24 papers · ranked by Valyu relevance
Steffen J. Glaser, Ugo Boscain, Tommaso Calarco, Christiane P. Koch + 8 more
'Walter Köckenberger' 'Ronnie Kosloff' 'Ilya Kuprov' 'Burkhard Luy' 'S. G. Schirmer' 'Thomas Schulte‐Herbrüggen' 'Dominique Sugny' 'Frank K. Wilhelm'] - 1 Department Chemie, TU-M¨unchen (TUM), Lichtenbergstrasse 4, 85747 Garching, Germany - 2 CNRS, CMAP Ecole Polytechnique, Palaiseau, France and Team GECO, INRIA Saclay…
Christiane P. Koch
Quantum control refers to our ability to manipulate quantum systems. This tutorial-style chapter focuses on the use of classical electromagnetic fields to steer the system dynamics. In this approach, the quantum nature of the control stems solely from the underlying dynamics, through the exploitation of destructive and…
Daniel M. Reich, Nadav Katz, Christiane P. Koch
Quantum technology, exploiting entanglement and the wave nature of matter, relies on the ability to accurately control quantum systems. Quantum control is often compromised by the interaction of the system with its environment since this causes loss of amplitude and phase. However, when the dynamics of the open quantum…
Hongli Yang, Guohui Yu, Ivan Ganchev Ivanov, Adrian-Mihail Stoica
In this paper, we investigate a Lyapunov trajectory tracking design method that incorporates a Schrödinger equation with a dipole subterm and polarizability. Our findings suggest that the proposed control law can overcome the limitations of certain existing control laws that do not converge. By integrating a quadratic…
Chunlin Chen, Lin-Cheng Wang, Yuanlong Wang
For most practical quantum control systems, it is important and difficult to attain robustness and reliability due to unavoidable uncertainties in the system dynamics or models. Three kinds of typical approaches (e.g., closed-loop learning control, feedback control, and robust control) have been proved to be effective…
Daoyi Dong, Chunlin Chen, Min Jiang, Lin-Cheng Wang
Quantum information technology has been recognized as one of the most promising future technologies (e.g., see [1]). The development of quantum control theory is a key task for practical quantum information technology (e.g., see [2-4]. Recent advances in quantum information technologies and robust quantum information…
M. R. James
This paper explains some fundamental ideas of feedback control of quantum systems through the study of a relatively simple two-level system coupled to optical field channels. The model for this system includes both continuous and impulsive dynamics. Topics covered in this paper include open and closed loop control…
L. D. Tóth
In this review paper, we survey the main concepts and some of the recent developments in quantum feedback control. For consistency and clarity, essential ideas and notations in the theory of open quantum systems and quantum stochastic calculus, as well as continuous measurement theory are developed. We give a general…
Jun Jing, Lian-Ao Wu
We derive an exact one-component equation of motion for the probability amplitude of a target time-dependent state, and use the equation to reformulate quantum dynamics and control for both closed and open systems. Using the one-component equation, we show that an unexpected time-dependent leakage-free path can be…
Hailan Ma, Bo Qi, Ian R Petersen, Re-Bing Wu + 2 more
'Daoyi Dong'] Title: ABSTRACT The advancement of quantum technologies depends on the ability to create and manipulate increasingly complex quantum systems, with critical applications in quantum computation, quantum simulation and quantum sensing. These developments present substantial challenges in efficient control…
Alexander Pechen
The ability to control quantum systems is necessary for many applications of quantum technologies ranging from gate generation in quantum computation to NMR and laser control of chemical reactions. In many practical situations, the controlled quantum systems are open, i.e., interacting with the environment. While often…
Ashkan Balouchi, Kurt Jacobs
We compare the performance of continuous coherent feedback, implemented using an ideal singlequbit controller, to that of continuous measurement-based feedback for the task of controlling the state of a single qubit. Here the basic dynamical resource is the ability to couple the system to a traveling-wave field (for…
Javad Sharifi
Microwave IQ-mixer controllers are designed for the three approximated Hamiltonians of charge, phase and flux qubits and the controllers are exerted both on approximate and precise quantum system models. The controlled qubits are for the implementation of the two quantum-gates with these three fundamental types of…
Arkajit Mandal, Michael Taylor, Braden Weight, Eric Koessler + 2 more
When molecules are coupled to an optical cavity, new light-matter hybrid states, so-called polaritons, are formed due to quantum light-matter interactions. With the experimental demonstrations of modifying chemical reactivities by forming polaritons under strong light-matter interactions, theorists have been encouraged…
Edward Otieno, Katarzyna Matczyszyn, Nelson Mokaya
Quantum computing promises exponential advances in information processing, necessitating the development of appropriate materials for implementing quantum qubits and gates. Liquid crystals, known for their electro-optical characteristics and use in displays, have recently received attention as prospective candidates…
Efe Ilker, Özenç Güngör, Benjamin Kuznets-Speck, Joshua Chiel + 2 more
The biochemical reaction networks that regulate living systems are all stochastic to varying degrees. The resulting randomness affects biological outcomes at multiple scales, from the functional states of single proteins in a cell to the evolutionary trajectory of whole populations. Controlling how the distribution of…
Yu-Chen Wei, Liang-Yan Hsu
Richard Feynman stated that ‘The theory behind chemistry is quantum electrodynamics’. However, harnessing quantum-electrodynamic (QED) effects to modify chemical reactions is a grand challenge and currently has only been reported in experiments using cavities due to the limitation of strong light-matter coupling. In…
Authors not listed
Recent experiments demonstrated the possibilities of modifying ground-state chemical reaction rates by placing an ensemble of molecules in an optical microcavity. A strong collective, resonant coupling between the cavity mode and molecular vibrations forms vibration-polaritons. This regime is commonly referred to as…
Morgan Rosendahl, Jonathan Cohen
Tools from quantum theory have been effectively leveraged in modeling otherwise poorly understood effects in decision-making such as apparent fallacies in probability judgments and context effects. This approach has described the dynamics of two alternative forced choice (2AFC) decisions in terms of the path of a…
Xin Luo, Luigi Ranno, Tara Sverko, Jae Young Lee + 7 more
Incorporation of colloidal quantum emitters into silicon-based photonic devices would enable major advances in quantum optics. However, deterministic placement of individual sub-10 nm colloidal particles onto micron-sized photonic structures with nanometer-scale precision remains an outstanding challenge. Here, we…
Authors not listed
Molecular polaritons are hybrid states formed by the quantum mechanical interaction between light and matter. Recent experiments have shown the ability to drastically modify chemical reactions in both the ground and excited states through the hybridization of the electronic and photonic degrees of freedom. Ab initio…
Don Roosan, Samira Samrose, Rubayat Khan, Saif Nirzhor + 1 more
Predicting protein–ligand binding affinity is a fundamental challenge in computational biology and drug discovery, complicated by diverse factors including protein sequence variability, ligand chemical diversity, and structural resolution. Here, we present an integrative study that combines classical machine learning…
Irfan Lone
In a recent proposal on the experimental tests of quantum gravity creation of non-Gaussianity in a Bose-Einstein condensate (BEC) has been suggested as a decisive confirmation of quantum gravity. In a related proposal, a gas of ultracold Rb or Cs atoms has previously been suggested as a possible platform for tests of…
Authors not listed
This paper formally defines an operational isomorphism between spectral damping in molecular vibronic systems and neuromodulatory control in biological sensory systems. Without asserting causal continuity or physical identity across scales, we show that both domains instantiate the same class of output-selective…