Simulating open quantum systems with giant atoms
- URL: http://arxiv.org/abs/2406.13678v1
- Date: Wed, 19 Jun 2024 16:31:42 GMT
- Title: Simulating open quantum systems with giant atoms
- Authors: Guangze Chen, Anton Frisk Kockum,
- Abstract summary: We introduce a simulator for open quantum many-body systems based on giant atoms, i.e., atoms (possibly artificial)
We first show that a simulator consisting of two giant atoms can simulate the dynamics of two coupled qubits.
We demonstrate and analyze the robustness of these simulation results against noise affecting the giant atoms.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Open quantum many-body systems are of both fundamental and applicational interest. However, it remains an open challenge to simulate and solve such systems, both with state-of-the-art classical methods and with quantum-simulation protocols. To overcome this challenge, we introduce a simulator for open quantum many-body systems based on giant atoms, i.e., atoms (possibly artificial), that couple to a waveguide at multiple points, which can be wavelengths apart. We first show that a simulator consisting of two giant atoms can simulate the dynamics of two coupled qubits, where one qubit is subject to different drive amplitudes and dissipation rates. This simulation enables characterizing the quantum Zeno crossover in this model. We further show that by equipping the simulator with post-selection, it becomes possible to simulate the effective non-Hermitian Hamiltonian dynamics of the system and thereby characterize the transition from oscillatory to non-oscillatory dynamics due to varying dissipation rates. We demonstrate and analyze the robustness of these simulation results against noise affecting the giant atoms. Finally, we discuss and show how giant-atom-based simulators can be scaled up for digital-analog simulation of large open quantum many-body systems, e.g., generic dissipative spin models.
Related papers
- Thermalization and Criticality on an Analog-Digital Quantum Simulator [133.58336306417294]
We present a quantum simulator comprising 69 superconducting qubits which supports both universal quantum gates and high-fidelity analog evolution.
We observe signatures of the classical Kosterlitz-Thouless phase transition, as well as strong deviations from Kibble-Zurek scaling predictions.
We digitally prepare the system in pairwise-entangled dimer states and image the transport of energy and vorticity during thermalization.
arXiv Detail & Related papers (2024-05-27T17:40:39Z) - Quantum Computing Simulation of a Mixed Spin-Boson Hamiltonian and Its Performance for a Cavity Quantum Electrodynamics Problem [0.0]
We present a methodology for simulating a phase transition in a pair of cavities that permit photon hopping.
We find that the simulation can be performed with a modest amount of quantum resources.
arXiv Detail & Related papers (2023-10-17T15:25:35Z) - Quantum emulation of the transient dynamics in the multistate
Landau-Zener model [50.591267188664666]
We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity.
Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
arXiv Detail & Related papers (2022-11-26T15:04:11Z) - Digital Quantum Simulation of the Spin-Boson Model under Open System
Dynamics [1.5727276506140881]
We study how to simulate open quantum dynamics in a digital quantum computer.
We show that the key aspect is to simulate the unitary portion of the dynamics, while the dissipative part can lead to a more noise-resistant simulation.
arXiv Detail & Related papers (2022-10-28T06:03:35Z) - Probing finite-temperature observables in quantum simulators of spin
systems with short-time dynamics [62.997667081978825]
We show how finite-temperature observables can be obtained with an algorithm motivated from the Jarzynski equality.
We show that a finite temperature phase transition in the long-range transverse field Ising model can be characterized in trapped ion quantum simulators.
arXiv Detail & Related papers (2022-06-03T18:00:02Z) - Quantum Markov Chain Monte Carlo with Digital Dissipative Dynamics on
Quantum Computers [52.77024349608834]
We develop a digital quantum algorithm that simulates interaction with an environment using a small number of ancilla qubits.
We evaluate the algorithm by simulating thermal states of the transverse Ising model.
arXiv Detail & Related papers (2021-03-04T18:21:00Z) - Quantum Simulation of the Bosonic Creutz Ladder with a Parametric Cavity [5.336258422653554]
We use a multimode superconducting parametric cavity as a hardware-efficient analog quantum simulator.
We realize a lattice in synthetic dimensions with complex hopping interactions.
The complex-valued hopping interaction further allows us to simulate, for instance, gauge potentials and topological models.
arXiv Detail & Related papers (2021-01-11T14:46:39Z) - Engineering analog quantum chemistry Hamiltonians using cold atoms in
optical lattices [69.50862982117127]
We benchmark the working conditions of the numerically analog simulator and find less demanding experimental setups.
We also provide a deeper understanding of the errors of the simulation appearing due to discretization and finite size effects.
arXiv Detail & Related papers (2020-11-28T11:23:06Z) - Reconfigurable Network for Quantum Transport Simulation [0.0]
We show the first simulation of the exciton dynamics in the B800 ring of the purple bacteria LH2 complex.
We implement the Su-Schrieffer-Heeger model to directly observe the emergence of topologically-protected one-dimensional edge states.
arXiv Detail & Related papers (2020-08-13T19:03:20Z) - Quantum Simulation of 2D Quantum Chemistry in Optical Lattices [59.89454513692418]
We propose an analog simulator for discrete 2D quantum chemistry models based on cold atoms in optical lattices.
We first analyze how to simulate simple models, like the discrete versions of H and H$+$, using a single fermionic atom.
We then show that a single bosonic atom can mediate an effective Coulomb repulsion between two fermions, leading to the analog of molecular Hydrogen in two dimensions.
arXiv Detail & Related papers (2020-02-21T16:00:36Z)
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.