Energy-participation quantization of Josephson circuits

ZK Minev, Z Leghtas, SO Mundhada… - npj Quantum …, 2021 - nature.com
Superconducting microwave circuits incorporating nonlinear devices, such as Josephson
junctions, are a leading platform for emerging quantum technologies. Increasing circuit …

Fast high-fidelity quantum nondemolition qubit readout via a nonperturbative cross-Kerr coupling

R Dassonneville, T Ramos, V Milchakov, L Planat… - Physical Review X, 2020 - APS
Qubit readout is an indispensable element of any quantum information processor. In this
work, we experimentally demonstrate a nonperturbative cross-Kerr couplingbetween a …

Topologically protected quantum coherence in a superatom

W Nie, ZH Peng, F Nori, Y Liu - Physical Review Letters, 2020 - APS
Exploring the properties and applications of topological quantum states is essential to better
understand topological matter. Here, we theoretically study a quasi-one-dimensional …

Implementation of pairwise longitudinal coupling in a three-qubit superconducting circuit

T Roy, S Kundu, M Chand, S Hazra, N Nehra… - Physical Review …, 2017 - APS
We present the “trimon,” a multimode superconducting circuit implementing three qubits with
all-to-all longitudinal coupling. This always-on interaction enables simple implementation of …

Transmon-qubit readout using an in situ bifurcation amplification in the mesoscopic regime

R Dassonneville, T Ramos, V Milchakov, C Mori… - Physical Review …, 2023 - APS
We demonstrate a transmon-qubit readout based on the nonlinear response to a drive of
polaritonic meters in situ coupled to the qubit. Inside a three-dimensional readout cavity, we …

Floquet quantum simulation with superconducting qubits

O Kyriienko, AS Sørensen - Physical Review Applied, 2018 - APS
We propose a quantum algorithm for simulating spin models based on the periodic
modulation of transmon qubits. Using the Floquet theory, we derive an effective time …

Full two-photon down-conversion of a single photon

E Sánchez-Burillo, L Martín-Moreno, JJ García-Ripoll… - Physical Review A, 2016 - APS
We demonstrate, both numerically and analytically, that it is possible to deterministically
generate two photons from one and only one photon. We characterize the output two-photon …

Robust shaped pulses for arrays of superconducting or semiconductor spin qubits with fixed Ising coupling

DW Kanaar, JP Kestner - Physical Review A, 2024 - APS
A major current challenge in solid-state quantum computing is to scale qubit arrays to a
larger number of qubits. This is hampered by the complexity of the control wiring for the large …

Mixing of coherent waves in a single three-level artificial atom

T Hönigl-Decrinis, IV Antonov, R Shaikhaidarov… - Physical Review A, 2018 - APS
We report coherent frequency conversion in the gigahertz range via three-wave mixing in a
single artificial atom in open space. All frequencies involved are in the vicinity of transition …

On catching and reversing a quantum jump mid-flight

ZK Minev, SO Mundhada, S Shankar… - … on Coherence and …, 2019 - opg.optica.org
On catching and reversing a quantum jump mid-flight Page 1 Tu5B.1.pdf Rochester Conference
on Coherence and Quantum Optics © OSA 2019 On catching and reversing a quantum jump …