41 citations · 380 across the 32 of their papers we have counts for
32 papers
Generalized Nonlinear Imaginary-Time Evolution
Chenyu Shi, Hao Wang, Jin-Fu Chen
Imaginary-time evolution (ITE) is a powerful method for ground-state preparation of a given Hamiltonian. The normalized ITE can be viewed as a gradient flow of the energy expectati…
Optimizing and Certifying Multipartite Permutationally Invariant Bell Inequalities
Jin-Fu Chen, Mengyao Hu, Jordi Tura
Multipartite Bell nonlocality provides a device-independent probe of many-body quantum correlations, but its characterization is limited by the rapid growth of the underlying class…
Extending Covariant Fluctuation Theorems into Quantum Regime through Quasiprobability Approach
Ji-Hui Pei, Tingzhang Shi, Jin-Fu Chen +1
The covariant formulation of stochastic thermodynamics requires treating the stochastic work as a 4-vector, posing significant challenges for quantum systems due to the non-commuta…
Optimizing quantum violation for multipartite facet Bell inequalities
Jin-Fu Chen, Mengyao Hu, Jordi Tura
Nonlocality shapes quantum correlations, revealed through the violation of Bell inequalities. The intersection of all valid Bell inequalities is the so-called local polytope. In mu…
Monitored quantum transport: full counting statistics of a quantum Hall interferometer
C. W. J. Beenakker, Jin-Fu Chen
We generalize the Levitov-Lesovik formula for the probability distribution function of the electron charge transferred through a phase coherent conductor, to include projective mea…
Thermodynamically Consistent Lindbladians for Quantum Stochastic Thermodynamics
Jin-Fu Chen
We develop a Lindblad framework for quantum stochastic thermodynamics to study the nonequilibrium thermodynamics of open quantum systems. Our approach adopts the local quantum deta…
Boosting thermalization of classical and quantum many-body systems
Jin-Fu Chen, Kshiti Sneh Rai, Patrick Emonts +5
Understanding and optimizing the relaxation dynamics of many-body systems is essential both for foundational studies in quantum thermodynamics and for applications such as quantum…
Spectral Gap Optimization for Enhanced Adiabatic State Preparation
Kshiti Sneh Rai, Jin-Fu Chen, Patrick Emonts +1
The preparation of non-trivial states is crucial to the study of quantum many-body physics. Such states can be prepared with adiabatic quantum algorithms, which are restricted by t…
Ergodicity Breaking and Scaling Relations for Finite-Time First-Order Phase Transition
Yu-Xin Wu, Jin-Fu Chen, H. T. Quan
Hysteresis and metastable states are typical features associated with ergodicity breaking in the first-order phase transition. We explore the scaling relations of nonequilibrium th…
Promoting Fluctuation Theorems into Covariant Forms
Ji-Hui Pei, Jin-Fu Chen, H. T. Quan
The principle of covariance, a cornerstone of modern physics, asserts the equivalence of all inertial frames of reference. Fluctuation theorems, as extensions of the second law of…
Optimal control theory for maximum power of Brownian heat engines
Jin-Fu Chen, H. T. Quan
The pursuit of achieving the maximum power in microscopic thermal engines has gained increasing attention in recent studies of stochastic thermodynamics. We employ the optimal cont…
Exploring quasiprobability approach to quantum work in the presence of initial coherence: Advantages of the Margenau-Hill distribution
Ji-Hui Pei, Jin-Fu Chen, H. T. Quan
In quantum thermodynamics, the two-projective-measurement (TPM) scheme provides a successful description of stochastic work only in the absence of initial quantum coherence. Extend…
Heat statistics in the relaxation process of the Edwards-Wilkinson elastic manifold
Yu-Xin Wu, Jin-Fu Chen, Ji-Hui Pei +2
The stochastic thermodynamics of systems with a few degrees of freedom has been studied extensively so far. We would like to extend the study to systems with more degrees of freedo…
Geodesic bound of the minimum energy expense to achieve membrane separation within finite time
Jin-Fu Chen, Ruo-Xun Zhai, C. P. Sun +1
To accomplish a task within limited operation time typically requires an excess expense of energy, whose minimum is of practical importance for the optimal design in various applic…
Hierarchical structure of fluctuation theorems for a driven system in contact with multiple heat reservoirs
Jin-Fu Chen, H. T. Quan
For driven open systems in contact with multiple heat reservoirs, we find the marginal distributions of work or heat do not satisfy any fluctuation theorem, but only the joint dist…
Optimizing Brownian heat engine with shortcut strategy
Jin-Fu Chen
Shortcuts to isothermality provide a powerful method to speed up quasistatic thermodynamic processes within finite-time manipulation. We employ the shortcut strategy to design and…
Speeding up quantum adiabatic processes with dynamical quantum geometric tensor
Jin-Fu Chen
For adiabatic controls of quantum systems, the non-adiabatic transitions are reduced by increasing the operation time of processes. Perfect quantum adiabaticity usually requires th…
Minimal Energy Cost to Initialize a Quantum Bit with Tolerable Error
Yu-Han Ma, Jin-Fu Chen, C. P. Sun +1
Landauer's principle imposes a fundamental limit on the energy cost to perfectly initialize a classical bit, which is only reached under the ideal operation with infinite-long time…
Quantum-classical correspondence principle for heat distribution in quantum Brownian motion
Jin-Fu Chen, Tian Qiu, H. T. Quan
Quantum Brownian motion, described by the Caldeira-Leggett model, brings insights to understand phenomena and essence of quantum thermodynamics, especially the quantum work and hea…
Geodesic path for the minimal energy cost in shortcuts to isothermality
Geng Li, Jin-Fu Chen, C. P. Sun +1
Shortcut to isothermality is a driving strategy to steer the system to its equilibrium states within finite time, and enables evaluating the impact of a control promptly. Finding o…
Efficiency statistics of a quantum Otto cycle
Zhayu Fei, Jin-Fu Chen, Yu-Han Ma
The stochastic efficiency [G. Verley et al., Nat. Commun. 5, 4721 (2014)] was introduced to evaluate the performance of energy-conversion machines in micro-scale. However, such an…
A microscopic theory of Curzon-Ahlborn heat engine
Y. H. Chen, Jin-Fu Chen, Zhaoyu Fei +1
Abstract The Curzon-Ahlborn (CA) efficiency, as the efficiency at the maximum power (EMP) of the endoreversible Carnot engine, has a significant impact on finite-time thermodynamic…
Extrapolating the thermodynamic length with finite-time measurements
Jin-Fu Chen, C. P. Sun, Hui Dong
The excess work performed in a heat-engine process with given finite operation time τis bounded by the thermodynamic length, which measures the distance during the relaxation along…
Hierarchical Coarse-grained Approach to the Duration-dependent Spreading Dynamics in Complex Networks
Jin-Fu Chen, Yi-Mu Du, Hui Dong +1
Various coarse-grained models have been proposed to study the spreading dynamics in the network. A microscopic theory is needed to connect the spreading dynamics with the individua…