Metrological characterization of non-gaussian entangled states of superconducting qubits

K Xu, YR Zhang, ZH Sun, H Li, P Song, Z Xiang… - Physical Review Letters, 2022 - APS
… estimation by using entangled states of superconducting qubits. Compared with the …
non-Gaussian entangled states. Our work will stimulate interest in non-Gaussian entangled states of …

Improving the entanglement transfer from continuous-variable systems to localized qubits using non-Gaussian states

F Casagrande, A Lulli, MGA Paris - … Review A—Atomic, Molecular, and Optical …, 2007 - APS
… as in cavity QED or with superconducting qubits, we analyze in … the two qubits, and discuss
conditions to preserve the entangleentangled state of radiation coupled to a pair of localized …

Non-Gaussian macroscopic entanglement of motion in a hybrid electromechanical device

N Es' haqi-Sani, M Khazaei Nezhad, M Abdi - Physical Review A, 2019 - APS
… with a mediating superconducting qubit. We show that the generated macroscopic entangled
states are non-Gaussian and their lifetime is limited by coherence time of the qubit. The …

Quantum non-Gaussian photon coincidences

L Lachman, R Filip - Physical Review Letters, 2021 - APS
… for quantum non-Gaussian two-photon coincidences that certify a new quality of photon
sources. The criteria reject states … We also analyze the robustness of the quantum non-Gaussian

Decoherence and tripartite entanglement dynamics in the presence of Gaussian and non-Gaussian classical noise

LT Kenfack, M Tchoffo, LC Fai, GC Fouokeng - Physica B: Condensed …, 2017 - Elsevier
… the nature and constitutes the main source of environmental decoherence in quantum
solid-state devices, superconducting qubits, and magnetic systems [51], [52], [53]. In this work, the …

Non-Gaussian Noise in Superconducting Circuits

TJ McCourt - 2023 - dspace.mit.edu
… The investigations in this work are centered around a particular superconducting qubit
architecture, the tunable-coupler Transmon. In this chapter, we will briefly overview the relevant …

Preserving entanglement and nonlocality in solid-state qubits by dynamical decoupling

R Lo Franco, A D'Arrigo, G Falci, G Compagno… - Physical Review B, 2014 - APS
entangled states of two superconducting qubits with purity ≈ 0.87 and fidelity to ideal Bell
states … In this regime, the non-Gaussian nature of the stochastic process is clearly visible in the …

Tripartite genuine non-Gaussian entanglement in three-mode spontaneous parametric down-conversion

A Agustí, CWS Chang, F Quijandría, G Johansson… - Physical Review Letters, 2020 - APS
… tripartite entanglement of a different nature to other paradigmatic threemode entangled states
… that the class of states recently generated in a superconducting-circuit implementation of …

Learning noise via dynamical decoupling of entangled qubits

T McCourt, C Neill, K Lee, C Quintana, Y Chen, J Kelly… - Physical Review A, 2023 - APS
… by the advancement of superconducting qubits. Transmon qubits that use frequency
tunable … Additionally, the clean signatures of non-Gaussian noise that we see are a significant …

Non-Gaussian entanglement swapping between three-mode spontaneous parametric down-conversion and three qubits

AA Casado, C Sabín - Physical Review A, 2022 - APS
… separate resonators, each containing a coupled superconducting qubit. We show that the …
The question remains whether this classical bound can be violated by some entangled state. …