Quantum correlations and decoherence dynamics for a qutrit–qutrit system under random telegraph noise

Abstract We study the dimensionless time evolution of the logarithmic negativity and geometric quantum discord of a qubit-qutrit XXX spin model under the both Markovian and non-Markovian noise channels. We find that at a special temperature interval the quantum entanglement based on the logarithmic negativity reveals entanglement sudden deaths together with revivals. The revival phenomenon is due to the non-Markovianity resulting from the feedback effect of the environment. At high temperatures, the scenario of death and revival disappears. The geometric quantum discord evolves alternatively versus time elapsing with damped amplitudes until the system reaches steady state. It is demonstrated that the dynamics of entanglement negativity undergoes substantial changes by varying temperature, and it is much more fragile against the temperature rather than the geometric quantum discord. The real complex heterodinuclear [Ni(dpt (H2O)Cu(pba)]·2H2O [with pba =1,3-propylenebis(oxamato) and dpt = bis-(3-aminopropyl)amine] is an experimental representative of our considered bipartite qubit-qutrit system that may show remarkable entanglement deaths and revivals at relatively high temperatures and high magnetic field that is comparable with the strength of the exchange interaction J between Cu+2 and Ni+2 ions, i.e., kBT ≈ J and μBB ≈ J.

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Qubit systems subject to unbalanced random telegraph noise: quantum correlations, non-Markovianity and teleportation

The European Physical Journal D ◽

10.1140/epjd/e2018-90450-x ◽

2018 ◽

Vol 72 (12) ◽

Cited By ~ 5

Author(s):

Simone Daniotti ◽

Claudia Benedetti ◽

Matteo G. A. Paris

Keyword(s):

Quantum Correlations ◽

Random Telegraph Noise ◽

Telegraph Noise

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Dynamics of tripartite quantum correlations in mixed classical environments: The joint effects of the random telegraph and static noises

International Journal of Quantum Information ◽

10.1142/s0219749917500381 ◽

2017 ◽

Vol 15 (05) ◽

pp. 1750038 ◽

Cited By ~ 7

Author(s):

Lionel Tenemeza Kenfack ◽

Martin Tchoffo ◽

Georges Collince Fouokeng ◽

Lukong Cornelius Fai

Keyword(s):

Quantum Discord ◽

Direct Interaction ◽

Quantum Correlations ◽

Switching Rate ◽

Initial State ◽

Random Telegraph Noise ◽

Joint Effects ◽

Telegraph Noise ◽

Qubit System ◽

Static Noise

In the present paper, the joint effects of two kinds of classical environmental noises, without direct interaction among each other, on the dynamics of quantum correlations (QCs) of a three-qubit system coupled in independent environments is investigated. More precisely, we join the random telegraph noise (RTN) and the static noise (SN) and focus on the dynamics of entanglement and quantum discord (QD) when the qubits are initially prepared in the GHZ- and W-type states. The overall noise affecting the qubits is obtained by combining the RTN and SN in two different setups. The results show that the disorder of the environmental noise as well as its memory qualities and the purity of the initial state considered play a crucial role in the time evolution of the system in such a way that the dynamics of QCs can be controlled by varying them. In fact, we show that, depending on the initial state and noise regime considered, the rate of collapse of QCs may either decrease or increase with the increase of the degree of disorder of the SN, the switching rate of the RTN and the purity of the initial state.

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The Dynamics of Three Different Entropic Measures of Quantum Correlations in Mixed Bipartite State Coupled with Classical Environments

Fluctuation and Noise Letters ◽

10.1142/s0219477518500232 ◽

2018 ◽

Vol 17 (03) ◽

pp. 1850023 ◽

Cited By ~ 2

Author(s):

Mahmood Shamirzaie ◽

Salman Khan

Keyword(s):

Quantum Discord ◽

Conditional Entropy ◽

Quantum Correlations ◽

Random Telegraph Noise ◽

Geometric Quantum Discord ◽

Bipartite State ◽

Telegraph Noise ◽

Initial States ◽

Qubit States ◽

Static Noise

The dynamics of three different entropic measures of quantum correlations in mixed bipartite qubit states in the presence of two different classical noises, the static noise (SN) and the random telegraph noise (RTN), are investigated. The three entropic measures of quantum correlations correspond to one-way information deficit, geometric quantum discord and the cubic information. General analytic relations for each quantifier in the two configurations are obtained. In both configurations, the minimized value of each measure of quantum correlations corresponds to the conditional entropy of the same projectors. It is shown that one-way information deficit captures more correlations in highly mixed initial states. On the contrary, in both configurations the cubic information reduces to the geometric quantum discord and captures more correlations for highly pure initial states. The periodic revival of each measure of quantum correlation is more prominent in the case of RTN.

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Extraction of Trap Energy Distribution in Proton-Irradiated Focal Plane Arrays using a High Precision Random Telegraph Noise Detection Algorithm

IEEE Transactions on Instrumentation and Measurement ◽

10.1109/tim.2021.3066543 ◽

2021 ◽

pp. 1-1

Author(s):

Victor D. Pepel ◽

Preston T. Webster ◽

Julie V. Logan ◽

Christian P. Morath

Keyword(s):

Energy Distribution ◽

High Precision ◽

Focal Plane ◽

Detection Algorithm ◽

Focal Plane Arrays ◽

Noise Detection ◽

Random Telegraph Noise ◽

Trap Energy ◽

Telegraph Noise

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Investigation on the amplitude distribution of random telegraph noise (RTN) in nanoscale MOS devices

2016 IEEE International Nanoelectronics Conference (INEC) ◽

10.1109/inec.2016.7589332 ◽

2016 ◽

Cited By ~ 5

Author(s):

Zexuan Zhang ◽

Shaofeng Guo ◽

Xiaobo Jiang ◽

Runsheng Wang ◽

Ru Huang ◽

...

Keyword(s):

Amplitude Distribution ◽

Random Telegraph Noise ◽

Mos Devices ◽

Telegraph Noise

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Design of True Random Number Circuit with Controllable Frequency

Electronics ◽

10.3390/electronics10131517 ◽

2021 ◽

Vol 10 (13) ◽

pp. 1517

Author(s):

Xinsheng Wang ◽

Xiyue Wang

Keyword(s):

Random Number ◽

Noise Source ◽

State Of The Art ◽

Building Blocks ◽

Encryption Algorithm ◽

Random Numbers ◽

Random Number Generators ◽

Random Telegraph Noise ◽

Telegraph Noise ◽

Novel Method

True random number generators (TRNGs) have been a research hotspot due to secure encryption algorithm requirements. Therefore, such circuits are necessary building blocks in state-of-the-art security controllers. In this paper, a TRNG based on random telegraph noise (RTN) with a controllable rate is proposed. A novel method of noise array circuits is presented, which consists of digital decoder circuits and RTN noise circuits. The frequency of generating random numbers is controlled by the speed of selecting different gating signals. The results of simulation show that the array circuits consist of 64 noise source circuits that can generate random numbers by a frequency from 1 kHz to 16 kHz.

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