Does anti-Unruh effect assist quantum entanglement and coherence?

• URL: http://arxiv.org/abs/2404.15180v1
• Date: Tue, 23 Apr 2024 16:20:48 GMT
• Title: Does anti-Unruh effect assist quantum entanglement and coherence?
• Authors: Shu-Min Wu, Xiao-Wei Teng, Jin-Xuan Li, Hao-Sheng Zeng, Tonghua Liu,
• Abstract summary: We analyze the Unruh and anti-Unruh effects based on the model of Unruh-DeWitt detector. We find that (i) the Unruh effect reduces quantum entanglement but enhances quantum coherence; (ii) the anti-Unruh effect enhances quantum entanglement but reduces quantum coherence.
• Score: 0.9437165725355702
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this paper, we use the concepts of quantum entanglement and coherence to analyze the Unruh and anti-Unruh effects based on the model of Unruh-DeWitt detector. For the first time, we find that (i) the Unruh effect reduces quantum entanglement but enhances quantum coherence; (ii) the anti-Unruh effect enhances quantum entanglement but reduces quantum coherence. This surprising result refutes the notion that the Unruh effect can only destroy quantum entanglement and coherence simultaneously, and that the anti-Unruh can only protect quantum resources. Consequently, it opens up a new source for discovering experimental evidence supporting the existence of the Unruh and anti-Unruh effects.

Related papers

• Simple Tests of Quantumness Also Certify Qubits [69.96668065491183]
  A test of quantumness is a protocol that allows a classical verifier to certify (only) that a prover is not classical. We show that tests of quantumness that follow a certain template, which captures recent proposals such as (Kalai et al., 2022) can in fact do much more. Namely, the same protocols can be used for certifying a qubit, a building-block that stands at the heart of applications such as certifiable randomness and classical delegation of quantum computation.
  arXiv  Detail & Related papers  (2023-03-02T14:18:17Z)
• System-environment dynamics of GHZ-like states in noninertial frames [14.401323451758975]
  Quantum coherence, quantum entanglement and quantum nonlocality are important resources in quantum information precessing. We study the dynamical evolution of the three-qubit GHZ-like states in non-inertial frame when one and/or two qubits undergo decoherence.
  arXiv  Detail & Related papers  (2022-12-30T03:36:48Z)
• Certified Robustness of Quantum Classifiers against Adversarial Examples through Quantum Noise [68.1992787416233]
  We show that adding quantum random rotation noise can improve robustness in quantum classifiers against adversarial attacks. We derive a certified robustness bound to enable quantum classifiers to defend against adversarial examples.
  arXiv  Detail & Related papers  (2022-11-02T05:17:04Z)
• The power of noisy quantum states and the advantage of resource dilution [62.997667081978825]
  Entanglement distillation allows to convert noisy quantum states into singlets. We show that entanglement dilution can increase the resilience of shared quantum states to local noise.
  arXiv  Detail & Related papers  (2022-10-25T17:39:29Z)
• Quantifying Quantum Causal Influences [0.8399688944263843]
  We propose the quantum version of the most common causality quantifier, the average causal effect (ACE), measuring how much a target quantum system is changed by interventions on its presumed cause. Not only it offers an innate manner to quantify causation in two-qubit gates but also in alternative quantum computation models such as the measurement-based version. Considering quantum teleportation, we show that any pure entangled state offers an advantage in terms of causal effects as compared to separable states.
  arXiv  Detail & Related papers  (2022-10-09T17:17:42Z)
• Spin operator, Bell nonlocality and Tsirelson bound in quantum-gravity induced minimal-length quantum mechanics [0.0]
  We show that the spin operator acquires a momentum-dependent contribution in quantum mechanics equipped with a minimal length. Among other consequences, this modification induces a form of quantum nonlocality stronger than the one arising in ordinary quantum mechanics.
  arXiv  Detail & Related papers  (2022-07-21T11:22:33Z)
• Genuine multipartite entanglement subject to the Unruh and anti-Unruh effects [0.0]
  We study the acceleration effect on the genuine tripartite entanglement for one or two accelerated detector(s) coupled to the vacuum field. Surprisingly, we findthat the increase and decrease in entanglement have no definite correspondence with the Unruh and anti-Unruh effects.
  arXiv  Detail & Related papers  (2022-07-04T08:38:36Z)
• Towards understanding the power of quantum kernels in the NISQ era [79.8341515283403]
  We show that the advantage of quantum kernels is vanished for large size datasets, few number of measurements, and large system noise. Our work provides theoretical guidance of exploring advanced quantum kernels to attain quantum advantages on NISQ devices.
  arXiv  Detail & Related papers  (2021-03-31T02:41:36Z)
• 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)
• Quantum teleportation, entanglement, and Bell nonlocality in Unruh channel [0.0]
  The Unruh effect acts as a quantum channel and we call it the Unruh Channel. We study the effects of the Unruh channel on various facets of quantum correlations, such as the quantum teleportation, entanglement, and Bell violations for a Dirac field inequality mode.
  arXiv  Detail & Related papers  (2020-06-14T10:21:31Z)
• Quantum time dilation: A new test of relativistic quantum theory [91.3755431537592]
  A novel quantum time dilation effect is shown to arise when a clock moves in a quantum superposition of two relativistic velocities. This effect is argued to be measurable using existing atomic interferometry techniques, potentially offering a new test of relativistic quantum theory.
  arXiv  Detail & Related papers  (2020-04-22T19:26:53Z)

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.