Entropic uncertainty and quantum non-classicality of Unruh-Dewitt detectors in relativity
- URL: http://arxiv.org/abs/2411.16135v1
- Date: Mon, 25 Nov 2024 06:49:50 GMT
- Title: Entropic uncertainty and quantum non-classicality of Unruh-Dewitt detectors in relativity
- Authors: Yu-Kun Zhang, Li-Juan Li, Xue-Ke Song, Liu Ye, Dong Wang,
- Abstract summary: We investigate the impact of Unruh thermal noise on the quantum-memory-assisted entropic uncertainty and quantum correlation regarding a pair of Unruh-Dewitt detectors.
- Score: 6.268224960076935
- License:
- Abstract: An object moving with the acceleration will change the temperature of environment around it, because of the presence of the Unruh thermal effect. In this work, we investigate the impact of Unruh thermal noise on the quantum-memory-assisted {entropic} uncertainty and quantum correlation regarding a pair of Unruh-Dewitt detectors. Specifically, we examine how the acceleration, the coupling strength between the external field and the detector, and the initial state affect the uncertainty and the system's quantum discord. It turns out that the Unruh effect will result in the loss of the systemic quantumness and inflation of the uncertainty. Moreover, it is revealed that the uncertainty is reversely correlated with the system's quantum discord. Thereby, it is believed that our investigations provide new insights into understanding the behavior of objects in the relativistic background.
Related papers
- Expressibility, entangling power and quantum average causal effect for causally indefinite circuits [37.69303106863453]
We implement parameterized quantum circuits with definite and indefinite causal order.
One of these is the expressibility, which measures how uniformly a given quantum circuit can reach the whole Hilbert space.
We find a correlation between the quantum average causal effect and the entangling power.
arXiv Detail & Related papers (2024-11-13T13:53:02Z) - Role of Quantum Coherence in Kinetic Uncertainty Relations [0.0]
Kinetic Uncertainty Relation (KUR) bounds the signal-to-noise ratio of currents in terms of the number of transitions per unit time.
The precise connection between KUR violations and quantum coherence has so far remained elusive.
arXiv Detail & Related papers (2024-07-19T09:26:16Z) - Crossing exceptional points in non-Hermitian quantum systems [41.94295877935867]
We reveal the behavior of two-photon quantum states in non-Hermitian systems across the exceptional point.
We demonstrate a switching in the quantum interference of photons directly at the exceptional point.
arXiv Detail & Related papers (2024-07-17T14:04:00Z) - Effect of the readout efficiency of quantum measurement on the system entanglement [44.99833362998488]
We quantify the entanglement for a particle on a 1d quantum random walk under inefficient monitoring.
We find that the system's maximal mean entanglement at the measurement-induced quantum-to-classical crossover is in different ways by the measurement strength and inefficiency.
arXiv Detail & Related papers (2024-02-29T18:10:05Z) - The effects of detuning on entropic uncertainty bound and quantum
correlations in dissipative environment [0.0]
We will use the entropic uncertainty relation in the presence of quantum memory.
The effects of the detuning between the transition frequency of a quantum memory and the center frequency of a cavity on entrpic uncertainty bound and quantum correlation between quantum memory and measured particle will be studied.
arXiv Detail & Related papers (2024-01-18T08:04:53Z) - Effects of intrinsic decoherence on discord-like correlation measures of
two-qubit spin squeezing model [0.0]
Quantum correlation behaviours in the two-qubit spin squeezing model are studied under the influence of intrinsic decoherence.
We show that the entanglement suffers from intrinsic decoherence and exhibits sudden death, whereas the other measures are more robust against intrinsic decoherence.
arXiv Detail & Related papers (2023-03-04T11:06:54Z) - Quantum spin-flavour memory of ultrahigh-energy neutrino [0.0]
We study uncertainties related to the interstellar ultrahigh-energy neutrino.
We introduce a novel concept: quantum spin-flavour memory.
We find that while most measures of quantum correlations show their irrelevance, the quantum spin-flavour is the quantifier of the quantum spin-flavour memory.
arXiv Detail & Related papers (2022-02-07T19:54:05Z) - Characterization of the measurement uncertainty dynamics in an open
system [6.417948558033516]
Information entropy can perfectly describe this type of randomness in information theory, because entropy can measure the degree of chaos in a given quantum system.
In this paper, we investigate the dynamical features of the von Neumann entropic uncertainty in the presence of quantum memory.
We put forward some effective operation strategies to reduce the magnitude of the measurement uncertainty under the open systems.
arXiv Detail & Related papers (2021-10-22T15:07:08Z) - Sensing quantum chaos through the non-unitary geometric phase [62.997667081978825]
We propose a decoherent mechanism for sensing quantum chaos.
The chaotic nature of a many-body quantum system is sensed by studying the implications that the system produces in the long-time dynamics of a probe coupled to it.
arXiv Detail & Related papers (2021-04-13T17:24:08Z) - Simulation of Collective Neutrino Oscillations on a Quantum Computer [117.44028458220427]
We present the first simulation of a small system of interacting neutrinos using current generation quantum devices.
We introduce a strategy to overcome limitations in the natural connectivity of the qubits and use it to track the evolution of entanglement in real-time.
arXiv Detail & Related papers (2021-02-24T20:51:25Z) - Entropic Uncertainty Relations and the Quantum-to-Classical transition [77.34726150561087]
We aim to shed some light on the quantum-to-classical transition as seen through the analysis of uncertainty relations.
We employ entropic uncertainty relations to show that it is only by the inclusion of imprecision in our model of macroscopic measurements that we can prepare a system with two simultaneously well-defined quantities.
arXiv Detail & Related papers (2020-03-04T14:01:17Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.