[HTML][HTML] Charging a quantum battery with linear feedback control

MT Mitchison, J Goold, J Prior - Quantum, 2021 - quantum-journal.org
Energy storage is a basic physical process with many applications. When considering this
task at the quantum scale, it becomes important to optimise the non-equilibrium dynamics of …

Monitoring fast superconducting qubit dynamics using a neural network

G Koolstra, N Stevenson, S Barzili, L Burns, K Siva… - Physical Review X, 2022 - APS
Weak measurements of a superconducting qubit produce noisy voltage signals that are
weakly correlated with the qubit state. To recover individual quantum trajectories from these …

Continuous measurement boosted adiabatic quantum thermal machines

B Bhandari, AN Jordan - Physical Review Research, 2022 - APS
We present a unified approach to study continuous measurement-based quantum thermal
machines in static as well as adiabatically driven systems. We investigate both steady-state …

Stabilizing two-qubit entanglement with dynamically decoupled active feedback

S Greenfield, L Martin, F Motzoi, KB Whaley… - Physical Review …, 2024 - APS
We propose and analyze a protocol for stabilizing a maximally entangled state of two
noninteracting qubits using active state-dependent feedback from a continuous two-qubit …

Pontryagin-optimal control of a non-Hermitian qubit

P Lewalle, KB Whaley - Physical Review A, 2023 - APS
Open-system quantum dynamics described by non-Hermitian effective Hamiltonians have
become a subject of considerable interest. Studies of non-Hermitian physics have revealed …

Continuous measurement of a qudit using dispersively coupled radiation

J Steinmetz, D Das, I Siddiqi, AN Jordan - Physical Review A, 2022 - APS
We analyze the continuous monitoring of a qudit coupled to a cavity using both phase-
preserving and phase-sensitive amplification. The quantum trajectories of the system are …

Measuring fluorescence to track a quantum emitter's state: a theory review

P Lewalle, SK Manikandan, C Elouard… - Contemporary …, 2020 - Taylor & Francis
We review the continuous monitoring of a qubit through its spontaneous emission, at an
introductory level. Contemporary experiments have been able to collect the fluorescence of …

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 …

Chaos in continuously monitored quantum systems: An optimal-path approach

P Lewalle, J Steinmetz, AN Jordan - Physical Review A, 2018 - APS
We predict that continuously monitored quantum dynamics can be chaotic. The optimal
paths between past and future boundary conditions can diverge exponentially in time when …

Multitime correlators in continuous measurement of qubit observables

J Atalaya, S Hacohen-Gourgy, LS Martin, I Siddiqi… - Physical Review A, 2018 - APS
We consider multitime correlators for output signals from linear detectors, continuously
measuring several qubit observables at the same time. Using the quantum Bayesian …