Experimental emulation of quantum non-Markovian dynamics and coherence protection in the presence of information backflow

Khurana, Deepak; Agarwalla, Bijay Kumar; Mahesh, T. S.

doi:10.1103/physreva.99.022107

Cited by 38 publications

(21 citation statements)

References 75 publications

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“…Numerous studies have investigated the dynamics of quantified coherence in open quantum systems. [ 164–174 ] The authors of ref. [164] proposed a class of protocols for detecting and quantifying the non‐Markovianity of incoherent open system dynamics (IOSD).…”

Section: Experimental Progress On the Resource Theory Of Quantum Coherencementioning

confidence: 99%

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Experimental Progress on Quantum Coherence: Detection, Quantification, and Manipulation

Streltsov

Regula

et al. 2021

Adv Quantum Tech

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Quantum coherence is a fundamental property of quantum systems, separating quantum from classical physics. Recently, there has been significant interest in the characterization of quantum coherence as a resource, investigating how coherence can be extracted and used for quantum technological applications. In this work, the progress of this research is reviewed, focusing in particular on recent experimental efforts. After a brief review of the underlying theory, the main platforms for realizing the experiments are discussed: linear optics, nuclear magnetic resonance, and superconducting systems. Experimental detection and quantification of coherence, experimental state conversion and coherence distillation, and experiments investigating the dynamics of quantum coherence are then considered. Experiments exploring the connections between coherence and uncertainty relations, path information, and coherence of operations and measurements are also reviewed. Experimental efforts on multipartite and multilevel coherence are also discussed.

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Section: Experimental Progress On the Resource Theory Of Quantum Coherencementioning

confidence: 99%

“…[ 176 ] Related experimental results investigating the dynamical behavior of quantum coherence in open quantum systems have been reported in refs. [169, 174, 177].…”

Section: Experimental Progress On the Resource Theory Of Quantum Coherencementioning

confidence: 99%

Experimental Progress on Quantum Coherence: Detection, Quantification, and Manipulation

Streltsov

Regula

et al. 2021

Adv Quantum Tech

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“…Decoherence dynamics has been explored in experiments, see e.g. 38,39 . Recent proposals suggest to employ it for pure-state thermometry 40 .…”

Section: Introductionmentioning

confidence: 99%

Capturing non-Markovian dynamics with the reaction coordinate method

Anto-Sztrikacs,

Segal

2021

Preprint

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The reaction coordinate (RC) technique is emerging as a significant tool in the study of quantum dissipative dynamics and quantum thermodynamics. With the objective to further establish this tool, here we explore to what extent the method can capture non-Markovian dynamics of open quantum systems. As a case study, we focus on the pure decoherence model of a spin coupled to a harmonic reservoir. We compare the spin dynamics and measures for non-Markovianity from the exact analytical solution to simulations based on the RC method at the level of a second order quantum master equation. We find that the RC method can quantitatively capture non-Markovian effects at strong system-bath coupling and for structured baths. This is rationalized by the fact that the collective RC bath mode, which is made part of the system, maintains system-bath correlations. Lastly, we apply our RC method and study the spin-boson model in the non-Markovian regime.

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“…These developments have influenced, and have been influenced by, the increasing ability to realize experimentally reservoir engineering [10], various fundamental open system models in non-Markovian regimes [11], and the control of open system dynamics [12]. Indeed, a number of various physical platforms have been used for this purpose including, e.g., optical systems [11][12][13][14][15][16][17][18][19][20][21], NV centers [22,23], trapped ions [24], and NMR systems [25,26]. In addition to fundamental studies and tests, recent experimental work also includes some of the first exploitations of non-Markovian memory effects in basic quantum information protocols including, e.g., single-qubit Deutsch-Josza algorithm [27].…”

Section: Introductionmentioning

confidence: 99%

Experimental realization of high-fidelity teleportation via a non-Markovian open quantum system

et al. 2020

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Open quantum systems and study of decoherence are important for our fundamental understanding of quantum physical phenomena. For practical purposes, a large number of quantum protocols exist that exploit quantum resources, e.g., entanglement, which allows us to go beyond what is possible to achieve by classical means. We combine concepts from open quantum systems and quantum information science and give a proof-of-principle experimental demonstration-with teleportation-that it is possible to implement efficiently a quantum protocol via a non-Markovian open system. The results show that, at the time of implementation of the protocol, it is not necessary to have the quantum resource in the degree of freedom used for the basic protocol-as long as there exists some other degree of freedom or the environment of an open system, which contains useful resources. The experiment is based on a pair of photons, where their polarizations act as open system qubits and frequencies as their environments, while the path degree of freedom of one of the photons represents the state of Alice's qubit to be teleported to Bob's polarization qubit.

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Experimental emulation of quantum non-Markovian dynamics and coherence protection in the presence of information backflow

Cited by 38 publications

References 75 publications

Experimental Progress on Quantum Coherence: Detection, Quantification, and Manipulation

Experimental Progress on Quantum Coherence: Detection, Quantification, and Manipulation

Capturing non-Markovian dynamics with the reaction coordinate method

Experimental realization of high-fidelity teleportation via a non-Markovian open quantum system

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