Article
Optics
Aviv Aroch, Ronnie Kosloff, Shimshon Kallush
Summary: Controlling the dynamics of quantum systems is a crucial task in quantum science and technology, and finding the driving field for transforming quantum systems to their objective state is challenging, especially with large quantum maps. To address this issue, we utilize quantum typicality to assist in finding the control field. By applying this method to the cooling of fine-structure states in the aluminum monofluoride molecule at high temperature, we demonstrate the ability to simulate an ensemble of states and address multiple states simultaneously. This approach enables the finding of control fields for cooling molecules with a large number of internal states corresponding to high initial temperatures.
Article
Optics
Julian Huber, Ana Maria Rey, Peter Rabl
Summary: This paper presents an efficient numerical method for simulating the dynamics of interacting spin ensembles in the presence of dephasing and decay. The method combines mean-field dynamics with a Monte Carlo sampling to account for quantum correlations, and can be applied to a variety of experiments in quantum optics or solid-state spin ensembles.
Article
Physics, Multidisciplinary
Jia-shun Yan, Jun Jing
Summary: The double-mode strategy of coherent quantum noise cancellation (CQNC) aims to mitigate backaction noise in optomechanical systems, promoting system stability and sensitivity in weak-force metrology. By exploiting probe mode and ancillary mode coupling, the rotating-wave term and counter-rotating term are found to play different roles in system stability and noise suppression under certain circumstances. This strategy demonstrates a subtle compromise between resonant noise cancellation ratio and effective damping rate, applicable to optomechanical setups with membranes or twisted-cavity-based weak-torque detectors.
ANNALEN DER PHYSIK
(2021)
Article
Automation & Control Systems
Alessandro Duca
Summary: The paper focuses on the dynamics of a particle trapped in networks of electrical wires or electromagnetic wave-guides under the influence of an external electromagnetic field, studying the controllability of motion and extending existing theory for bilinear quantum systems to graphs. Mathematical assumptions on the network and potential field are determined to ensure global exact controllability in suitable spaces, with practical implications discussed for specific problems involving star-shaped networks and tadpole graphs.
Article
Physics, Multidisciplinary
Karl Pelka, Guilhem Madiot, Remy Braive, Andre Xuereb
Summary: Cavity optomechanical systems enable the manipulation of mechanical degrees of freedom with light. In this study, we demonstrate that temporally modulated driving can steer mechanical modes and induce transitions between different steady states. Our results also reveal the additional influence of thermo-optic nonlinearity on system dynamics.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
H. Seifoory, Z. Vernon, D. H. Mahler, M. Menotti, Y. Zhang, J. E. Sipe
Summary: In this study, we theoretically investigate the generation of degenerate quadrature squeezing in a dual-pumped integrated microring resonator coupled to a waveguide. We explore the effects of pump detunings on different nonlinear processes and show that symmetrically detuning the two pumps can significantly enhance the output squeezing quality.
Article
Optics
Yousef K. Chahine, Ian R. Nemitz, John D. Lekki
Summary: This paper proposes a protocol to automatically identify and discard errors from stimulated multiphoton emissions by alternating the Bell state measurement basis in concatenated entanglement swapping links. It is shown that the protocol can completely eliminate the quadratic growth of multiphoton errors and enable more robust links in the presence of imbalanced channel losses. The analysis introduces a convenient calculus based on Clifford algebra for modeling concatenated entanglement swapping links with multiphoton emissions.
Article
Mathematics, Interdisciplinary Applications
Naima Hakkar, Rajesh Dhayal, Amar Debbouche, Delfim F. M. Torres
Summary: We present a new class of impulsive fractional stochastic differential systems driven by mixed fractional Brownian motions with infinite delay and Hurst parameter H<^>& ISIN;(1/2,1). Using fixed point techniques, a q-resolvent family, and fractional calculus, we investigate the existence of a piecewise continuous mild solution for the proposed system. Additionally, we study the approximate controllability of the considered system under appropriate conditions. The main results are illustrated with a demonstrative example.
FRACTAL AND FRACTIONAL
(2023)
Article
Automation & Control Systems
Lingxiang Cheng, Lin Tie
Summary: This paper investigates the constrained controllability problem of discrete-time bilinear systems. A method is proposed to first prove constrained near-controllability of a special class of systems and then approximate constrained controllability of general systems. Conditions for constrained controllability are derived, with easily computable upper bounds for control inputs. Examples and algorithms are provided to demonstrate the results of the paper.
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
(2022)
Article
Physics, Applied
Yanjun Chen, Yuwen Cao, Lanxin Zhu, Yan He, Wenbo Wang, Huimin Huang, Xiangdong Ma, Zhengbin Li
Summary: Temperature variation impairs the performance of fiber-optic gyroscopes. Based on a noise mechanism, it is found that thermal phase noise contributes significantly to temperature variation in large gyroscopes when the conventional Shupe effect is suppressed. High-order frequency modulation is used to mitigate the effect of temperature variation. A time-varying temperature experiment was conducted for verification. Compared to conventional eigen frequency modulation, the temperature sensitivity was reduced by 32 times, effectively enhancing the temperature adaptability of the fiber-optic gyroscope.
APPLIED PHYSICS LETTERS
(2023)
Article
Mathematics, Interdisciplinary Applications
Lucas Kenji Arima Miranda, Raphael Moratta, Celia Mayumi Kuwana, Makoto Yoshida, Juliano Antonio de Oliveira, Edson Denis Leonel
Summary: In this study, an order parameter is identified in the transition from limited to unlimited chaotic diffusion in a dissipative standard mapping. The suppression of unlimited chaotic diffusion is proven to be caused by the presence of a continuous phase transition. The investigation of the main properties of the transition for long-time dynamics is enabled by obtaining the average squared action. The main questions focus on characterizing the order of this phase transition and understanding the elementary excitation of the dynamics that affects the transport of particles in the system.
CHAOS SOLITONS & FRACTALS
(2022)
Article
Quantum Science & Technology
Maria Laura Olivera-Atencio, Lucas Lamata, Jesus Casado-Pascual
Summary: Quantum machine learning (QML), which has the potential to revolutionize data processing, faces challenges from environmental noise and dissipation.While traditional efforts seek to combat these hindrances, this perspective proposes harnessing them for potential advantages.Surprisingly, under certain conditions, noise and dissipation can benefit QML.Adapting to open quantum systems holds potential for groundbreaking discoveries that may reshape the future of quantum computing.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Biochemical Research Methods
Sugyun An, So-Yeong Jang, Sang-Min Park, Chun-Kyung Lee, Hoon-Min Kim, Kwang-Hyun Cho
Summary: Researchers have discovered that optimal global stabilizing control targets can be identified by analyzing the dynamics between structurally identified control targets. Based on this discovery, they developed a scalable global stabilizing control framework using both structural and dynamic information. They found that the proposed global stabilizing control is superior in terms of the number of control target nodes, scalability, and computational complexity.
Article
Automation & Control Systems
Imad El Harraki, Ilyasse Lamrani
Summary: This work investigates the local exponential stabilization of semilinear parabolic systems using multiplicative controls. An exponential feedback control is constructed to drive the solution to equilibrium. A bilinear controller is designed based on the stabilization result to drive the system solution to the desired state. Applications and simulations are provided for the Fitzhugh-Nagumo equation and the heat equation.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2023)
Article
Mathematics
Zhiyue Zuo, Wenqi Peng, Hui Xian, Wenqi Jiang, Hao Luo, Sha Xiong, Ying Guo
Summary: This study proposes a data post-processing method based on clustering to suppress the signal intensity fluctuation of satellite-mediated links, thereby improving the secret key rate of the quantum key distribution protocol.
Article
Physics, Multidisciplinary
Alhun Aydin, Altug Sisman, Ronnie Kosloff
Article
Physics, Multidisciplinary
Roie Dann, Ronnie Kosloff
NEW JOURNAL OF PHYSICS
(2020)
Article
Chemistry, Physical
Bar Ezra, Shimshon Kallush, Ronnie Kosloff
CHEMICAL PHYSICS LETTERS
(2020)
Article
Optics
Liat Levin, Daniel M. Reich, Moran Geva, Ronnie Kosloff, Christiane P. Koch, Zohar Amitay
Summary: By utilizing quantum coherent control, it is possible to manipulate the relative yields of Mg-2 molecules generated through photoassociation and drive them into different final states. This can be achieved by controlling the branching ratio with linearly chirped laser pulses, demonstrating the feasibility of high degree coherent control over quantum molecular dynamics initiated by femtosecond photoassociation of thermal atoms.
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
Chang-Kang Hu, Roie Dann, Jin-Ming Cui, Yun-Feng Huang, Chuan-Feng Li, Guang-Can Guo, Alan C. Santos, Ronnie Kosloff
Summary: The experiment with trapped ytterbium ions validates the inertial theorem for the SU(2) algebra, providing analytical solutions for non-adiabatically driven systems and bridging the gap between sudden and adiabatic limits. The results demonstrate the stability of these solutions to small deviations, paving the way for rapid quantum control of closed and open quantum systems. The inertial theorem shows good robustness in phase estimation, even in the presence of large deviations from the inertial condition.
NEW JOURNAL OF PHYSICS
(2021)
Article
Quantum Science & Technology
Roie Dann, Ronnie Kosloff
Summary: The research integrates the quantum dynamics of driven open systems with thermodynamic principles through an axiomatic approach, resulting in a thermodynamically consistent master equation. In the appropriate physical limit, the control is incorporated into the system Hamiltonian as a time-dependent term, leading to a semi-classical description. The theory is demonstrated by analyzing a qubit controlled by a single bosonic mode in a coherent state, highlighting the crucial role of coherence in the initial control state.
Article
Multidisciplinary Sciences
Shimshon Kallush, Roie Dann, Ronnie Kosloff
Summary: Control of open quantum systems is crucial for contemporary quantum science and technology. We propose a thermodynamically consistent framework that takes into account the modifications of system-environment interactions caused by driving forces, enabling control-dependent dissipation.
Article
Physics, Multidisciplinary
Uriel Shafir, Ronnie Kosloff
Summary: This paper presents an efficient algorithm for simulating the dynamics of open quantum systems. The algorithm utilizes stochastic wave functions and collision sequences to model the dynamics and interactions between the system and the environment, reducing complexity and enabling implementation on quantum computers.
Article
Physics, Multidisciplinary
Roie Dann, Ronnie Kosloff
Summary: The principles of classical thermodynamics are based on similar microscopic laws derived from the fundamental axioms of quantum mechanics. These laws define quantum thermodynamic variables and characterize the transformations of open quantum systems. The conservation of energy is the most important quantum thermodynamic law, but there is ambiguity and disagreement regarding the partition of energy change into work and heat for quantum systems. By treating quantum mechanics as a comprehensive theory and using dynamical symmetries, we bridge the gaps between different approaches to the first law of thermodynamics.
NEW JOURNAL OF PHYSICS
(2023)
Article
Physics, Multidisciplinary
Roie Dann, Nina Megier, Ronnie Kosloff
Summary: This article introduces the use of dynamical symmetry to determine the structure of the quantum non-Markovian time-local master equation. The structure consists of scalar kinetic coefficients and the standard quantum Markovian operator form. The method is illustrated with specific examples and a first principle calculation of the kinetic coefficients is proposed.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Physics, Multidisciplinary
Roie Dann, Ronnie Kosloff
Summary: The text discusses the relationship between thermodynamics and quantum Markovian dynamics, proving the general form of the master equation through mathematical conditions and spectral analysis. It extends thermodynamical considerations to dynamical processes and compares results with master equations from microscopic derivations. The findings suggest that coherence is not generated spontaneously under steady-state transport, and the global master equation is the thermodynamically compatible choice for nondriven systems in a bipartite system-environment setup.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Physics, Multidisciplinary
Roie Dann, Ronnie Kosloff
Summary: The theorem presented describes stable solutions for a driven quantum system, applicable for fast driving with a small acceleration rate. It states that in the inertial limit, eigenoperators of the propagator remain invariant throughout the dynamics, accumulating dynamical and geometric phases. Applications of the theorem are demonstrated by studying explicit solutions of various system models, showing that the inertial solution is superior to the adiabatic approximation. Additionally, the inertial theorem is employed to extend the validity of the Markovian master equation to strongly driven open quantum systems, exploring the consequences of geometric phases associated with driving parameters.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Physics, Multidisciplinary
Roie Dann, Ronnie Kosloff, Peter Salamon
Article
Optics
Roie Dann, Ander Tobalina, Ronnie Kosloff
Article
Optics
Ido Schaefer, Ronnie Kosloff
