Distillability sudden death and sudden birth in a two-qutrit system under decoherence at finite temperature

Guo, You-neng; Mao-Fa, Fang; Wang, Guoyou; Zeng, Ke

doi:10.1007/s11128-016-1296-x

Cited by 4 publications

(2 citation statements)

References 45 publications

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“…where ρ A (0) = |ψ A (0) ψ A (0)| is the atomic initial density matrix and E i represents the single-qutrit Kraus operator [26] for the AD noise which are given as The weak measurement we considered is a positiveoperator-valued measurement (POVM) originally discussed in Refs. [27,28].…”

Section: -2mentioning

confidence: 99%

Entropy squeezing for a V-type three-level atom interacting with a single-mode field and passing through the amplitude damping channel with weak measurement*

Zhang¹,

Mao-Fa²

2021

Chinese Phys. B

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The entropy squeezing of a V-type three-level atom interacting with a single-mode field and passing through the amplitude damping channel is investigated in detail. Our results show that when coupled to the single-mode field, the atom in appropriate initial states can not only generate obvious entropy squeezing but also keep in the optimal squeezing state, while passing through the amplitude damping channel, the atom can generate entropy squeezing under the control of the weak measurement. Besides, it is proved again that as a measurement method for atomic squeezing, the entropy squeezing is precise and effective. Therefore our work is instructive for experiments in preparing three-level system information resource with ultra-low quantum noise.

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Section: -2mentioning

confidence: 99%

Entropy squeezing for a V-type three-level atom interacting with a single-mode field and passing through the amplitude damping channel with weak measurement*

Zhang¹,

Mao-Fa²

2021

Chinese Phys. B

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“…r > 0.5 corresponds to a lower temperature region, and r 0.5 corresponds to a higher temperature region; in particular, when the temperature of the noisy channel is regarded as zero, it corresponds to r = 1. Therefore, the amplitude damping channel at finite temperature can be obtained as [41,42]…”

Section: Dynamics Of a Qutrit System Under Amplitude Damping Channels...mentioning

confidence: 99%

Exploration of the entropic uncertainty relation for a qutrit system under decoherence

et al. 2018

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In this paper, we have performed a detailed investigation of the dynamics of the entropic uncertainty relation for a qutrit with and without a memory system under an amplitude damping channel at finite temperature. We focus mainly on how the temperature affects the entropic uncertainty relation. The results show that the dynamics of the entropic uncertainty exhibits a non-monotonic phenomenon. As r increases (r is usually a function of temperature), the amount of the entropic uncertainty will first increase and then subsequently decrease. Moreover, based on measurement reversal from a weak measurement, we have also investigated the reduction of the entropic uncertainty for a qutrit system under decoherence. It has been found that the measurement reversal technique can always reduce the entropic uncertainty effectively at finite temperature, while the prior weak measurement technique is valid only at a lower temperature but fails at a higher channel temperature. Finally, a phenomenological explanation of our results is also presented.

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Geometric Quantum Discord of a Two-Qutrit System Under Decoherence at Finite Temperature

et al. 2018

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Distillability sudden death and sudden birth in a two-qutrit system under decoherence at finite temperature

Cited by 4 publications

References 45 publications

Entropy squeezing for a V-type three-level atom interacting with a single-mode field and passing through the amplitude damping channel with weak measurement*

Entropy squeezing for a V-type three-level atom interacting with a single-mode field and passing through the amplitude damping channel with weak measurement*

Exploration of the entropic uncertainty relation for a qutrit system under decoherence

Geometric Quantum Discord of a Two-Qutrit System Under Decoherence at Finite Temperature

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