High Resolution non-Markovianity in NMR

Abstract

Memoryless time evolutions are ubiquitous in nature but often correspond to a resolution-induced approximation, i.e. there are correlations in time whose effects are undetectable. Recent advances in the dynamical control of small quantum systems provide the ideal scenario to probe some of these effects. Here we experimentally demonstrate the precise induction of memory effects on the evolution of a quantum coin (qubit) by correlations engineered in its environment. In particular, we design a collisional model in Nuclear Magnetic Resonance (NMR) and precisely control the strength of the effects by changing the degree of correlation in the environment and its time of interaction with the qubit. We also show how these effects can be hidden by the limited resolution of the measurements performed on the qubit. The experiment reinforces NMR as a test bed for the study of open quantum systems and the simulation of their classical counterparts.

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• Temperature effects on quantum non-Markovianity via collision models
• Exploiting coherence for quantum thermodynamic advantage
• Validity of Landauer principle and quantum memory effects via collision models
• Enabling quantum non-Markovian dynamics by injection of classical colored noise
• Experimental realization of high-fidelity teleportation via non-Markovian open quantum system
• Witnessing non-Markovian effects of quantum processes through Hilbert-Schmidt speed
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• Revealing memory effects in phase-covariant quantum master equations
• Coarse graining a non-Markovian collisional model
• Probing Quantum Memory Effects with High Resolution
• Detection of quantum non-Markovianity close to the Born-Markov approximation
• Quantum simulation of non-Markovianity using the quantum Zeno effect
• Quantum gates by inverse engineering of a Hamiltonian
• Non-Markovianity Hierarchy of Gaussian Processes and Quantum Amplification
• Detecting non-Markovianity via uncertainty relations
• On the connection between microscopic description and memory effects in open quantum system dynamics
• Simulating open quantum dynamics on an NMR quantum processor using the Sz.-Nagy dilation algorithm
• Preserving quantum correlations and coherence with non-Markovianity
• Open-System Quantum Error Correction
• Preparations and Weak Quantum Control can Witness non-Markovianity
• Violation of the thermodynamic uncertainty relation in quantum collisional models
• Information back-flow in quantum non-Markovian dynamics and its connection to teleportation