Noise-assisted energy transport in electrical oscillator networks with off-diagonal dynamical disorder

León‐Montiel, Roberto de J.; Quiroz-Juárez, Mario A.; Quintero-Torres, Rafael; Domínguez-Juárez, Jorge Luis; Moya‐Cessa, H.; Torres, Juan P.; Aragón, J. L.

doi:10.1038/srep17339

Cited by 52 publications

(51 citation statements)

References 27 publications

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“…In its simplest configuration, reduced-OQS subject to Born-Markov premises can be investigated in finite quantum networks in which environmental effects are modeled by introducing pure dephasing or, more generally, non-dissipative noise, into the site energies [10]. At the single particle level, the relevance of such dephasing models have been highlighted in an interdisciplinary framework of studies ranging from biology [11,12], via quantum chemistry [13,14], and electronics [15] to photonics [16] and ultra-cold atoms [17]. As it turns out, single-particle dephasing models do not show any divergence from wave mechanics [10,[18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Endurance of quantum coherence due to particle indistinguishability in noisy quantum networks

Pérez-Leija¹,

Guzmán-Silva²,

León‐Montiel³

et al. 2018

npj Quantum Inf

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Quantum coherence, the physical property underlying fundamental phenomena such as multi-particle interference and entanglement, has emerged as a valuable resource upon which modern technologies are founded. In general, the most prominent adversary of quantum coherence is noise arising from the interaction of the associated dynamical system with its environment. Under certain conditions, however, the existence of noise may drive quantum and classical systems to endure intriguing nontrivial effects. In this vein, here we demonstrate, both theoretically and experimentally, that when two indistinguishable non-interacting particles co-propagate through quantum networks affected by non-dissipative noise, the system always evolves into a steady state in which coherences accounting for particle indistinguishabilty perpetually prevail. Furthermore, we show that the same steady state with surviving quantum coherences is reached even when the initial state exhibits classical correlations. *

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Section: Introductionmentioning

confidence: 99%

Endurance of quantum coherence due to particle indistinguishability in noisy quantum networks

Pérez-Leija¹,

Guzmán-Silva²,

León‐Montiel³

et al. 2018

npj Quantum Inf

Self Cite

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“…To elucidate the effect of the stochastic coupling between sites, we now compute the dynamics of a single excitation in a fully connected network composed by three sites. We have chosen this configuration, because it constitutes the simplest quantum network that one can investigate both theoretically and experimentally [5,24]. The energies of the sites are arbitrarily chosen to be ω 1 =ω 2 =ω 3 =5 ps −1 , whereas the coupling between them are set to κ 12 =1 ps −1 , and κ 13 =κ 23 =0.5 ps −1 .…”

Section: Single-particle Dynamicsmentioning

confidence: 99%

“…The study of quantum random walks in noisy environments have played a fundamental role in understanding non-trivial quantum phenomena observed in an interdisciplinary framework of studies ranging from biology [1,2], chemistry [3], materials science [4] and electronics [5], to photonics [6][7][8][9] and ultracold matter [10,11]. For many years, most of the research efforts had been focused on the propagation of single particles [12]; however, a great interest in describing the dynamics of correlated particles in noisy systems has recently arisen [13][14][15][16], mainly because it has been recognized that many-particle quantum correlations can be preserved in noisy networks by properly controlling the initial state of the particles, their statistics, indistinguishability or their type of interaction [17,18].…”

Section: Introductionmentioning

confidence: 99%

Two-particle quantum correlations in stochastically-coupled networks

et al. 2019

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Quantum walks in dynamically-disordered networks have become an invaluable tool for understanding the physics of open quantum systems. Although much work has been carried out considering networks affected by diagonal disorder, it is of fundamental importance to study the effects of fluctuating couplings. This is particularly relevant in materials science models, where the interaction forces may change depending on the species of the atoms being linked. In this work, we make use of stochastic calculus to derive a master equation for the dynamics of one and two non-interacting correlated particles in tight-binding networks affected by off-diagonal dynamical disorder. We show that the presence of noise in the couplings of a quantum network creates a pure-dephasing-like process that destroys all coherences in the single-particle Hilbert subspace. Moreover, we show that when two or more correlated particles propagate in the network, coherences accounting for particle indistinguishability are robust against the impact of off-diagonal noise, thus showing that it is possible, in principle, to find specific conditions for which many indistinguishable particles can traverse stochastically-coupled networks without losing their ability to interfere.

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“…Besides theoretical studies, ENAQT has been reported in experiments with superconducting quantum circuits [34], photonic setups [35], classical oscillators [36] and trapped-ions [37]. All these works show that in certain parameter regimes the efficiency of the energy transfer is enhanced by environmental noise.…”

Section: Introductionmentioning

confidence: 99%

Efficient quantum transport in a multi-site system combining classical noise and quantum baths

2020

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We study the population dynamics and quantum transport efficiency of a multi-site dissipative system driven by a random telegraph noise (RTN) by using a variational polaron master equation for both linear chain and ring configurations. By using two different environment descriptions-RTN only and a thermal bath+RTN-we show that the presence of the classical noise has a non-trivial role on quantum transport. We observe that there exist large areas of parameter space where the combined bath+RTN influence is clearly beneficial for populating the target state of the transport, and for average trapping time and transport efficiency when accounting for the presence of the reaction center via the use of the sink. This result holds for both of the considered intra-site coupling configurations including a chain and ring. In general, our formalism and achieved results provide a platform for engineering and characterizing efficient quantum transport in multi-site systems both for realistic environments and engineered systems.

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Noise-assisted energy transport in electrical oscillator networks with off-diagonal dynamical disorder

Cited by 52 publications

References 27 publications

Endurance of quantum coherence due to particle indistinguishability in noisy quantum networks

Endurance of quantum coherence due to particle indistinguishability in noisy quantum networks

Two-particle quantum correlations in stochastically-coupled networks

Efficient quantum transport in a multi-site system combining classical noise and quantum baths

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