Boson sampling with ultracold atoms in a programmable optical lattice

• URL: http://arxiv.org/abs/2208.12253v2
• Date: Tue, 6 Aug 2024 14:01:55 GMT
• Title: Boson sampling with ultracold atoms in a programmable optical lattice
• Authors: Carsten Robens, Iñigo Arrazola, Wolfgang Alt, Dieter Meschede, Lucas Lamata, Enrique Solano, Andrea Alberti,
• Abstract summary: We propose a scheme to implement a boson sampling machine with ultracold atoms in a polarization-synthesized optical lattice. We experimentally demonstrate the basic building block of such a machine by revealing the Hong-Ou-Mandel interference of two bosonic atoms in a four-mode interferometer. Our results show that atomic samplers have the potential to achieve quantum advantage over today's best supercomputers with $N gtrsim 40$.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Sampling from a quantum distribution can be exponentially hard for classical computers and yet could be performed efficiently by a noisy intermediate-scale quantum device. A prime example of a distribution that is hard to sample is given by the output states of a linear interferometer traversed by $N$ identical boson particles. Here, we propose a scheme to implement such a boson sampling machine with ultracold atoms in a polarization-synthesized optical lattice. We experimentally demonstrate the basic building block of such a machine by revealing the Hong-Ou-Mandel interference of two bosonic atoms in a four-mode interferometer. To estimate the sampling rate for large $N$, we develop a theoretical model based on a master equation that accounts for particle losses, but not include technical errors. Our results show that atomic samplers have the potential to achieve quantum advantage over today's best supercomputers with $N \gtrsim 40$.

Related papers

• Hybrid boson sampling [0.0]
  We propose boson sampling from a system of coupled photons and Bose-Einstein condensed atoms placed inside a multi-mode cavity. We find a joint probability distribution of atom and photon numbers within a quasi-equilibrium model. Merging cavity-QED and quantum-gas technologies into hybrid boson sampling setup has the potential to overcome limitations of separate, photon or atom, sampling schemes.
  arXiv  Detail & Related papers  (2024-09-13T16:43:35Z)
• Hybrid Oscillator-Qubit Quantum Processors: Simulating Fermions, Bosons, and Gauge Fields [31.51988323782987]
  We develop a hybrid oscillator-qubit processor framework for quantum simulation of strongly correlated fermions and bosons. This framework gives exact decompositions of particle interactions as well as approximate methods based on the Baker-Campbell Hausdorff formulas. While our work focusses on an implementation in superconducting hardware, our framework can also be used in trapped ion, and neutral atom hardware.
  arXiv  Detail & Related papers  (2024-09-05T17:58:20Z)
• An atomic boson sampler [0.0]
  A boson sampler implements a restricted model of quantum computing. We show a new combination of tools for implementing boson sampling using ultracold atoms in a tunnel-coupled optical lattice. Our work demonstrates the core capabilities required to directly assemble ground and excited states in simulations of various Hubbard models.
  arXiv  Detail & Related papers  (2023-07-13T17:56:05Z)
• Testing of on-cloud Gaussian Boson Sampler "Borealis'' via graph theory [0.0]
  photonic-based sampling machines solving the Gaussian Boson Sampling problem play a central role in the experimental demonstration of a quantum computational advantage. In this work, we test the performances of the recently developed photonic machine Borealis as a sampling machine and its possible use cases in graph theory.
  arXiv  Detail & Related papers  (2023-06-21T09:02:55Z)
• Importance sampling for stochastic quantum simulations [68.8204255655161]
  We introduce the qDrift protocol, which builds random product formulas by sampling from the Hamiltonian according to the coefficients. We show that the simulation cost can be reduced while achieving the same accuracy, by considering the individual simulation cost during the sampling stage. Results are confirmed by numerical simulations performed on a lattice nuclear effective field theory.
  arXiv  Detail & Related papers  (2022-12-12T15:06:32Z)
• 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)
• Bosonic field digitization for quantum computers [62.997667081978825]
  We address the representation of lattice bosonic fields in a discretized field amplitude basis. We develop methods to predict error scaling and present efficient qubit implementation strategies.
  arXiv  Detail & Related papers  (2021-08-24T15:30:04Z)
• Cracking the Quantum Advantage threshold for Gaussian Boson Sampling [0.0]
  We propose the approximate algorithm to obtain the probability of any specific measurement outcome. For a 70-mode device on a laptop, our approximation achieves accuracy competitive with the experimental one.
  arXiv  Detail & Related papers  (2021-06-02T20:05:46Z)
• 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)
• Preparation of excited states for nuclear dynamics on a quantum computer [117.44028458220427]
  We study two different methods to prepare excited states on a quantum computer. We benchmark these techniques on emulated and real quantum devices. These findings show that quantum techniques designed to achieve good scaling on fault tolerant devices might also provide practical benefits on devices with limited connectivity and gate fidelity.
  arXiv  Detail & Related papers  (2020-09-28T17:21:25Z)
• 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.