Realization of superadiabatic two-qubit gates using parametric modulation in superconducting circuits

J Chu, D Li, X Yang, S Song, Z Han, Z Yang, Y Dong… - Physical Review …, 2020 - APS
… -qubit gates using parametric modulation on superconducting … We present details of the
parametric modulated Hamiltonian … can be realized with typical parametric modulation function …

Rapid and unconditional parametric reset protocol for tunable superconducting qubits

Y Zhou, Z Zhang, Z Yin, S Huai, X Gu, X Xu… - Nature …, 2021 - nature.com
parametric reset scheme for tunable superconducting qubits. By parametric modulation of the
qubit … The parametric modulation we propose consists of one or two frequency components …

AC flux sweet spots in parametrically modulated superconducting qubits

N Didier, EA Sete, J Combes, MP da Silva - Physical Review Applied, 2019 - APS
… We show that tunable superconducting qubits under parametric modulation have first-order …
These flux sweet spots occur at the extrema of the qubit average frequency under modulation

Perfect quantum state transfer in a superconducting qubit chain with parametrically tunable couplings

X Li, Y Ma, J Han, T Chen, Y Xu, W Cai, H Wang… - Physical Review …, 2018 - APS
… strength can be achieved by our parametrically modulating the qubits; that is, each Qj
with 1 ≤ j ≤ N − 1 is biased by an ac magnetic flux to periodically modulate its frequency as …

Assessing the influence of broadband instrumentation noise on parametrically modulated superconducting qubits

ES Fried, P Sivarajah, N Didier, EA Sete… - arXiv preprint arXiv …, 2019 - arxiv.org
… — two-qubit gates can be performed using AC signals to modulate a tunable transmon’s …
two-qubit gates. Specifically, we measure the qubit coherence time under flux modulation while …

Quantum coherent tunable coupling of superconducting qubits

AO Niskanen, K Harrabi, F Yoshihara, Y Nakamura… - Science, 2007 - science.org
… of optimally biased superconducting flux qubits. By modulating the nonlinear inductance
of an additional coupling element, we parametrically induced a two-qubit transition that was …

Analysis of a parametrically driven exchange-type gate and a two-photon excitation gate between superconducting qubits

M Roth, M Ganzhorn, N Moll, S Filipp, G Salis… - Physical Review A, 2017 - APS
… Here, we demonstrate significantly faster gate times when the bSWAP interaction is mediated
parametrically by a flux modulation of the tunable coupler using a similar device as in Ref. […

Josephson parametric phase-locked oscillator and its application to dispersive readout of superconducting qubits

ZR Lin, K Inomata, K Koshino, WD Oliver… - Nature …, 2014 - nature.com
… is periodically modulated. It can … modulated by binary phase-shift keying (BPSK). Moreover,
we apply this demodulation capability to the dispersive readout of a superconducting qubit. …

Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator

P Krantz, A Bengtsson, M Simoen, S Gustavsson… - Nature …, 2016 - nature.com
… for a superconducting qubit by dispersively coupling it with a Josephson parametric oscillator.
We employ a tunable quarter wavelength superconducting resonator and modulate its …

Parametrically activated entangling gates using transmon qubits

SA Caldwell, N Didier, CA Ryan, EA Sete, A Hudson… - Physical Review …, 2018 - APS
… computer with superconducting qubits is the execution of high-fidelity two-qubit gates within
… We propose and demonstrate parametric iSWAP and CZ gates activated by modulating the …