Quantum control of bosonic modes with superconducting circuits

WL Ma, S Puri, RJ Schoelkopf, MH Devoret, SM Girvin… - Science Bulletin, 2021 - Elsevier
Bosonic modes have wide applications in various quantum technologies, such as optical
photons for quantum communication, magnons in spin ensembles for quantum information …

A review on quantum information processing in cavities

N Meher, S Sivakumar - The European Physical Journal Plus, 2022 - Springer
The processing of information and computation is undergoing a paradigmatic shift since the
realization of the enormous potential of quantum features to perform these tasks. Coupled …

Fast universal control of an oscillator with weak dispersive coupling to a qubit

A Eickbusch, V Sivak, AZ Ding, SS Elder, SR Jha… - Nature Physics, 2022 - nature.com
Full manipulation of a quantum system requires controlled evolution generated by nonlinear
interactions, which is coherent when the rate of nonlinearity is large compared with the rate …

Exponential suppression of bit-flips in a qubit encoded in an oscillator

R Lescanne, M Villiers, T Peronnin, A Sarlette… - Nature Physics, 2020 - nature.com
A quantum system interacts with its environment—if ever so slightly—no matter how much
care is put into isolating it. Therefore, quantum bits undergo errors, putting dauntingly difficult …

Towards scalable bosonic quantum error correction

BM Terhal, J Conrad, C Vuillot - Quantum Science and …, 2020 - iopscience.iop.org
We review some of the recent efforts in devising and engineering bosonic qubits for
superconducting devices, with emphasis on the Gottesman–Kitaev–Preskill (GKP) qubit. We …

Practical guide for building superconducting quantum devices

YY Gao, MA Rol, S Touzard, C Wang - PRX Quantum, 2021 - APS
Quantum computing offers a powerful new paradigm of information processing that has the
potential to transform a wide range of industries. In the pursuit of the tantalizing promises of …

Nonadiabatic geometric quantum computation with cat-state qubits via invariant-based reverse engineering

YH Kang, YH Chen, X Wang, J Song, Y Xia… - Physical Review …, 2022 - APS
We propose a protocol to realize nonadiabatic geometric quantum computation of small-
amplitude Schrödinger cat qubits via invariant-based reverse engineering. We consider a …

Generating long-lived macroscopically distinct superposition states in atomic ensembles

W Qin, A Miranowicz, H Jing, F Nori - Physical Review Letters, 2021 - APS
We propose to create and stabilize long-lived macroscopic quantum superposition states in
atomic ensembles. We show that using a fully quantum parametric amplifier can cause the …

Beating the 3 db limit for intracavity squeezing and its application to nondemolition qubit readout

W Qin, A Miranowicz, F Nori - Physical Review Letters, 2022 - APS
While the squeezing of a propagating field can, in principle, be made arbitrarily strong, the
cavity-field squeezing is subject to the well-known 3 dB limit, and thus has limited …

Symmetries and conserved quantities of boundary time crystals in generalized spin models

G Piccitto, M Wauters, F Nori, N Shammah - Physical Review B, 2021 - APS
We investigate how symmetries and conserved quantities relate to the occurrence of the
boundary time crystal (BTC) phase in a generalized spin model with Lindblad dissipation …