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New Journal of Physics
Scopus
ISSN 1367-2630 · IOP Publishing · 9.370 artikel di indeks
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Artikel Jurnal
Quantum entanglement of anyonic charges and emergent spacetime geometry
Intrinsically topologically ordered phases can host anyons. Here, we take the view that entanglement between anyons can give rise to an emergent geometry resembling Anti-de Sitter (AdS) space. We analyze the entanglement structure of fractionalized anyons using mutual information and interpret the…
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Artikel Jurnal
Spin Hall effect from soliton dynamics in organic polymers
Applying the extended Su–Schrieffer–Heeger model and the nonadiabatic dynamics method, the spin Hall effect (SHE) from soliton transport in two-dimensional organic ladders is investigated. An oscillating SHE is obtained by calculating the time-dependent charge and spin transfer between chains. By…
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Artikel Jurnal
Knowledge distillation inspired variational quantum eigensolver with virtual annealing
In this paper, we propose a knowledge distillation inspired variational quantum eigensolver (KD-VQE). Inspired by the virtual distillation process in KD, KD-VQE introduces a virtual annealing mechanism to the VQE framework. In KD-VQE, measurement resources (shots) are dynamically allocated among…
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Artikel Jurnal
Entropy production in non-reciprocal polar active mixtures
The out-of-equilibrium character of active systems is often twofold, arising from both the activity itself and from non-reciprocal couplings between constituents. A well-established measure to quantify the system’s distance from equilibrium is the informatic entropy production rate. Here, we ask…
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Artikel Jurnal
From the Bloch equation to the thermodynamically consistent master equation
The Bloch equation which first inspired the field of open quantum systems, was conceived by pure physical reasoning. Since then, the Lindblad (GKLS) form of a quantum master equation, its most general mathematical representation, became an established staple in the open quantum systems toolbox. It…
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Artikel Jurnal
Nonreciprocal microcombs via spinning optomechanics
On-chip optical frequency combs (microcombs) are critical for advanced photonic technologies. However, achieving broad bandwidth and nonreciprocal control in a single microcomb device remains a formidable challenge. Here, we demonstrate the generation of a robust microcomb (a bandwidth exceeding…
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Artikel Jurnal
Adaptive quantum channel discrimination using methods of quantum metrology
We present an efficient tensor-network based algorithm for finding the optimal adaptive quantum channel discrimination strategies inspired by recently developed numerical methods in quantum metrology to find the optimal adaptive channel estimation protocols. We examine the connection between…
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Artikel Jurnal
Dynamics of a mobile ion in a Bose–Einstein condensate
Characterization of the dynamics of an impurity immersed in a quantum medium is vital for fundamental understanding of matter as well as applications in modern day quantum technologies. The case of long-ranged interactions is of particular importance here, as it opens the possibility to leverage…
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Artikel Jurnal
Universal shape-dependence of quantum entanglement in disordered magnets
Disordered quantum magnets are not only experimentally relevant, but offer efficient computational methodologies to calculate the low energy states as well as various measures of quantum correlations. We present a systematic analysis of quantum entanglement in the paradigmatic random…
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Artikel Jurnal
Inter-transition interference in spectrum of Kerr parametric oscillators
A Kerr parametric oscillator (KPO) is a Kerr-nonlinear resonator driven parametrically, which can serve as a qubit in quantum information processing. Spectroscopy using a weak probe field provides a practical method for extracting system parameters. In this work, we theoretically investigate…
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Artikel Jurnal
Photon emission without quantum jumps
When modelling photon emission, we often assume that the emitter experiences a random quantum jump. When a quantum jump occurs, the emitter transitions suddenly into a lower energy level, while spontaneously generating a single photon. However, this point of view is misleading when modelling…
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Artikel Jurnal
Directional topological transport enabled by engineered nonlocal coupling in elastic lattices
Topological pumping provides a robust mechanism for wave transport protected by band topology, but conventional implementations require strict adiabatic conditions and produce identical transport in both directions. Here, we demonstrate directional topological transport in an elastic Rice-Mele…
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Artikel Jurnal
Classical and quantum chaotic synchronization in coupled dissipative time crystals
We investigate the dynamics of two coherently coupled dissipative time crystals. In the classical mean-field limit of infinite spin length, we identify a regime of chaotic synchronization, marked by a positive largest Lyapunov exponent and a Pearson correlation coefficient close to one. At the…
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Artikel Jurnal
Stochastic two-temperature nonequilibrium Ising model
We investigate the nonequilibrium stationary state (NESS) of the two-dimensional Ising model under a stochastic dichotomous modulation of temperature, which alternates between $T_\textrm{c} \pm \delta$ around the critical temperature $T_\textrm{c}$ at a rate γ . Both magnetisation and energy…
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Artikel Jurnal
Quantum-driven sampling of the almost-uniform distribution via quantum walks
We investigate the use of discrete-time quantum walks to sample from an almost-uniform distribution, in the absence of any external source of randomness. Integers are encoded on the vertices of a cycle graph, and a quantum walker evolves for a fixed number of steps before its position is measured…
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Artikel Jurnal
Bridge-module-induced unihemispheric-sleep-like oscillations on connected excitable complex networks
The introduction of a bridge module between multiple networks may bring forth new possibility of collective dynamical behaviors. In this paper, by exploring the sustained oscillatory behaviors of bridge-module-connected excitable networks, a double-mode oscillation can self-organize to emerge…
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Artikel Jurnal
Convective space-time chaos as a dynamical model of deterministic and stochastic turbulence
Recently, a concept of deterministic and stochastic turbulence has been introduced based on experiments with a boundary layer. In these experiments, the flow was driven with controlled random perturbation; in addition, natural ambient noise was also present. Deterministic property manifested itself…
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Artikel Jurnal
Optical investigation of ultra-slow spin relaxation in 171Yb3+:Y2SiO5 single crystals
We report a detailed investigation of spin relaxation dynamics in the rare-earth-doped crystal ^171 Yb:Y _2 SiO _5 , a promising platform for quantum memory based on atomic frequency combs. The population dynamics among the four ground-state hyperfine levels were studied in the 50 mK–6 K…
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Artikel Jurnal
Precision assessment in non-Hermitian systems: a comparative study of three formalisms
Quantifying measurement precision in quantum systems is vital for advancing quantum technologies such as sensing, communication, and computation. The quantum Fisher information (QFI) sets the ultimate precision bound in Hermitian systems; however, extending this concept to non-Hermitian systems…
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Artikel Jurnal
Practical implementation of arbitrary nonlocal controlled-unitary gate via indefinite causal order
Quantum gate teleportation enables the implementation of nonlocal quantum operations without direct interactions between distant nodes. We propose an efficient protocol for implementing arbitrary controlled-unitary (CU) gates acting on two spatially separated parties via indefinite causal order…
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