Entanglement and Coherence Dynamics in Photonic Quantum Memristors

• URL: http://arxiv.org/abs/2409.08979v3
• Date: Tue, 24 Dec 2024 09:14:07 GMT
• Title: Entanglement and Coherence Dynamics in Photonic Quantum Memristors
• Authors: Alberto Ferrara, Rosario Lo Franco,
• Abstract summary: We show that a photonic quantum memristor (PQM) displays memristive dynamics on its quantum coherence.<n>We build and run a circuit-model of the PQM on a real qubit-based quantum computer (IBM-Q)
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Memristive systems exhibit dynamics that depend on their past states, making them useful as memory units. Recently, quantum memristor models have been proposed and notably, a photonic quantum memristor (PQM) has been experimentally proven. In this work, we explore and characterize various quantum properties that emerge from this specific model of PQM. Firstly, we find that a single PQM displays memristive dynamics on its quantum coherence. Secondly, we analytically show that a network made of two independent PQMs can manifest memory effects on the dynamics of both entanglement and coherence of correlated photons traveling through the network, regardless of their distance, in the hypothesis of negligible external disturbances. Additionally, we build and run a circuit-model of the PQM on a real qubit-based quantum computer (IBM-Q), showing that: (i) this system can effectively be used for non-linear quantum computing under specific conditions, and (ii) digital quantum simulations can reproduce the dynamics of a memristive quantum system in a non-Markovian regime.

Related papers

• Observation of photonic dynamics in dissipative quantum Rabi models [5.792293600651519]
  An open quantum Rabi model (QRM) with a strong photonic dissipation has not been experimentally explored.<n>We present the first experimental demonstration of such an open system in circuit QED.<n>The results demonstrate that the system's behavior is significantly modified by photonic dissipation.
  arXiv  Detail & Related papers  (2025-06-19T06:40:16Z)
• Variational Quantum Simulation of the Interacting Schwinger Model on a Trapped-Ion Quantum Processor [26.47874938214435]
  In this work, we explore the multi-flavor lattice Schwinger model - a toy model inspired by quantum chromodynamics. We employ a parametric quantum circuit executed on our quantum processor to identify ground states in different parameter regimes of the model. The resulting states are analyzed via quantum state tomography, to reveal how characteristic properties such as correlations in the output state change.
  arXiv  Detail & Related papers  (2025-04-29T14:43:57Z)
• Quantum memristor with vacuum--one-photon qubits [0.0]
  An optical quantum memristor can be realized with a vacuum--one-photon qubit entering a tunable beam splitter. We show that the coherence of the input state is preserved by the quantum memristor.
  arXiv  Detail & Related papers  (2025-03-04T10:22:03Z)
• Simulation of open quantum systems on universal quantum computers [15.876768787615179]
  We present an innovative and scalable method to simulate open quantum systems using quantum computers. We define an adjoint density matrix as a counterpart of the true density matrix, which reduces to a mixed-unitary quantum channel. accurate long-time simulation can also be achieved as the adjoint density matrix and the true dissipated one converges to the same state.
  arXiv  Detail & Related papers  (2024-05-31T09:07:27Z)
• 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)
• Measurement-based infused circuits for variational quantum eigensolvers [1.732837834702512]
  Variational quantum eigensolvers (VQEs) are successful algorithms for studying physical systems on quantum computers. In this work, we incorporate such ideas into traditional VQE circuits. We showcase our approach on real superconducting quantum computers by performing VQE simulations of testbed systems.
  arXiv  Detail & Related papers  (2023-05-30T16:45:54Z)
• Universality of critical dynamics with finite entanglement [68.8204255655161]
  We study how low-energy dynamics of quantum systems near criticality are modified by finite entanglement. Our result establishes the precise role played by entanglement in time-dependent critical phenomena.
  arXiv  Detail & Related papers  (2023-01-23T19:23:54Z)
• Simulation of Entanglement Generation between Absorptive Quantum Memories [56.24769206561207]
  We use the open-source Simulator of QUantum Network Communication (SeQUeNCe), developed by our team, to simulate entanglement generation between two atomic frequency comb (AFC) absorptive quantum memories. We realize the representation of photonic quantum states within truncated Fock spaces in SeQUeNCe. We observe varying fidelity with SPDC source mean photon number, and varying entanglement generation rate with both mean photon number and memory mode number.
  arXiv  Detail & Related papers  (2022-12-17T05:51:17Z)
• Revealing microcanonical phase diagrams of strongly correlated systems via time-averaged classical shadows [0.0]
  We propose a method to study microcanonical phases and phase transitions on a quantum computer from quantum dynamics. We first show that this method, applied to ground state calculations on 100 qubit systems, discovers the geometric relationship between magnetization and field. We then show that diffusion maps of TACS data from quantum dynamics simulations efficiently learn the phase-defining features and correctly identify the quantum critical region.
  arXiv  Detail & Related papers  (2022-11-02T16:39:52Z)
• Implementation of a two-stroke quantum heat engine with a collisional model [50.591267188664666]
  We put forth a quantum simulation of a stroboscopic two-stroke thermal engine in the IBMQ processor. The system consists of a quantum spin chain connected to two baths at their boundaries, prepared at different temperatures using the variational quantum thermalizer algorithm.
  arXiv  Detail & Related papers  (2022-03-25T16:55:08Z)
• Recompilation-enhanced simulation of electron-phonon dynamics on IBM Quantum computers [62.997667081978825]
  We consider the absolute resource cost for gate-based quantum simulation of small electron-phonon systems. We perform experiments on IBM quantum hardware for both weak and strong electron-phonon coupling. Despite significant device noise, through the use of approximate circuit recompilation we obtain electron-phonon dynamics on current quantum computers comparable to exact diagonalisation.
  arXiv  Detail & Related papers  (2022-02-16T19:00:00Z)
• Strategies to simulate dephasing-assisted quantum transport on digital quantum computers [0.0]
  Environment-Assisted Quantum Transport (ENAQT) consists in the modulation and sometimes enhancement of the transfer efficiency by the interaction with an environment. We consider the problem of simulating the dynamics underlying ENAQT in a digital quantum computer. Two different quantum algorithms are introduced, the first one based on Hamiltonians and the second one based on a collision scheme.
  arXiv  Detail & Related papers  (2021-11-04T14:23:08Z)
• From geometry to coherent dissipative dynamics in quantum mechanics [68.8204255655161]
  We work out the case of finite-level systems, for which it is shown by means of the corresponding contact master equation. We describe quantum decays in a 2-level system as coherent and continuous processes.
  arXiv  Detail & Related papers  (2021-07-29T18:27:38Z)
• Information Scrambling in Computationally Complex Quantum Circuits [56.22772134614514]
  We experimentally investigate the dynamics of quantum scrambling on a 53-qubit quantum processor. We show that while operator spreading is captured by an efficient classical model, operator entanglement requires exponentially scaled computational resources to simulate.
  arXiv  Detail & Related papers  (2021-01-21T22:18:49Z)
• Entanglement transfer, accumulation and retrieval via quantum-walk-based qubit-qudit dynamics [50.591267188664666]
  Generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies. We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based it transfer & accumulate mechanism. In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
  arXiv  Detail & Related papers  (2020-10-14T14:33:34Z)
• 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)
• Simulation of single photon dynamics in coupled cavities through IBM quantum computer [0.0]
  We design a quantum circuit in IBM quantum computer that mimics the dynamics of single photon in a coupled cavity system. By choosing the gate parameters in the quantum circuit, we could transfer an unknown qubit state between the qubits.
  arXiv  Detail & Related papers  (2020-03-22T14:35:03Z)
• Experimental Observation of Equilibrium and Dynamical Quantum Phase Transitions via Out-of-Time-Ordered Correlators [14.389514788367086]
  We report the first experimental observation of EQPTs and DQPTs in a quantum spin chain via quench dynamics of OTOC on a nuclear magnetic resonance quantum simulator. We demonstrate that the long-time average value of the OTOC in quantum quench signals the equilibrium quantum critical point and ordered quantum phases.
  arXiv  Detail & Related papers  (2019-12-27T09:35:07Z)

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.