Hidden quantum correlations in cavity-based quantum optics

• URL: http://arxiv.org/abs/2410.16479v1
• Date: Mon, 21 Oct 2024 20:08:18 GMT
• Title: Hidden quantum correlations in cavity-based quantum optics
• Authors: Bakhao Dioum, Virginia D'Auria, Giuseppe Patera,
• Abstract summary: In multimode optical systems, the spectral covariance matrix encodes all the information about quantum correlations between the quadratures of Gaussian states. Recent research has revealed that, in scenarios that are more common than previously thought, part of these correlations remain inaccessible to standard homodyne detection scheme.
• Score: 0.0
• License:
• Abstract: In multimode optical systems, the spectral covariance matrix encodes all the information about quantum correlations between the quadratures of Gaussian states. Recent research has revealed that, in scenarios that are more common than previously thought, part of these correlations remain inaccessible to standard homodyne detection scheme. Formally, this effect can be attributed to a non-real spectral covariance matrix. In this work, we provide a systematic framework and explicit criteria for identifying experimental configurations leading to such a behavior. This study will facilitate the proper exploitation and optimal engineering of CV quantum resources.

Related papers

• Universal quantum frequency comb measurements by spectral mode-matching [39.58317527488534]
  We present the first general approach to make arbitrary, one-shot measurements of a multimode quantum optical source. This approach uses spectral mode-matching, which can be understood as interferometry with a memory effect.
  arXiv  Detail & Related papers  (2024-05-28T15:17:21Z)
• Applications of flow models to the generation of correlated lattice QCD ensembles [69.18453821764075]
  Machine-learned normalizing flows can be used in the context of lattice quantum field theory to generate statistically correlated ensembles of lattice gauge fields at different action parameters. This work demonstrates how these correlations can be exploited for variance reduction in the computation of observables.
  arXiv  Detail & Related papers  (2024-01-19T18:33:52Z)
• Tailored and Externally Corrected Coupled Cluster with Quantum Inputs [0.0]
  We propose to use wavefunction overlaps obtained from a quantum computer as inputs for the classical split-amplitude techniques. We provide insights into which wavefunction preparation schemes have a chance of yielding quantum advantage.
  arXiv  Detail & Related papers  (2023-12-13T12:57:39Z)
• Spectral chaos bounds from scaling theory of maximally efficient quantum-dynamical scrambling [49.1574468325115]
  A key conjecture about the evolution of complex quantum systems towards an ergodic steady state, known as scrambling, is that this process acquires universal features when it is most efficient. We develop a single- parameter scaling theory for the spectral statistics in this scenario, which embodies exact self-similarity of the spectral correlations along the complete scrambling dynamics. We establish that scaling predictions are matched by a privileged process, and serve as bounds for other dynamical scrambling scenarios, allowing one to quantify inefficient or incomplete scrambling on all timescales.
  arXiv  Detail & Related papers  (2023-10-17T15:41:50Z)
• Universal spectral correlations in interacting chaotic few-body quantum systems [0.0]
  We show that the transition of the spectral form factor from the non-interacting to the strongly interacting case can be described as a simple combination of these two limiting cases. Our approach accurately captures spectral correlations in actual physical system, which we demonstrate for kicked coupled rotors.
  arXiv  Detail & Related papers  (2023-02-17T16:37:08Z)
• Photonic Quantum Computing For Polymer Classification [62.997667081978825]
  Two polymer classes visual (VIS) and near-infrared (NIR) are defined based on the size of the polymer gaps. We present a hybrid classical-quantum approach to the binary classification of polymer structures.
  arXiv  Detail & Related papers  (2022-11-22T11:59:52Z)
• Mixed state entanglement by efficient separation of quantum from classical correlations [0.0]
  Entanglement is the key resource for quantum technologies and is at the root of exciting many-body phenomena. Here, we devise an entanglement measure for such realistic open systems by filtering the entanglement spectrum of the mixed state. We showcase our scheme for spinless particles moving on a chain in presence of dephasing.
  arXiv  Detail & Related papers  (2022-02-15T14:12:16Z)
• Quantum Non-equilibrium Many-Body Spin-Photon Systems [91.3755431537592]
  dissertation concerns the quantum dynamics of strongly-correlated quantum systems in out-of-equilibrium states. Our main results can be summarized in three parts: Signature of Critical Dynamics, Driven Dicke Model as a Test-bed of Ultra-Strong Coupling, and Beyond the Kibble-Zurek Mechanism.
  arXiv  Detail & Related papers  (2020-07-23T19:05:56Z)
• Recovering quantum correlations in optical lattices from interaction quenches [0.0]
  Quantum simulations with ultra-cold atoms in optical lattices open up an exciting path towards understanding strongly interacting quantum systems. Currently a direct measurement of local coherent currents is out of reach. We show how to achieve that by measuring densities that are altered in response to quenches to non-interacting dynamics.
  arXiv  Detail & Related papers  (2020-05-18T18:03:33Z)
• A unified framework for spectral clustering in sparse graphs [47.82639003096941]
  We show that a conveniently parametrized form of regularized Laplacian matrix can be used to perform spectral clustering in sparse networks. We also exhibit important connections between this proposed matrix and the now popular non-backtracking matrix, the Bethe-Hessian matrix.
  arXiv  Detail & Related papers  (2020-03-20T10:58:37Z)
• Test of the unitary coupled-cluster variational quantum eigensolver for a simple strongly correlated condensed-matter system [0.0]
  The variational quantum eigensolver has been proposed as a low-depth quantum circuit. We show details associated with the factorized form of the unitary coupled-cluster variant of this algorithm. This work show some of the subtle issues one needs to take into account when applying this algorithm in practice, especially to condensed-matter systems.
  arXiv  Detail & Related papers  (2020-01-20T03:28:47Z)

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.