Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe
Quantum optimal control, a toolbox for devising and implementing the shapes of external
fields that accomplish given tasks in the operation of a quantum device in the best way …
fields that accomplish given tasks in the operation of a quantum device in the best way …
Shortcuts to adiabaticity: Concepts, methods, and applications
Shortcuts to adiabaticity (STA) are fast routes to the final results of slow, adiabatic changes
of the controlling parameters of a system. The shortcuts are designed by a set of analytical …
of the controlling parameters of a system. The shortcuts are designed by a set of analytical …
Time-dependent Markovian quantum master equation
We construct a quantum Markovian master equation for a driven system coupled to a
thermal bath. The derivation utilizes an explicit solution of the propagator of the driven …
thermal bath. The derivation utilizes an explicit solution of the propagator of the driven …
Unitary quantum perceptron as efficient universal approximator (a)
E Torrontegui, JJ García-Ripoll - Europhysics Letters, 2019 - iopscience.iop.org
We demonstrate that it is possible to implement a quantum perceptron with a sigmoid
activation function as an efficient, reversible many-body unitary operation. When inserted in …
activation function as an efficient, reversible many-body unitary operation. When inserted in …
Simulating Markovian open quantum systems using higher-order series expansion
We present an efficient quantum algorithm for simulating the dynamics of Markovian open
quantum systems. The performance of our algorithm is similar to the previous state-of-the-art …
quantum systems. The performance of our algorithm is similar to the previous state-of-the-art …
Focus on shortcuts to adiabaticity
A Del Campo, K Kim - New Journal of Physics, 2019 - iopscience.iop.org
Shortcuts to Adiabaticity (STA) constitute driving schemes that provide an alternative to
adiabatic protocols to control and guide the dynamics of classical and quantum systems …
adiabatic protocols to control and guide the dynamics of classical and quantum systems …
Shortcuts to adiabaticity in driven open quantum systems: Balanced gain and loss and non-Markovian evolution
A universal scheme is introduced to speed up the dynamics of a driven open quantum
system along a prescribed trajectory of interest. This framework generalizes counterdiabatic …
system along a prescribed trajectory of interest. This framework generalizes counterdiabatic …
Robust single-qubit gates by composite pulses in three-level systems
ZC Shi, HN Wu, LT Shen, J Song, Y **a, XX Yi… - Physical Review A, 2021 - APS
Composite pulses are an efficient tool for robust quantum control. In this work, we derive the
form of the composite pulse sequence to implement robust single-qubit gates in a three-level …
form of the composite pulse sequence to implement robust single-qubit gates in a three-level …
[HTML][HTML] Quantum control based on machine learning in an open quantum system
Designing robust control schemes in n-level open quantum system is significant for quantum
computation. Here, we investigate two quantum control strategies based on supervised …
computation. Here, we investigate two quantum control strategies based on supervised …
Exact classical noise master equations: Applications and connections
A Kiely - Europhysics Letters, 2021 - iopscience.iop.org
All quantum systems are subject to noise and imperfections due to stray fields,
inhomogeneities or drifting experimental controls. An understanding of the effects of noise …
inhomogeneities or drifting experimental controls. An understanding of the effects of noise …