2016
DOI: 10.1088/0256-307x/33/7/070307
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Controlling Entropic Uncertainty in the Presence of Quantum Memory by Non-Markovian Effects and Atom-Cavity Couplings

Abstract: Based on the time-convolutionless master-equation approach, the entropic uncertainty in the presence of quantum memory is investigated for a two-atom system in two dissipative cavities. We find that the entropic uncertainty can be controlled by the non-Markovian effect and the atom-cavity coupling. The results show that increasing the atom-cavity coupling can enlarge the oscillating frequencies of the entropic uncertainty and can decrease the minimal value of the entropic uncertainty. Enhancing the non-Markovi… Show more

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Cited by 8 publications
(3 citation statements)
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“…In a realistic regime, it is impossible to isolate a quantum system from its surroundings subjected to information loss in the form of dissipation and decoherence. Thus, it is logical to expect that the entropic uncertainty relation can be affected by the environmental factor [29][30][31][32][33][34][35][36][37][38][39][40]. One can also reduce the entropic uncertainty lower bound in the dissipative environment by using quantum weak measurements [41,42].…”
Section: Introductionmentioning
confidence: 99%
“…In a realistic regime, it is impossible to isolate a quantum system from its surroundings subjected to information loss in the form of dissipation and decoherence. Thus, it is logical to expect that the entropic uncertainty relation can be affected by the environmental factor [29][30][31][32][33][34][35][36][37][38][39][40]. One can also reduce the entropic uncertainty lower bound in the dissipative environment by using quantum weak measurements [41,42].…”
Section: Introductionmentioning
confidence: 99%
“…In the most recent work, it has been assumed that the quantum memory B have an interaction with environment. In this situation the effects of environmental parameter on the bound of QMA-EUR is studied [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39]41]. The bound of QMA-EUR can be control in a dissipative environment by using the quantum weak measurements and measurement reversal [40,42].…”
Section: Introductionmentioning
confidence: 99%
“…Because quantum information is provided by the quantum register, the significance of QMA EUR lies in that the quantum information of the quantum memory system can help to reduce or eliminate the measurement uncertainty, which has been confirmed in recent experiments. [21,22] At present, many researchers have studied the relation between quantum correlation, quantum coherence, and entropic uncertainty, and some quantum operations of quantum states are proposed for stable systems, quantum correlation of protection systems, and the reduction of entropic uncertainty, [23][24][25][26][27][28][29] for example, the behavior of quantummemory assisted entropic uncertainty under different noises, and the relations between the quantum-memory-assisted entropic uncertainty principle with teleportation and entanglement witnessed, [30] and influence of quantum discord and classical correlation on the entropic uncertainty in the presence of quantum memory. [31] It is well known that any environment can be classified as Markovian without the memory effect or non-Markvian with the memory effect.…”
Section: Introductionmentioning
confidence: 99%