Related papers: Universal Gate Set for Continuous-Variable Quantum Computation with Microwave Circuits

Universal Gate Set for Continuous-Variable Quantum Computation with Microwave Circuits

URL: http://arxiv.org/abs/2002.01402v2
Date: Thu, 15 Oct 2020 09:45:11 GMT
Title: Universal Gate Set for Continuous-Variable Quantum Computation with Microwave Circuits
Authors: Timo Hillmann, Fernando Quijandr\'ia, G\"oran Johansson, Alessandro Ferraro, Simone Gasparinetti, Giulia Ferrini
Abstract summary: We provide an explicit construction of a universal gate set for continuous-variable quantum computation with microwave circuits. As an application, we show that this architecture allows for the generation of a cubic phase state with an experimentally feasible procedure.
Score: 101.18253437732933
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We provide an explicit construction of a universal gate set for continuous-variable quantum computation with microwave circuits. Such a universal set has been first proposed in quantum-optical setups, but its experimental implementation has remained elusive in that domain due to the difficulties in engineering strong nonlinearities. Here, we show that a realistic three-wave mixing microwave architecture based on the SNAIL [Frattini et al., Appl. Phys. Lett. 110, 222603 (2017)] allows us to overcome this difficulty. As an application, we show that this architecture allows for the generation of a cubic phase state with an experimentally feasible procedure. This work highlights a practical advantage of microwave circuits with respect to optical systems for the purpose of engineering non-Gaussian states, and opens the quest for continuous-variable algorithms based on few repetitions of elementary gates from the continuous-variable universal set.

Related papers

Universal Gate Set for Optical Lattice Based Atom Interferometry [0.0]
We show that there exists a universal set of atom optic components for inertial sensing. These components constitute gates with which we carry out quantum operations. We assert that such a gate set is metrologically universal, in analogy to universal gate sets for quantum computing.
arXiv Detail & Related papers (2024-10-22T23:09:03Z)
Universal quantum computation using atoms in cross-cavity systems [0.0]
We theoretically investigate a single-step implementation of both a universal two- (CNOT) and three-qubit (quantum Fredkin) gates in a cross-cavity setup. Within a high-cooper regime, the system exhibits an atomic-state-dependent $pi$-phase gate involving the two-mode single-photon bright and dark states.
arXiv Detail & Related papers (2023-08-28T20:09:54Z)
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)
Quantum Computing by Quantum Walk on Quantum Slide [9.087383504015682]
Continuous-time quantum walk is one of the alternative approaches to quantum computation. We show how quantum slide can be further applied to realize universal quantum computation.
arXiv Detail & Related papers (2022-11-16T04:19:13Z)
Plug-&-play generation of non-Gaussian states of light at a telecom wavelength [48.7576911714538]
This work marks an important progress towards practical quantum optical technologies in the continuous variable regime. Non-Gaussian state generation entirely relies on plug-&-play components from guided-wave optics technologies.
arXiv Detail & Related papers (2022-05-31T11:08:08Z)
Gaussian initializations help deep variational quantum circuits escape from the barren plateau [87.04438831673063]
Variational quantum circuits have been widely employed in quantum simulation and quantum machine learning in recent years. However, quantum circuits with random structures have poor trainability due to the exponentially vanishing gradient with respect to the circuit depth and the qubit number. This result leads to a general belief that deep quantum circuits will not be feasible for practical tasks.
arXiv Detail & Related papers (2022-03-17T15:06:40Z)
Circuit connectivity boosts by quantum-classical-quantum interfaces [0.4194295877935867]
High-connectivity circuits are a major roadblock for current quantum hardware. We propose a hybrid classical-quantum algorithm to simulate such circuits without swap-gate ladders. We numerically show the efficacy of our method for a Bell-state circuit for two increasingly distant qubits.
arXiv Detail & Related papers (2022-03-09T19:00:02Z)
Quantum simulation of $\phi^4$ theories in qudit systems [53.122045119395594]
We discuss the implementation of quantum algorithms for lattice $Phi4$ theory on circuit quantum electrodynamics (cQED) system. The main advantage of qudit systems is that its multi-level characteristic allows the field interaction to be implemented only with diagonal single-qudit gates.
arXiv Detail & Related papers (2021-08-30T16:30:33Z)
An engineer's brief introduction to microwave quantum optics and a single-port state-space representation [0.0]
We show some underpinnings of microwave quantum optics in terms of microwave engineering. This serves as a case study to highlight how microwave methodologies can be applied in open quantum systems.
arXiv Detail & Related papers (2020-11-13T02:53:16Z)
Simulating nonnative cubic interactions on noisy quantum machines [65.38483184536494]
We show that quantum processors can be programmed to efficiently simulate dynamics that are not native to the hardware. On noisy devices without error correction, we show that simulation results are significantly improved when the quantum program is compiled using modular gates.
arXiv Detail & Related papers (2020-04-15T05:16:24Z)

This list is automatically generated from the titles and abstracts of the papers in this site.