Updating the constraint on the quantum collapse models via kilogram masses

• URL: http://arxiv.org/abs/2411.17588v1
• Date: Tue, 26 Nov 2024 16:55:51 GMT
• Title: Updating the constraint on the quantum collapse models via kilogram masses
• Authors: Qi Dai, Haixing Miao, Yiqiu Ma,
• Abstract summary: Quantum mechanics governs all microscopic phenomena, encounters challenges when applied to macroscopic objects that exhibit classical behavior. To address this micro-macro disparity, collapse models such as the Continuous Spontaneous Localization (CSL) and Diosi-Penrose (DP) models have been proposed. We discuss the potential advantages of using deep-underground laboratories to test these quantum collapse models.
• Score: 12.134281667525308
• License:
• Abstract: Quantum mechanics, which governs all microscopic phenomena, encounters challenges when applied to macroscopic objects that exhibit classical behavior. To address this micro-macro disparity, collapse models such as the Continuous Spontaneous Localization (CSL) and Diosi-Penrose (DP) models have been proposed. These models phenomenologically modify quantum theory to reconcile its predictions with the observed classical behavior of macroscopic systems. Based on previous works\,([Phys.\,Rev\,D,\,95(8):084054\,(2017)] and [Phys.\,Rev.\,D,\,94:124036,\,(2016)]), an improved bound on the collapse model parameters is given using the updated acceleration noise data released from LISA Pathfinder\,([Phys.\,Rev.\,D, 110(4):042004,\,(2024)]). The CSL collapse rate is bounded to be at most $\lambda_{\rm CSL} \leq 8.3\times 10^{-11}$\,$s^{-1}$ at the mili-Hertz band when $r_{\rm CSL}=10^{-7}\,{\rm m}$, and the DP model's regularization cut-off scale is constraint to be $\sigma_{\rm DP}\sim 285.5$\,fm. Furthermore, we discuss the potential advantages of using deep-underground laboratories to test these quantum collapse models. Our results show the quiet seismic condition of the current deep-underground laboratory has the potential to further constrain the CSL collapse model to $\lambda_{\rm CSL}\leq3\times 10^{-11}\,{\rm s}^{-1}$ when $r_{\rm CSL}=10^{-7}\,{\rm m}$.

Related papers

• Slow Mixing of Quantum Gibbs Samplers [47.373245682678515]
  We present a quantum generalization of these tools through a generic bottleneck lemma. This lemma focuses on quantum measures of distance, analogous to the classical Hamming distance but rooted in uniquely quantum principles. Even with sublinear barriers, we use Feynman-Kac techniques to lift classical to quantum ones establishing tight lower bound $T_mathrmmix = 2Omega(nalpha)$.
  arXiv  Detail & Related papers  (2024-11-06T22:51:27Z)
• Calculating response functions of coupled oscillators using quantum phase estimation [40.31060267062305]
  We study the problem of estimating frequency response functions of systems of coupled, classical harmonic oscillators using a quantum computer. Our proposed quantum algorithm operates in the standard $s-sparse, oracle-based query access model. We show that a simple adaptation of our algorithm solves the random glued-trees problem in time.
  arXiv  Detail & Related papers  (2024-05-14T15:28:37Z)
• Experimental bounds on linear-friction dissipative collapse models from levitated optomechanics [0.0]
  A novel approach to include dissipation in collapse models has been recently proposed, and awaits experimental validation. Our work establishes experimental bounds on the so-constructed linear-friction dissipative Di'osi-Penrose (dDP) and Continuous Spontaneous localisation (dCSL) models.
  arXiv  Detail & Related papers  (2024-01-09T16:37:07Z)
• End-to-end complexity for simulating the Schwinger model on quantum computers [0.6449786007855248]
  We propose an efficient implementation of block-encoding of the Schwinger model Hamiltonian. As an end-to-end application, we compute the vacuum persistence amplitude. Our results provide insights into predictions about the performance of quantum computers in the FTQC era.
  arXiv  Detail & Related papers  (2023-11-29T06:36:11Z)
• Measurement-induced phase transition for free fermions above one dimension [46.176861415532095]
  Theory of the measurement-induced entanglement phase transition for free-fermion models in $d>1$ dimensions is developed. Critical point separates a gapless phase with $elld-1 ln ell$ scaling of the second cumulant of the particle number and of the entanglement entropy.
  arXiv  Detail & Related papers  (2023-09-21T18:11:04Z)
• A lower bound on the space overhead of fault-tolerant quantum computation [51.723084600243716]
  The threshold theorem is a fundamental result in the theory of fault-tolerant quantum computation. We prove an exponential upper bound on the maximal length of fault-tolerant quantum computation with amplitude noise.
  arXiv  Detail & Related papers  (2022-01-31T22:19:49Z)
• Bounding the finite-size error of quantum many-body dynamics simulations [6.657101721138396]
  We derive rigorous upper bounds on the Finite-size error (FSE) of local observables in real time quantum dynamics simulations from a product state. Our bounds are practically useful in determining the validity of finite-size results, as we demonstrate in simulations of the one-dimensional (1D) quantum Ising and Fermi-Hubbard models.
  arXiv  Detail & Related papers  (2020-09-25T04:30:25Z)
• Model-Based Reinforcement Learning with Value-Targeted Regression [48.92439657407732]
  We focus on finite-horizon episodic RL where the transition model $P$ belongs to a known family of models $mathcalP$. We derive a bound on the regret, which, in the special case of linear mixtures, the regret bound takes the form $tildemathcalO(dsqrtH3T)$.
  arXiv  Detail & Related papers  (2020-06-01T17:47:53Z)
• Measurement-induced entanglement transitions in many-body localized systems [0.0]
  We investigate measurement-induced entanglement transitions in a system where the underlying unitary dynamics are many-body localized (MBL) This work further demonstrates how the nature of the measurement-induced entanglement transition depends on the scrambling nature of the underlying unitary dynamics. This leads to further questions on the control and simulation of entangled quantum states by measurements in open quantum systems.
  arXiv  Detail & Related papers  (2020-05-27T19:26:12Z)
• Quantum Algorithms for Simulating the Lattice Schwinger Model [63.18141027763459]
  We give scalable, explicit digital quantum algorithms to simulate the lattice Schwinger model in both NISQ and fault-tolerant settings. In lattice units, we find a Schwinger model on $N/2$ physical sites with coupling constant $x-1/2$ and electric field cutoff $x-1/2Lambda$. We estimate observables which we cost in both the NISQ and fault-tolerant settings by assuming a simple target observable---the mean pair density.
  arXiv  Detail & Related papers  (2020-02-25T19:18:36Z)
• Narrowing the parameter space of collapse models with ultracold layered force sensors [0.0]
  Spontaneous collapse models are one of the few testable solutions so far proposed. Test mass is specifically designed to enhance the effect of CSL noise at the characteristic length $r_c=10-7$ m. Results are explicitly challenging a well-motivated region of the CSL parameter space proposed by Adler.
  arXiv  Detail & Related papers  (2020-02-22T22:35:35Z)

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.