4.8 Article

Quantum simulation of conical intersections using trapped ions

Related references

Note: Only part of the references are listed.
Article Physics, Multidisciplinary

Programmable Quantum Simulations of Bosonic Systems with Trapped Ions

Or Katz et al.

Summary: Trapped atomic ion crystals serve as a leading platform in quantum simulations of spin systems, where programmable and long-range spin-spin interactions are achieved through excitations of phonons. In this study, we propose a complementary approach using phonons in trapped-ion crystals to simulate bosonic systems, mediated by excitations of trapped-ion spins. This scheme allows for high programmability across a dense graph of bosonic couplings, utilizing long-lived collective phonon modes in a trapped-ion chain. It is well-suited for tackling challenging problems such as boson sampling and simulations of long-range bosonic and spin-boson Hamiltonians.

PHYSICAL REVIEW LETTERS (2023)

Article Chemistry, Physical

Analytical Energy Gradient for State-Averaged Orbital-Optimized Variational Quantum Eigensolvers and Its Application to a Photochemical Reaction

Keita Omiya et al.

Summary: Understanding photochemical reactions is crucial for various biochemical phenomena and the development of functional materials. Utilizing quantum computers to analyze these reactions is a promising approach to overcome the computational challenges. By extending theories and evaluating analytical gradients, quantum computers show potential in studying photochemical reactions and capturing important characteristics such as conical intersections.

JOURNAL OF CHEMICAL THEORY AND COMPUTATION (2022)

Article Physics, Multidisciplinary

Determination of Multimode Motional Quantum States in a Trapped Ion System

Zhubing Jia et al.

Summary: The study proposes a general method to determine Fock state distributions and reconstruct the density matrix of arbitrary multimode motional states, applicable to any system with Jaynes-Cummings-type interactions.

PHYSICAL REVIEW LETTERS (2022)

Article Multidisciplinary Sciences

Direct geometric probe of singularities in band structure

Charles D. Brown et al.

Summary: This study directly measured the non-Abelian transformation produced by transport through singularities in ultracold atoms in an optical lattice. By measuring the acceleration process along a quasi-momentum trajectory, the topological winding numbers of the singularities were identified, providing a new method for studying non-Dirac singularities in ultracold-atom quantum simulators.

SCIENCE (2022)

Article Quantum Science & Technology

Digital Quantum Simulation of the Schwinger Model and Symmetry Protection with Trapped Ions

Nhung H. Nguyen et al.

Summary: Tracking the dynamics of physical systems in real time is a prime application of quantum computers. In this study, we use a trapped-ion system with up to six qubits to simulate the real-time dynamics of a lattice gauge theory. We demonstrate nonperturbative effects and investigate the gate requirement and error trade-offs. To mitigate experimental errors, we apply a symmetry-protection protocol and a symmetry-inspired postselection scheme. This work showcases the importance of an integrated theoretical, algorithmic, and experimental approach for efficient simulation of complex physical systems.

PRX QUANTUM (2022)

Review Physics, Multidisciplinary

Programmable quantum simulations of spin systems with trapped ions

C. Monroe et al.

Summary: Laser-cooled and trapped atomic ions provide an ideal platform for simulating interacting quantum spin models. By using optical fields to modulate the ions' Coulomb interaction, long-range and tunable spin-spin interactions can be produced. This quantum simulator allows for the study of complex equilibrium states and dynamical processes in many-body interacting quantum systems.

REVIEWS OF MODERN PHYSICS (2021)

Article Physics, Multidisciplinary

Exploring the Many-Body Dynamics Near a Conical Intersection with Trapped Rydberg Ions

Filippo M. Gambetta et al.

Summary: Conical intersections between electronic potential energy surfaces are crucial for studying nonadiabatic processes in the excited states of large molecules. By utilizing trapped Rydberg ions, these conical intersections can be engineered and their dynamics simulated on larger length and timescales, providing a highly controllable system. The presence of a conical intersection affects both nuclear and electronic dynamics, resulting in the inhibition of nuclear motion, and these effects can be monitored in real time through spectroscopic measurements.

PHYSICAL REVIEW LETTERS (2021)

Article Physics, Multidisciplinary

Calculating nonadiabatic couplings and Berry's phase by variational quantum eigensolvers

Shiro Tamiya et al.

Summary: VQE is utilized to find eigenenergies and eigenstates of systems in quantum chemistry and quantum many-body physics. The proposed extension of VQE aims to calculate the nonadiabatic couplings of molecules in quantum chemical systems and Berry's phase in quantum many-body systems.

PHYSICAL REVIEW RESEARCH (2021)

Article Chemistry, Multidisciplinary

Analog quantum simulation of chemical dynamics

Ryan J. MacDonell et al.

Summary: The research demonstrates that analog quantum simulators can efficiently simulate molecular dynamics, offering significant resource savings and improved time resolution. The approach can be implemented with current technology and shows promise in solving chemically intractable dynamics simulations in the near term.

CHEMICAL SCIENCE (2021)

Review Physics, Multidisciplinary

Quantum computational chemistry

Sam McArdle et al.

REVIEWS OF MODERN PHYSICS (2020)

Article Quantum Science & Technology

Ground-state energy estimation of the water molecule on a trapped-ion quantum computer

Yunseong Nam et al.

NPJ QUANTUM INFORMATION (2020)

Article Physics, Multidisciplinary

Direct Characteristic-Function Tomography of Quantum States of the Trapped-Ion Motional Oscillator

C. Fluhmann et al.

PHYSICAL REVIEW LETTERS (2020)

Review Optics

Rydberg aggregates

S. Wuester et al.

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS (2018)

Article Physics, Multidisciplinary

A trapped-ion simulator for spin-boson models with structured environments

A. Lemmer et al.

NEW JOURNAL OF PHYSICS (2018)

Article Physics, Multidisciplinary

Robust 2-Qubit Gates in a Linear Ion Crystal Using a Frequency-Modulated Driving Force

Pak Hong Leung et al.

PHYSICAL REVIEW LETTERS (2018)

Article Chemistry, Physical

Probing the Interstate Coupling near a Conical Intersection by Optical Spectroscopy

Marwa H. Farag et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2016)

Review Chemistry, Physical

New perspectives for Rashba spin-orbit coupling

A. Manchon et al.

NATURE MATERIALS (2015)

Article Physics, Multidisciplinary

Quantum simulation

I. M. Georgescu et al.

REVIEWS OF MODERN PHYSICS (2014)

Article Computer Science, Interdisciplinary Applications

QuTiP: An open-source Python framework for the dynamics of open quantum systems

J. R. Johansson et al.

COMPUTER PHYSICS COMMUNICATIONS (2012)

Article Chemistry, Physical

The Bravyi-Kitaev transformation for quantum computation of electronic structure

Jacob T. Seeley et al.

JOURNAL OF CHEMICAL PHYSICS (2012)

Review Physics, Multidisciplinary

Quantum simulations with trapped ions

R. Blatt et al.

NATURE PHYSICS (2012)

Article Physics, Multidisciplinary

Quantum Simulation of the Cooperative Jahn-Teller Transition in 1D Ion Crystals

Diego Porras et al.

PHYSICAL REVIEW LETTERS (2012)

Article Multidisciplinary Sciences

Spin-orbit-coupled Bose-Einstein condensates

Y. -J. Lin et al.

NATURE (2011)

Article Physics, Multidisciplinary

Conical Intersections in an Ultracold Gas

S. Wuester et al.

PHYSICAL REVIEW LETTERS (2011)

Article Multidisciplinary Sciences

Quantum simulation of the Dirac equation

R. Gerritsma et al.

NATURE (2010)

Article Physics, Multidisciplinary

Entanglement of Atomic Qubits Using an Optical Frequency Comb

D. Hayes et al.

PHYSICAL REVIEW LETTERS (2010)

Article Physics, Multidisciplinary

Ion trap quantum gates with amplitude-modulated laser beams

Christian F. Roos

NEW JOURNAL OF PHYSICS (2008)

Article Multidisciplinary Sciences

Polynomial-time quantum algorithm for the simulation of chemical dynamics

Ivan Kassal et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2008)

Article Optics

Manipulation and detection of a trapped Yb+ hyperfine qubit

S. Olmschenk et al.

PHYSICAL REVIEW A (2007)

Article Physics, Multidisciplinary

Generalized Jordan-Wigner transformations

CD Batista et al.

PHYSICAL REVIEW LETTERS (2001)