Demonstrating the power of quantum computers, certification of highly entangled measurements and scalable quantum nonlocality

• URL: http://arxiv.org/abs/2009.14028v2
• Date: Tue, 22 Jun 2021 12:56:05 GMT
• Title: Demonstrating the power of quantum computers, certification of highly entangled measurements and scalable quantum nonlocality
• Authors: Elisa B\"aumer, Nicolas Gisin, Armin Tavakoli
• Abstract summary: We demonstrate the power of state-of-the-art IBM quantum computers in correlation experiments inspired by quantum networks. Our experiments feature up to 12 qubits and require the implementation of paradigmatic Bell-State Measurements.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Increasingly sophisticated quantum computers motivate the exploration of their abilities in certifying genuine quantum phenomena. Here, we demonstrate the power of state-of-the-art IBM quantum computers in correlation experiments inspired by quantum networks. Our experiments feature up to 12 qubits and require the implementation of paradigmatic Bell-State Measurements for scalable entanglement-swapping. First, we demonstrate quantum correlations that defy classical models in up to nine-qubit systems while only assuming that the quantum computer operates on qubits. Harvesting these quantum advantages, we are able to certify 82 basis elements as entangled in a 512-outcome measurement. Then, we relax the qubit assumption and consider quantum nonlocality in a scenario with multiple independent entangled states arranged in a star configuration. We report quantum violations of source-independent Bell inequalities for up to ten qubits. Our results demonstrate the ability of quantum computers to outperform classical limitations and certify scalable entangled measurements.

Related papers

• The curse of random quantum data [62.24825255497622]
  We quantify the performances of quantum machine learning in the landscape of quantum data. We find that the training efficiency and generalization capabilities in quantum machine learning will be exponentially suppressed with the increase in qubits. Our findings apply to both the quantum kernel method and the large-width limit of quantum neural networks.
  arXiv  Detail & Related papers  (2024-08-19T12:18:07Z)
• A Quantum-Classical Collaborative Training Architecture Based on Quantum State Fidelity [50.387179833629254]
  We introduce a collaborative classical-quantum architecture called co-TenQu. Co-TenQu enhances a classical deep neural network by up to 41.72% in a fair setting. It outperforms other quantum-based methods by up to 1.9 times and achieves similar accuracy while utilizing 70.59% fewer qubits.
  arXiv  Detail & Related papers  (2024-02-23T14:09:41Z)
• Quantum data learning for quantum simulations in high-energy physics [55.41644538483948]
  We explore the applicability of quantum-data learning to practical problems in high-energy physics. We make use of ansatz based on quantum convolutional neural networks and numerically show that it is capable of recognizing quantum phases of ground states. The observation of non-trivial learning properties demonstrated in these benchmarks will motivate further exploration of the quantum-data learning architecture in high-energy physics.
  arXiv  Detail & Related papers  (2023-06-29T18:00:01Z)
• 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)
• Scalable Simulation of Quantum Measurement Process with Quantum Computers [13.14263204660076]
  We propose qubit models to emulate the quantum measurement process. One model is motivated by single-photon detection and the other by spin measurement. We generate Schr"odinger cat-like state, and their corresponding quantum circuits are shown explicitly.
  arXiv  Detail & Related papers  (2022-06-28T14:21:43Z)
• Scalable measures of magic resource for quantum computers [0.0]
  We introduce efficient measures of magic resource for pure quantum states with a sampling cost independent of the number of qubits. We show the transition of classically simulable stabilizer states into intractable quantum states on the IonQ quantum computer.
  arXiv  Detail & Related papers  (2022-04-21T12:50:47Z)
• Efficient criteria of quantumness for a large system of qubits [58.720142291102135]
  We discuss the dimensionless combinations of basic parameters of large, partially quantum coherent systems. Based on analytical and numerical calculations, we suggest one such number for a system of qubits undergoing adiabatic evolution.
  arXiv  Detail & Related papers  (2021-08-30T23:50:05Z)
• Perturbative quantum simulation [2.309018557701645]
  We introduce perturbative quantum simulation, which combines the complementary strengths of the two approaches. The use of a quantum processor eliminates the need to identify a solvable unperturbed Hamiltonian. We numerically benchmark the method for interacting bosons, fermions, and quantum spins in different topologies.
  arXiv  Detail & Related papers  (2021-06-10T17:38:25Z)
• Continuous Variable Quantum Advantages and Applications in Quantum Optics [0.0]
  This thesis focuses on three main questions in the continuous variable and optical settings. Where does a quantum advantage, that is, the ability of quantum machines to outperform classical machines, come from? What advantages can be gained in practice from the use of quantum information?
  arXiv  Detail & Related papers  (2021-02-10T02:43:27Z)
• Quantum Deformed Neural Networks [83.71196337378022]
  We develop a new quantum neural network layer designed to run efficiently on a quantum computer. It can be simulated on a classical computer when restricted in the way it entangles input states.
  arXiv  Detail & Related papers  (2020-10-21T09:46:12Z)
• Quantum supremacy in driven quantum many-body systems [0.0]
  We show that quantum supremacy can be obtained in generic periodically-driven quantum many-body systems. Our proposal opens the way for a large class of quantum platforms to demonstrate and benchmark quantum supremacy.
  arXiv  Detail & Related papers  (2020-02-27T07:20:15Z)

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.