# Digital-Analog Quantum Simulations Using the Cross-Resonance Effect

@article{GonzalezRaya2021DigitalAnalogQS, title={Digital-Analog Quantum Simulations Using the Cross-Resonance Effect}, author={Tasio Gonzalez-Raya and Rodrigo Asensio-Perea and Ana Martin and Lucas Chibebe C'eleri and Mikel Sanz and Pavel Lougovski and Eugene F. Dumitrescu}, journal={PRX Quantum}, year={2021}, volume={2} }

Digital-analog quantum computation aims to reduce the currently infeasible resource requirements needed for near-term quantum information processing by replacing a series of two-qubit gates with a unitary transformation generated by the systems underlying Hamiltonian. Inspired by this paradigm, we consider superconducting architectures and extend the cross-resonance effect, up to first order in perturbation theory, from a pair of qubits to 1D chains and 2D square lattices. In an appropriate…

## 5 Citations

Floquet Engineering Heisenberg from Ising Using Constant Drive Fields for Quantum Simulation

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The time-evolution of an Ising model with large driving ﬁelds over discrete time intervals is shown to be reproduced by an effective XXZ-Heisenberg model at leading order in the inverse ﬁeld…

Fourier-based quantum signal processing

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An algorithm for Hermitian-operator function design from an oracle given by the unitary evolution with respect to that operator at a ﬁxed time is presented, which implements a Fourier approximation of the target function based on the iteration of a basic sequence of single-qubit gates, for which it is proved the expressibility.

Superconducting circuit architecture for digital-analog quantum computing

- Physics, Computer ScienceEPJ Quantum Technology
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A superconducting circuit architecture suitable for digital-analog quantum computing (DAQC) based on an enhanced NISQ family of nearest-neighbor interactions is proposed, making a smart use of digital steps and analog blocks to outperform digital quantum computing algorithms.

Quantum simulation and ground state preparation for the honeycomb Kitaev model

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- 2021

We propose a quantum protocol that allows preparing a ground state (GS) of the honeycomb Kitaev model. Our approach efficiently uses underlying symmetries and techniques from topological error…

Noise in Digital and Digital-Analog Quantum Computation

- Physics, Computer Science
- 2021

A careful comparison between digital and digital-analog paradigms under the presence of noise sources shows that, when the different noise channels usually present in superconducting quantum processors are considered, the fidelity of the QFT algorithm for thedigital-an analog paradigm outperforms the one obtained for the digital approach.

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