output
20162026
most citedRealization of an Error-Correcting Surface Code with Superconducting Qubits

341 citations

Showing 2021 · quant-phShow all

27 papers · 2 filters

quant-ph2021★ 21 cited

Schrödinger-Heisenberg Variational Quantum Algorithms

Zhong-Xia Shang, Ming-Cheng Chen, Xiao Yuan +2

Recent breakthroughs have opened the possibility to intermediate-scale quantum computing with tens to hundreds of qubits, and shown the potential for solving classical challenging…

quant-ph2021★ 119 cited

Closing the "Quantum Supremacy" Gap: Achieving Real-Time Simulation of a Random Quantum Circuit Using a New Sunway Supercomputer

Yong, Liu, Xin +13

We develop a high-performance tensor-based simulator for random quantum circuits(RQCs) on the new Sunway supercomputer. Our major innovations include: (1) a near-optimal slicing sc…

quant-ph2021★ 68 cited

Excite atom-photon bound state inside the coupled-resonator waveguide coupled with a giant atom

Han Xiao, Luojia Wang, Zhenghong Li +2

It is of fundamental interest in controlling the light-matter interaction for a long time in the field of quantum information processing. However, usual excitation with the propaga…

quant-ph2021★ 4 cited

Quantum metrology with Bloch Oscillations in Floquet phase space

Keye Zhang, Weijie Liang, Pierre Meystre +1

Quantum particles performing Bloch oscillations in a spatially periodic potential can be used as a very accurate detector of constant forces. We find that the similar oscillations…

quant-ph2021★ 6 cited

Hard instance learning for quantum adiabatic prime factorization

Jian Lin, Zhengfeng Zhang, Junping Zhang +1

Prime factorization is a difficult problem with classical computing, whose exponential hardness is the foundation of Rivest-Shamir-Adleman (RSA) cryptography. With programmable qua…

quant-ph2021★ 62 cited

Device-independent quantum key distribution with random postselection

Feihu Xu, Yu-Zhe Zhang, Qiang Zhang +1

Device-independent quantum key distribution (QKD) can permit the superior security even with unknown devices. In practice, however, the realization of device-independent QKD is tec…

quant-ph2021★ 133 cited

Photonic verification of device-independent quantum key distribution against collective attacks

Wen-Zhao Liu, Yu-Zhe Zhang, Yi-Zheng Zhen +6

In this paper, we employ theoretical and experimental efforts and realize a proof-of-principle verification of device-independent QKD based on the photonic setup. On the theoretica…

quant-ph2021★ 1 cited

Fermion Sampling Made More Efficient

Haoran Sun, Jie Zou, Xiaopeng Li

Fermion sampling is to generate probability distribution of a many-body Slater-determinant wavefunction, which is termed "determinantal point process" in statistical analysis. For…

quant-ph2021★ 29 cited

Realization of high-fidelity CZ gates in extensible superconducting qubits design with a tunable coupler

Yangsen Ye, Sirui Cao, Yulin Wu +20

High-fidelity two-qubits gates are essential for the realization of large-scale quantum computation and simulation. Tunable coupler design is used to reduce the problem of parasiti…

quant-ph2021★ 2 cited

Erasing the which-path information of photons

Jinxian Guo, Qizhang Yuan, Yuan Wu +1

Which-path information of a quantum particle in interferometers is the key to infer the past of quantum particle. It arises many extensive discussions including quantum complementa…

quant-ph2021★ 12 cited

Deep recurrent networks predicting the gap evolution in adiabatic quantum computing

Naeimeh Mohseni, Carlos Navarrete-Benlloch, Tim Byrnes +1

In adiabatic quantum computing finding the dependence of the gap of the Hamiltonian as a function of the parameter varied during the adiabatic sweep is crucial in order to optimize…

quant-ph2021★ 19 cited

Floquet Prethermal Phase Protected by U(1) Symmetry on a Superconducting Quantum Processor

Chong Ying, Qihao Guo, Shaowei Li +22

Periodically driven systems, or Floquet systems, exhibit many novel dynamics and interesting out-of-equilibrium phases of matter. Those phases arising with the quantum systems' sym…

quant-ph2021★ 8 cited

Quantum non-demolition measurement based on an SU(1,1)-SU(2)-concatenated atom-light hybrid interferometer

Gao-Feng Jiao, Keye Zhang, L. Q. Chen +2

Quantum non-demolition (QND) measurement is an important tool in the field of quantum information processing and quantum optics. The atom-light hybrid interferometer is of great in…

quant-ph2021★ 24 cited

Deep Learning of Quantum Many-Body Dynamics via Random Driving

Naeimeh Mohseni, Thomas Fösel, Lingzhen Guo +2

Neural networks have emerged as a powerful way to approach many practical problems in quantum physics. In this work, we illustrate the power of deep learning to predict the dynamic…

quant-ph2021★ 18 cited

Arbitrary synthetic dimensions via multi-boson dynamics on a one-dimensional lattice

Dali Cheng, Bo Peng, Da-Wei Wang +3

The synthetic dimension, a research topic of both fundamental significance and practical applications, is attracting increasing attention in recent years. In this paper, we propose…

quant-ph2021★ 37 cited

Simple Quantum Key Distribution using a Stable Transmitter-Receiver Scheme

Di Ma, Xin Liu, Chunfeng Huang +3

Quantum Key Distribution (QKD) is a technology that allows secure key exchange between two distant users. A widespread adoption of QKD requires the development of simple, low-cost,…

quant-ph2021

Constraint-induced breaking and restoration of ergodicity in spin-1 PXP models

Bhaskar Mukherjee, Zi Cai, W. Vincent Liu

Eigenstate Thermalization Hypothesis(ETH) has played a pivotal role in understanding ergodicity and its breaking in isolated quantum many-body systems. Recent experiment on 51-atom…

quant-ph2021★ 13 cited

Effects of losses on the sensitivity of an actively correlated Mach-Zehnder interferometer

Qiang Wang, Gao-Feng Jiao, Zhifei Yu +3

We theoretically studied the quantum Cramér-Rao bound of an actively correlated Mach-Zehnder interferometer (ACMZI), where the quantum Fisher information obtained by the phase-aver…

quant-ph2021★ 118 cited

Ruling out real-valued standard formalism of quantum theory

Ming-Cheng Chen, Can Wang, Feng-Ming Liu +13

Standard quantum theory was formulated with complex-valued Schrodinger equations, wave functions, operators, and Hilbert spaces. Previous work attempted to simulate quantum systems…

quant-ph2021★ 17 cited

Long-range-ordered phase in a quantum Heisenberg chain with interactions beyond nearest neighbors

Zehan Li, Sayan Choudhury, W. Vincent Liu

Spin ensembles coupled to optical cavities provide a powerful platform for engineering synthetic quantum matter. Recently, we demonstrated that cavity mediated infinite range inter…

quant-ph2021

Quantum Non-demolition Measurements in the Relativistic Dirac Oscillator

Wei Sun, Keye Zhang, Pierre Meystre +1

We investigate the feasibility of performing quantum non-demolition (QND) measurements in relativistic quantum systems, using the one-dimensional Dirac oscillator as a specific exa…

quant-ph2021

Observation of strong and weak thermalization in a superconducting quantum processor

Fusheng Chen, Zheng-Hang Sun, Ming Gong +22

We experimentally study the ergodic dynamics of a 1D array of 12 superconducting qubits with a transverse field, and identify the regimes of strong and weak thermalization with dif…

quant-ph2021★ 29 cited

Topological holographic quench dynamics in a synthetic dimension

Danying Yu, Bo Peng, Xianfeng Chen +2

The notion of topological phases extended to dynamical systems stimulates extensive studies, of which the characterization of non-equilibrium topological invariants is a central is…

quant-ph2021★ 11 cited

Improved Spatial Resolution Achieved by Chromatic Intensity Interferometry

Lu-Chuan Liu, Luo-Yuan Qu, Cheng Wu +8

Interferometers are widely used in imaging technologies to achieve enhanced spatial resolution, but require that the incoming photons be indistinguishable. In previous work, we bui…