Enhancing nonlocal advantage of quantum coherence in correlated quantum channels

Xie, Yu-Xia; Qin, Zhiyong

doi:10.1007/s11128-020-02870-8

Cited by 20 publications

(9 citation statements)

References 91 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, the concept of non-local advantage of quantum coherence i.e. NAQC was introduced in [13,50] that can provide an indication of the existence of quantumness in terms of entanglement and steerability in the system. Coherence of a system represented by the state ρ can be quantified by l 1 norm which in the eigen basis of Pauli spin matrix σ i (i = x, y, z) is defined as [13]…”

Section: Quantum Correlation Measuresmentioning

confidence: 99%

Can NSI affect non-local correlations in neutrino oscillations?

Yadav,

Sarkar,

Dixit

et al. 2022

Preprint

View full text Add to dashboard Cite

Non-local correlations in entangled systems are usually captured by measures such as Bell's inequality violation. It was recently shown that in neutrino systems, a measure of non-local advantage of quantum coherence (NAQC) can be considered as a stronger measure of non-local correlations as compared to the Bell's inequality violation. In this work, we analyze the effects of non standard interaction (NSI) on these measures in the context of two flavour neutrino oscillations for DUNE, MINOS, T2K, KamLAND, JUNO and Daya Bay experimental set-ups. We find that even in the presence of NSI, Bell's inequality violation occurs in the entire energy range whereas the NAQC violation is observed only in some specific energy range justifying the more elementary feature of NAQC. Further, we find that NSI can enhance the violation of NAQC and Bell's inequality parameter in the higher energy range of a given experimental set-up; these enhancements being maximal for the KamLAND experiment. However, the possible enhancement in the violation of the Bell's inequality parameter over the standard model prediction can be up to 11% whereas for NAQC it is 7%. Thus although NAQC is a comparatively stronger witness of nonclassicality, it shows lesser sensitivity to NSI effects in comparison to the Bell's inequality parameter.

show abstract

Section: Quantum Correlation Measuresmentioning

confidence: 99%

Can NSI affect non-local correlations in neutrino oscillations?

Yadav,

Sarkar,

Dixit

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…[59] The decoherence of ASC in a two-qubit state induced by correlated noise channels can be suppressed by controlling the consecutive uses of the channels. [60,61] Quantum systems are exposed to transmission channels that allow quantum entanglement, steering, nonlocality, and coherence to leak or decay over time. [62,63] In this work, we prefer classical over non-classical ones when it comes to transmitting channels.…”

Section: Introductionmentioning

confidence: 99%

“…[ 59 ] The decoherence of ASC in a two‐qubit state induced by correlated noise channels can be suppressed by controlling the consecutive uses of the channels. [ 60,61 ]…”

Section: Introductionmentioning

confidence: 99%

Two‐Qubit Steerability, Nonlocality, and Average Steered Coherence under Classical Dephasing Channels

et al. 2023

View full text Add to dashboard Cite

When two qubits are prepared in a mixture of two Bell states and exposed to local transmission channels, the dynamics of steerability, Bell nonlocality, and average steered coherence are investigated. Disorders are assumed to influence the channels, resulting in either Markovian Ornstein-Uhlenbeck noise or non-Markovian static noise in two models: a single noisy channel or two local noisy channels. Their findings show that the type and number of classical channels, noise, and initial state must be in an optimal setting in order to preserve quantum correlations.

show abstract

“…[22][23][24], which considers the memory induced by the classical correlations between multiple actions of the channels. The influence of correlated channels on quantum coherence, [25][26][27][28] quantum teleportation, [29] quantum Fisher information, [30] and measurement uncertainty [31] have been explored recently.…”

Section: Introductionmentioning

confidence: 99%

Robustness of two-qubit and three-qubit states in correlated quantum channels

Wang

Peng

et al. 2022

Chinese Phys. B

View full text Add to dashboard Cite

We investigate how the correlated actions of quantum channels affect the robustness of entangled states. We consider the Bell-like state and random two-qubit pure states in the correlated depolarizing, bit flip, bit-phase flip, and phase flip channels. It is found that the robustness of two-qubit pure states can be noticeably enhanced due to the correlations between consecutive actions of these noisy channels, and the Bell-like state is always the most robust state. We also consider the robustness of three-qubit pure states in correlated noisy channels. For the correlated bit flip and phase flip channels, the result shows that although the most robust and most fragile states are locally unitary equivalent, they exhibit different robustness in different correlated channels, and the effect of channel correlations on them is also significantly different. However, for the correlated depolarizing and bit-phase flip channels, the robustness of two special three-qubit pure states is exactly the same. Moreover, compared with the random three-qubit pure states, they are neither the most robust states nor the most fragile states.

show abstract

Enhancing nonlocal advantage of quantum coherence in correlated quantum channels

Cited by 20 publications

References 91 publications

Can NSI affect non-local correlations in neutrino oscillations?

Can NSI affect non-local correlations in neutrino oscillations?

Two‐Qubit Steerability, Nonlocality, and Average Steered Coherence under Classical Dephasing Channels

Robustness of two-qubit and three-qubit states in correlated quantum channels

Contact Info

Product

Resources

About