedure to discriminate discordant from classical correlated or factorized states

Cited by in corpus (24)

• Non-Markovian dynamics in open quantum systems
• Efficient non-Markovian quantum dynamics using time-evolving matrix product operators
• Eternal non-Markovianity: from random unitary to Markov chain realisations
• Dynamical decoupling efficiency versus quantum non-Markovianity
• Refined Weak Coupling Limit: Coherence, Entanglement and Non-Markovianity
• Using the Environment to Understand non-Markovian Open Quantum Systems
• Non-Markovianity hinders Quantum Darwinism
• Witnessing non-Markovian effects of quantum processes through Hilbert-Schmidt speed
• Revealing memory effects in phase-covariant quantum master equations
• Reducing detection noise of a photon pair in a dispersive medium by controlling its spectral entanglement
• Non-Markovian dynamics in two-qubit dephasing channels with an application to superdense coding
• Non-Markovian dynamics under time-translation symmetry
• Detecting non-Markovianity via uncertainty relations
• Quantum tight-binding chains with dissipative coupling
• Activating information backflow with the assistance of quantum SWITCH
• Assessing non-Markovian dynamics through moments of the Choi state
• Photonic dephasing dynamics and role of initial correlations
• Experimental Snapshot Verification of non-Markovianity with Unknown System-Probe Coupling
• Non-Markovian dynamics of a two-level system in a bosonic bath and a Gaussian fluctuating environment with finite correlation time
• Engineering of Hong-Ou-Mandel interference with effective noise
• Emergent non-Markovianity and dynamical quantification of the quantum switch
• Interplay between Non-Markovianity of Noise and Dynamics in Quantum Systems
• Non-Markovian decoherence of a two-level system in a Lorentzian bosonic reservoir and a stochastic environment with finite correlation time
• Infinite dimensional dynamical maps