Quantum beat of coherence induced by non-Markovian effect

Zeng, Hao‐Sheng; Liao, Mingjie

doi:10.1140/epjd/e2020-100562-9

Cited by 3 publications

(5 citation statements)

References 31 publications

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“…Both the weak and strong monogamies are positive over the whole time evolution. The coherences are covariant with respect to the three types of noisy channel, i.e., the coherences of equations ( 28)- (31) are applied consecutively in the replacement of equation (26).…”

Section: Coherence Distribution For Open Three-qubit Ghz Statesmentioning

confidence: 99%

“…In summary, for the partially entangled state|Ψ⟩, under the action of the three types of noisy channel considered, there are both global, bipartite and monomeric coherences in the time evolution, and both the weak and strong monogamies are negative. However, the coherences are covariant with respect to the three types of noisy channel, i.e., under the replacement of equation (26), equations ( 33)-( 35) are successively replaced by equations ( 36)- (38) and equations ( 39)-(41).…”

Section: Coherence Distribution For Open Partially Entangled Statesmentioning

confidence: 99%

“…For non-Markovian processes, however, quantum coherence may oscillate in time [24,25]. This oscillation can give rise to some interesting phenomena, such as the quantum beating of coherence [26] and coherence trapping [27,28]. Recently, a novel concept for the cohering and decohering powers of quantum channels has been proposed [29,30], which is used to quantify the power of a quantum channel that creates or destroys the coherence of input quantum states.…”

Section: Introductionmentioning

confidence: 99%

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Distribution and monogamy of quantum coherence for open three-qubit systems under local noisy channels

Liao¹,

Zeng²

2021

Laser Phys. Lett.

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We study the distribution and monogamous relations of quantum coherence for three-qubit systems under the influence of local amplitude-damping, phase-damping and random unitary channels, respectively. We find that under the influence of the considered channels, the W state has both global and bipartite coherence, and its monogamy is always equal to zero. For the Greenberger–Horne–Zeilinger) state, however, there is only global coherence in the time evolution and the monogamy is always positive. We also present a partially entangled state, | Ψ ⟩ , which has global, bipartite, and monomeric coherences and negative monogamy during the whole time evolution.

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Section: Coherence Distribution For Open Three-qubit Ghz Statesmentioning

confidence: 99%

Section: Coherence Distribution For Open Partially Entangled Statesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Distribution and monogamy of quantum coherence for open three-qubit systems under local noisy channels

Liao¹,

Zeng²

2021

Laser Phys. Lett.

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“…Many works about the evolution of coherence for open quantum systems have been done. [ 27–35 ] Among them, the protection of quantum coherence from environmental noises has special importance [ 27–32 ] because of the potential applications. In the regime of Markovian dynamics, quantum coherence may be frozen for some special initial states of the open system undergoing some special noises.…”

Section: Introductionmentioning

confidence: 99%

“…[ 30,31 ] For the composite quantum system, it was found that the global type of system‐bath interaction may be beneficial for the protection of coherence. [ 32 ] In addition, the spreading, [ 33 ] sudden change, [ 34 ] and quantum beat [ 35 ] for quantum coherence in the evolution of open systems have also drawn attention.…”

Section: Introductionmentioning

confidence: 99%

Distribution and Evolution of Quantum Coherence for Open Multi‐Qubit Systems in Non‐Inertial Frames

Zeng

Cao

2021

Annalen der Physik

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The distribution and evolution of quantum coherence for multi‐qubit W and GHz states of Dirac fields in the non‐inertial frames and under the action of local environments is studied. It is found that the N‐qubit W state has all orders of coherence (from bipartite to N‐partite subsystems), and the coherence of the whole system is equal to the sum of all the bipartite coherences in the whole time evolution. However, the evolved N‐qubit GHz state has its coherence belonged only to the whole system and no coherence resides in any subsystems. Further, it is found that the expressions of coherence for both W and GHz states are covariant with respect to the transformation of decaying rates.

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Multipartite coherence and monogamy relationship under the Unruh effect in an open system

Zeng

2021

Quantum Inf Process

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Quantum beat of coherence induced by non-Markovian effect

Cited by 3 publications

References 31 publications

Distribution and monogamy of quantum coherence for open three-qubit systems under local noisy channels

Distribution and monogamy of quantum coherence for open three-qubit systems under local noisy channels

Distribution and Evolution of Quantum Coherence for Open Multi‐Qubit Systems in Non‐Inertial Frames

Multipartite coherence and monogamy relationship under the Unruh effect in an open system

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