Engineering Fast High-Fidelity Quantum Operations With Constrained
Interactions
- URL: http://arxiv.org/abs/2003.12096v1
- Date: Thu, 26 Mar 2020 18:29:03 GMT
- Title: Engineering Fast High-Fidelity Quantum Operations With Constrained
Interactions
- Authors: Thales Figueiredo Roque, Aashish A. Clerk, Hugo Ribeiro
- Abstract summary: We present a very general method for designing high-efficiency control sequences.
Our approach reduces in the end to finding control fields by solving a set of time-independent linear equations.
We illustrate our method by applying it to a number of physically-relevant problems.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Understanding how to tailor quantum dynamics to achieve a desired evolution
is a crucial problem in almost all quantum technologies. We present a very
general method for designing high-efficiency control sequences that are always
fully compatible with experimental constraints on available interactions and
their tunability. Our approach reduces in the end to finding control fields by
solving a set of time-independent linear equations. We illustrate our method by
applying it to a number of physically-relevant problems: the strong-driving
limit of a two-level system, fast squeezing in a parametrically driven cavity,
the leakage problem in transmon qubit gates, and the acceleration of SNAP gates
in a qubit-cavity system.
Related papers
- Observation of disorder-free localization and efficient disorder averaging on a quantum processor [117.33878347943316]
We implement an efficient procedure on a quantum processor, leveraging quantum parallelism, to efficiently sample over all disorder realizations.
We observe localization without disorder in quantum many-body dynamics in one and two dimensions.
arXiv Detail & Related papers (2024-10-09T05:28:14Z) - Machine-learning-inspired quantum control in many-body dynamics [6.817811305553492]
We introduce a promising and versatile control neural network tailored to optimize control fields.
We address the problem of suppressing defect density and enhancing cat-state fidelity during the passage across the critical point in the quantum Ising model.
In comparison to gradient-based power-law quench methods, our approach demonstrates significant advantages for both small system sizes and long-term evolutions.
arXiv Detail & Related papers (2024-04-09T01:47:55Z) - On-demand transposition across light-matter interaction regimes in
bosonic cQED [69.65384453064829]
Bosonic cQED employs the light field of high-Q superconducting cavities coupled to non-linear circuit elements.
We present the first experiment to achieve fast switching of the interaction regime without deteriorating the cavity coherence.
Our work opens up a new paradigm to probe the full range of light-matter interaction dynamics within a single platform.
arXiv Detail & Related papers (2023-12-22T13:01:32Z) - Invariant-based control of quantum many-body systems across critical points [0.0]
We introduce a control technique based on dynamical invariants tailored to ensure adiabatic-like evolution within the lowest-energy subspace of many-body systems.
By tuning the controllable parameter according to analytical control results, we achieve high-fidelity evolutions operating close to the speed limit.
Remarkably, our approach leads to the breakdown of Kibble-Zurek scaling laws, offering tunable and significantly improved time scaling behavior.
arXiv Detail & Related papers (2023-09-11T14:09:37Z) - Quantum Gate Optimization for Rydberg Architectures in the Weak-Coupling
Limit [55.05109484230879]
We demonstrate machine learning assisted design of a two-qubit gate in a Rydberg tweezer system.
We generate optimal pulse sequences that implement a CNOT gate with high fidelity.
We show that local control of single qubit operations is sufficient for performing quantum computation on a large array of atoms.
arXiv Detail & Related papers (2023-06-14T18:24:51Z) - Multi-squeezed state generation and universal bosonic control via a
driven quantum Rabi model [68.8204255655161]
Universal control over a bosonic degree of freedom is key in the quest for quantum-based technologies.
Here we consider a single ancillary two-level system, interacting with the bosonic mode of interest via a driven quantum Rabi model.
We show that it is sufficient to induce the deterministic realization of a large class of Gaussian and non-Gaussian gates, which in turn provide universal bosonic control.
arXiv Detail & Related papers (2022-09-16T14:18:53Z) - Realization of arbitrary doubly-controlled quantum phase gates [62.997667081978825]
We introduce a high-fidelity gate set inspired by a proposal for near-term quantum advantage in optimization problems.
By orchestrating coherent, multi-level control over three transmon qutrits, we synthesize a family of deterministic, continuous-angle quantum phase gates acting in the natural three-qubit computational basis.
arXiv Detail & Related papers (2021-08-03T17:49:09Z) - Ultrafast Holonomic Quantum Gates [4.354697470999286]
We propose a nonadiabatic holonomic quantum scheme with detuned interactions on $Delta$-type three-level system.
Our numerical simulations show that the gate robustness is also stronger than previous schemes.
We present an implementation of our proposal on superconducting quantum circuits, with a decoherence-free subspace encoding.
arXiv Detail & Related papers (2021-08-03T14:31:38Z) - Dynamically corrected gates from geometric space curves [55.41644538483948]
We review a technique for designing control fields that dynamically correct errors while performing operations using a close relationship between quantum evolution and geometric space curves.
This approach provides access to the global solution space of control fields that accomplish a given task, facilitating the design of experimentally feasible gate operations for a wide variety of applications.
arXiv Detail & Related papers (2021-03-30T01:12:36Z) - Experimental implementation of precisely tailored light-matter
interaction via inverse engineering [5.131683740032632]
shortcuts to adiabaticity, originally proposed to speed up slow adiabatic process, have nowadays become versatile toolboxes.
Here, we implement fast and robust control for the state preparation and state engineering in a rare-earth ions system.
We demonstrate that our protocols surpass the conventional adiabatic schemes, by reducing the decoherence from the excited state decay and inhomogeneous broadening.
arXiv Detail & Related papers (2021-01-29T08:17:01Z) - Robust and Fast Holonomic Quantum Gates with Encoding on Superconducting
Circuits [4.354697470999286]
We propose a simplified implementation of universal holonomic quantum gates on superconducting circuits.
Our scheme is more robust than the conventional ones, and thus provides a promising alternative strategy for scalable fault-tolerant quantum computation.
arXiv Detail & Related papers (2020-04-23T13:26:18Z)
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.