Xiang Fu
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View article: Tunable quasi-bound states in the continuum with intrinsic chirality in a phase-change metasurface
Tunable quasi-bound states in the continuum with intrinsic chirality in a phase-change metasurface Open
The realization of switchable high- Q factors with intrinsic chirality is of paramount importance for various applications involving active and nonlinear metadevices that exhibit chiral responses. Here, we present a chiral metasurface that…
View article: Learning and forecasting open quantum dynamics with correlated noise
Learning and forecasting open quantum dynamics with correlated noise Open
The development of practical quantum processors relies on the ability to control and predict their functioning despite the presence of noise. This is particularly challenging for temporarily correlated noise. Here we propose a physics-insp…
View article: An Advanced DNA‐Inspired Gray Wolf Algorithm for Kinetic Parameter Estimation in Supercritical Water Oxidation
An Advanced DNA‐Inspired Gray Wolf Algorithm for Kinetic Parameter Estimation in Supercritical Water Oxidation Open
Inspired by the genetic evolution mechanism of DNA, a hybrid DNA Gray Wolf Optimizer (hDNA‐GWO) is proposed to develop an accurate kinetic model. This algorithm incorporates innovative DNA encoding, selection, crossover, and mutation opera…
View article: Enhanced T-cell activation and chemokine-associated function in CD14-positive cells from venous sinus blood in sub-acute cerebral venous sinus thrombosis
Enhanced T-cell activation and chemokine-associated function in CD14-positive cells from venous sinus blood in sub-acute cerebral venous sinus thrombosis Open
Background Patients with sub-acute cerebral venous sinus thrombosis experience (SA.CVST) severe symptoms compared to two other venous sinus-related diseases, including chronic cerebral venous sinus thrombosis (C.CVST) and idiopathic intrac…
View article: High Performance Im2win and Direct Convolutions using Three Tensor Layouts on SIMD Architectures
High Performance Im2win and Direct Convolutions using Three Tensor Layouts on SIMD Architectures Open
Convolution is the core component within deep neural networks and it is computationally intensive and time consuming. Tensor data layouts significantly impact convolution operations in terms of memory access and computational efficiency. Y…
View article: Quantum generative adversarial learning in photonics
Quantum generative adversarial learning in photonics Open
Quantum generative adversarial networks (QGANs), an intersection of quantum computing and machine learning, have attracted widespread attention due to their potential advantages over classical analogs. However, in the current era of noisy …
View article: Experimental quantum natural gradient optimization in photonics
Experimental quantum natural gradient optimization in photonics Open
Variational quantum algorithms (VQAs) combining the advantages of parameterized quantum circuits and classical optimizers, promise practical quantum applications in the noisy intermediate-scale quantum era. The performance of VQAs heavily …
View article: Variational Entanglement-Assisted Quantum Process Tomography with Arbitrary Ancillary Qubits
Variational Entanglement-Assisted Quantum Process Tomography with Arbitrary Ancillary Qubits Open
Quantum process tomography is a pivotal technique in fully characterizing quantum dynamics. However, exponential scaling of the Hilbert space with the increasing system size extremely restrains its experimental implementations. Here, we pu…
View article: Large-scale full-programmable quantum walk and its applications
Large-scale full-programmable quantum walk and its applications Open
With photonics, the quantum computational advantage has been demonstrated on the task of boson sampling. Next, developing quantum-enhanced approaches for practical problems becomes one of the top priorities for photonic systems. Quantum wa…
View article: Optimization of quantum light sources and four-wave mixing based on a reconfigurable silicon ring resonator
Optimization of quantum light sources and four-wave mixing based on a reconfigurable silicon ring resonator Open
Being a key component on a photonic chip, the microring usually specializes in a certain nonlinear optical process and can not simultaneously meet different working conditions for different processes. Here, we theoretically and experimenta…
View article: Continuous Lumbar Plexus Block under the Guidance of the “Shamrock Method” Ultrasound: Analgesic Effects and Hemodynamic Effects after Total Knee Arthroplasty in Elderly Patients
Continuous Lumbar Plexus Block under the Guidance of the “Shamrock Method” Ultrasound: Analgesic Effects and Hemodynamic Effects after Total Knee Arthroplasty in Elderly Patients Open
Objective. To explore the effect of continuous lumbar plexus block guided by the “Shamrock method” on postoperative analgesia and hemodynamics in elderly patients after total knee arthroplasty (TKA). Methods. From January 2020 to December …
View article: General quantum Bernoulli factory: framework analysis and experiments
General quantum Bernoulli factory: framework analysis and experiments Open
The unremitting pursuit for quantum advantages gives rise to the discovery of\na quantum-enhanced randomness processing named quantum Bernoulli factory (QBF).\nThis quantum enhanced process can show its priority over the corresponding\ncla…
View article: Implementing graph-theoretic quantum algorithms on a silicon photonic quantum walk processor
Implementing graph-theoretic quantum algorithms on a silicon photonic quantum walk processor Open
Programmable silicon photonics realizes universal control over quantum walks.
View article: Robust countermeasure against detector control attack in a practical quantum key distribution system: comment
Robust countermeasure against detector control attack in a practical quantum key distribution system: comment Open
The physical imperfections of quantum key distribution systems compromise their information-theoretic security. By exploiting the imperfections on the detection unit, an eavesdropper can launch various detector-control attacks to steal the…
View article: CC-Light eQASM Architecture Specification
CC-Light eQASM Architecture Specification Open
This document is the specification of the CC-Light instantiation of executable QASM (eQASM), a quantum instruction set architecture (QISA) developed in QuTech targeting to control a seven-qubit superconducting quantum processor. This docum…
View article: Variational quantum circuits for quantum state tomography
Variational quantum circuits for quantum state tomography Open
Quantum state tomography is a key process in most quantum experiments. In this work, we employ quantum machine learning for state tomography. Given an unknown quantum state, it can be learned by maximizing the fidelity between the output o…
View article: Protecting quantum entanglement from leakage and qubit errors via repetitive parity measurements
Protecting quantum entanglement from leakage and qubit errors via repetitive parity measurements Open
We protect two-transmon entanglement from qubit leakage using the same parity checks used to correct standard qubit errors.
View article: General-Purpose Quantum Circuit Simulator with Projected Entangled-Pair States and the Quantum Supremacy Frontier
General-Purpose Quantum Circuit Simulator with Projected Entangled-Pair States and the Quantum Supremacy Frontier Open
Recent advances on quantum computing hardware have pushed quantum computing to the verge of quantum supremacy. Here, we bring together many-body quantum physics and quantum computing by using a method for strongly interacting two-dimension…
View article: Experimental error mitigation via symmetry verification in a variational quantum eigensolver
Experimental error mitigation via symmetry verification in a variational quantum eigensolver Open
Variational quantum eigensolvers offer a small-scale testbed to demonstrate\nthe performance of error mitigation techniques with low experimental overhead.\nWe present successful error mitigation by applying the recently proposed\nsymmetry…
View article: Protecting quantum entanglement from qubit errors and leakage via repetitive parity measurements
Protecting quantum entanglement from qubit errors and leakage via repetitive parity measurements Open
Protecting quantum information from errors is essential for large-scale quantum computation. Quantum error correction (QEC) encodes information in entangled states of many qubits, and performs parity measurements to identify errors without…
View article: Error Mitigation by Symmetry Verification on a Variational Quantum Eigensolver
Error Mitigation by Symmetry Verification on a Variational Quantum Eigensolver Open
Variational quantum eigensolvers offer a small-scale testbed to demonstrate the performance of error mitigation techniques with low experimental overhead. We present successful error mitigation by applying the recently proposed symmetry ve…
View article: eQASM: An Executable Quantum Instruction Set Architecture
eQASM: An Executable Quantum Instruction Set Architecture Open
A widely-used quantum programming paradigm comprises of both the data flow and control flow. Existing quantum hardware cannot well support the control flow, significantly limiting the range of quantum software executable on the hardware. B…
View article: A Microarchitecture for a Superconducting Quantum Processor
A Microarchitecture for a Superconducting Quantum Processor Open
[EN] This article proposes a quantum microarchitecture,\nQuMA. Flexible programmability of a quantum\nprocessor is achieved by multilevel instructions\ndecoding, abstracting analog control into digital\ncontrol, and translating instruction…
View article: Quantum Control Architecture: Bridging the Gap between Quantum Software and Hardware
Quantum Control Architecture: Bridging the Gap between Quantum Software and Hardware Open
Quantum computers can accelerate solving some problems which are inefficiently solved by classical computers, such as quantum chemistry simulation. To date, quantum computer engineering has focused primarily at opposite ends of the require…
View article: Switching and optimizing control for coal flotation process based on a hybrid model
Switching and optimizing control for coal flotation process based on a hybrid model Open
Flotation is an important part of coal preparation, and the flotation column is widely applied as efficient flotation equipment. This process is complex and affected by many factors, with the froth depth and reagent dosage being two of the…