Quantum computation of magnon spectra

Francis, Akhil; Freericks, J. K.; Kemper, A. F.

doi:10.1103/physrevb.101.014411

Cited by 60 publications

(41 citation statements)

References 16 publications

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“…Notwithstanding significant progress thanks to the development of sophisticated numerical methods [2][3][4][5][6][7] and groundbreaking experiments with cold-atom or trappedion platforms [8,9], simulations on universal quantum computers promise to yield major advancements in a multitude of research areas [10,11]. While a fault-tolerant quantum computer is still far into the future, noisy intermediate-scale quantum (NISQ) devices are available and their current capabilities have been demonstrated for various problems such as electronic structure calculations [12,13], simulations of spectral functions [14,15], measurement of entanglement [16,17], topological phase transitions [18], and out-of-equilibrium dynamics [19][20][21][22].…”

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confidence: 99%

Simulating Hydrodynamics on Noisy Intermediate-Scale Quantum Devices with Random Circuits

Richter

Pal

2021

Phys. Rev. Lett.

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In a recent milestone experiment, Google's processor Sycamore heralded the era of "quantum supremacy" by sampling from the output of (pseudo-)random circuits. We show that such random circuits provide tailor-made building blocks for simulating quantum many-body systems on noisy intermediate-scale quantum (NISQ) devices. Specifically, we propose an algorithm consisting of a random circuit followed by a trotterized Hamiltonian time evolution to study hydrodynamics and to extract transport coefficients in the linear response regime. We numerically demonstrate the algorithm by simulating the buildup of spatiotemporal correlation functions in one-and two-dimensional quantum spin systems, where we particularly scrutinize the inevitable impact of errors present in any realistic implementation. Importantly, we find that the hydrodynamic scaling of the correlations is highly robust with respect to the size of the Trotter step, which opens the door to reach nontrivial time scales with a small number of gates. While errors within the random circuit are shown to be irrelevant, we furthermore unveil that meaningful results can be obtained for noisy time evolutions with error rates achievable on near-term hardware. Our work emphasizes the practical relevance of random circuits on NISQ devices beyond the abstract sampling task.

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confidence: 99%

Simulating Hydrodynamics on Noisy Intermediate-Scale Quantum Devices with Random Circuits

Richter

Pal

2021

Phys. Rev. Lett.

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“…The current release is focused on the real-and imaginary-time evolution of the one-dimensional, time-dependent Heisenberg model, which, by constraining certain parameters, can represent various paradigmatic materials Hamiltonians including the TFIM, the (transverse) XY model, the XXZ chain, and more. This encapsulates most of the materials simulations that have been demonstrated on quantum hardware to date, including simulations of quantum criticality [17], scattering [25], non-equilibrium dynamics [8,19,32,49,66], and coninement and entanglement dynamics [60,61], mesonic masses [60], thermal properties [7,55], and magnon spectra [21].…”

Section: Discussionmentioning

confidence: 99%

ArQTiC: A Full-stack Software Package for Simulating Materials on Quantum Computers

Bassman

Powers

Jong

2022

ACM Transactions on Quantum Computing

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ArQTiC is an open-source, full-stack software package built for the simulations of materials on quantum computers. It currently can simulate materials that can be modeled by any Hamiltonian derived from a generic, one-dimensional, time-dependent Heisenberg Hamiltonain. ArQTiC includes modules for generating quantum programs for real- and imaginary-time evolution, quantum circuit optimization, connection to various quantum backends via the cloud, and post-processing of quantum results. By enabling users to seamlessly design, execute, and analyze materials simulations on quantum computers, ArQTiC opens this field to a broader community of scientists from a wider range of scientific domains.

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“…Recently, hybrid magnonics have attracted much attention as a new subfield of magnonics 65,67,[188][189][190] . The research on hybrid magnonics focuses on the coupling effects between magnons and other quantum systems such as microwave photons 67,191-hybrid phenomena show a new possibility to apply magnons for quantum information field 65,188,189,218 . However, most of the research on hybrid phenomena of magnons are based on uniform magnetic media.…”

Section: -2 Hybrid and Quantum Phenomena Of Magnonsmentioning

confidence: 99%

Hybrid quantum systems based on magnonics

Lachance-Quirion

Tabuchi

Gloppe

et al. 2019

Appl. Phys. Express

630

413

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Engineered quantum systems enabling novel capabilities for communication, computation, and sensing have blossomed in the last decade. Architectures benefiting from combining distinct and complementary physical quantum systems have emerged as promising platforms for developing quantum technologies. A new class of hybrid quantum systems based on collective spin excitations in ferromagnetic materials has led to the diverse set of experimental platforms which are outlined in this review article. The coherent interaction between microwave cavity modes and collective spin-wave modes is presented as the backbone of the development of more complex hybrid quantum systems. Indeed, quanta of excitation of the spin-wave modes, called magnons, can also interact coherently with optical photons, phonons, and superconducting qubits in the fields of cavity optomagnonics, cavity magnomechanics, and quantum magnonics, respectively. Notably, quantum magnonics provides a promising platform for performing quantum optics experiments in magnetically-ordered solid-state systems. Applications of hybrid quantum systems based on magnonics for quantum information processing and quantum sensing are also outlined briefly.

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Quantum computation of magnon spectra

Cited by 60 publications

References 16 publications

Simulating Hydrodynamics on Noisy Intermediate-Scale Quantum Devices with Random Circuits

Simulating Hydrodynamics on Noisy Intermediate-Scale Quantum Devices with Random Circuits

ArQTiC: A Full-stack Software Package for Simulating Materials on Quantum Computers

Hybrid quantum systems based on magnonics

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