Showing 2020 · quant-phShow all

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quant-ph2020★ 11 cited

Deep learning Local Reduced Density Matrices for Many-body Hamiltonian Estimation

Xinran Ma, Z. C. Tu, Shi-Ju Ran

Human experts cannot efficiently access the physical information of quantum many-body states by simply "reading" the coefficients, but have to reply on the previous knowledge such…

quant-ph2020★ 12 cited

Hybrid coupling optomechanically assisted nonreciprocal photon blockade

Yong-Pan Gao, Chuan Wang

The properties of open quantum system in quantum information science is now extensively investigated more generally by the research community as a fundamental issue for a variety o…

quant-ph2020★ 9 cited

Characterization of quantum and classical correlations in the Earth curved space-time

Tonghua Liu, Shuo Cao, Shumin Wu

The preparation of quantum systems and the execution of quantum information tasks between distant users are always affected by gravitational and relativistic effects. In this work,…

quant-ph2020★ 4 cited

Scalable multiphoton generation from cavity-synchronized single-photon sources

Ming Li, Juan José García-Ripoll, Tomás Ramos

We propose an efficient, scalable, and deterministic scheme to generate multiple indistinguishable photons over independent channels, on demand. Our design relies on multiple singl…

quant-ph2020★ 3 cited

A single measurement scheme for quantum work statistics based on coherent or squeezing state

Bao-Ming Xu, Jian Zou, Zhan-Chun Tu

In order to investigate the role of initial quantum coherence in work probability distribution, it is necessary to explicitly consider a concrete measurement apparatus to record wo…

quant-ph2020★ 36 cited

Exact and efficient quantum simulation of open quantum dynamics for various of Hamiltonians and spectral densities

Na-Na Zhang, Ming-Jie Tao, Wan-Ting He +6

Recently, we have theoretically proposed and experimentally demonstrated an exact and efficient quantum simulation of photosynthetic light harvesting in nuclear magnetic resonance…

quant-ph2020★ 20 cited

Estimating a fluctuating magnetic field with a continuously monitored atomic ensemble

Cheng Zhang, Klaus Molmer

We study the problem of estimating a time dependent magnetic field by continuous optical probing of an atomic ensemble. The magnetic field is assumed to follow a stochastic Ornstei…

quant-ph2020★ 35 cited

Experimental simulation of the Parity-Time-symmetric dynamics using photonics qubits

Wei-Chao Gao, Chao Zheng, Lu Liu +2

The concept of parity-time (PT) symmetry originates from the framework of quantum mechanics, where if the Hamiltonian operator satisfies the commutation relation with the parity an…

quant-ph2020★ 8 cited

Quantum fluctuation of entanglement for accelerated two-level detectors

Sixuan Zhang, Tonghua Liu, Shuo Cao +3

Quantum entanglement as the one of the most general quantum resources, can be quantified by von Neumann entropy. However, as we know, the von Neumann entropy is only statistical qu…

quant-ph2020★ 18 cited

Resilience of the superradiant phase against effects in the quantum Rabi dimer

Yimin Wang, Maoxin Liu, Wen-Long You +3

We explore the quantum criticality of a two-site model combining quantum Rabi models with hopping interaction. Through a combination of analytical and numerical approaches, we find…

quant-ph2020★ 2 cited

Double-dot interferometer for quantum measurement of Majorana qubits and stabilizers

Kai Zhou, Cheng Zhang, Lupei Qin +1

Motivated by the need of quantum measurement of Majorana qubits and surface-code stabilizers, we analyze the performance of a double-dot interferometer under the influence of envir…

quant-ph2020

Enhanced pair production in frequency modulated Sauter potential wells

Li Wang, Binbing Wu, Lie-Juan Li +1

Electron-positron pair production in frequency modulated Sauter potential wells is investigated in the framework of the computational quantum field theory. In combined potential we…