Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics

Strolling through a NISQ processor

William J. Munro, Ming Gong, Shudi Wang, C. Zha, M.-C. Chen, He-Liang Huang, Yulin Wu, Qingling Zhu, Yaqin Zhao, Sai Li, Shaojun Guo, He Qian, Yuqing Ye, F. Chen, Chong Ying, Jintao Yu, Daojin Fan, D. Wu, Hong Te Su, H. Deng, Hao Rong, K. Zhang, Sirui Cao, Jin Lin, Yilun Xu, Lihua Sun, Chu Guo, N. Li, Futian Liang, V. M. Bastidas, Kae Nemoto, Yong-Heng Huo, Chao‐Yang Lu, Cheng-Zhi Peng, Xiaobo Zhu, Jiang Pan

Published Jan 1, 2022• 0 citations
Publisher

Abstract

We demonstrate high fidelity multi-particle quantum walks on an 8x8 two-dimensional square superconducting qubit NISQ processor with 62 functional qubits. Further we implement a Mach-Zehnder interferometer where quantum walkers can coherently traverse the circuit.
DOI
10.1364/cleo_qels.2022.ff2i.1

Related papers

Strolling through a NISQ processor

William J. Munro, Ming Gong, Shudi Wang +33 more

We demonstrate multi-particle quantum walks on a two-dimensional NISQ superconducting processor composed of sixty-two functional qubits. Programming the processor allows us to implement a Mach-Zehnder interferometer with interacting quantum walkers coherently traversing it.

Quantum 2.0 Conference and Exhibition•Jan 1, 2022•0 citations

A stroll through a 62 qubit quantum processor

William J. Munro, Ming Gong, Shiyu Wang +33 more

Quantum walks are a well-known powerful technique to perform quantum search algorithms, quantum simulations, and universal quantum computation. They have been extensively explored in the optical regime. In our work we have realized an 8x8 two-dimensional square superconducting qubit array with 62 functional qubits. We have used this processor to demonstrate high fidelity multi-particle quantum walks. The programmability of our processor also allows us to implement a Mach-Zehnder interferometer where quantum walkers can coherently traverse both paths of the interferometer before interfering and exiting it. Our work shows an alternate approach for information processing on these NISQ processors.

Quantum Computing, Communication, and Simulation•Mar 9, 2022•0 citations

Quantum walks on a programmable two-dimensional 62-qubit superconducting processor

Ming Gong, Shiyu Wang, Chen Zha +33 more

Quantum walks are the quantum mechanical analog of classical random walks and an extremely powerful tool in quantum simulations, quantum search algorithms, and even for universal quantum computing. In our work, we have designed and fabricated an 8-by-8 two-dimensional square superconducting qubit array composed of 62 functional qubits. We used this device to demonstrate high-fidelity single- and two-particle quantum walks. Furthermore, with the high programmability of the quantum processor, we implemented a Mach-Zehnder interferometer where the quantum walker coherently traverses in two paths before interfering and exiting. By tuning the disorders on the evolution paths, we observed interference fringes with single and double walkers. Our work is a milestone in the field, bringing future larger-scale quantum applications closer to realization for noisy intermediate-scale quantum processors.

arXiv:2102.02573•Science•May 6, 2021•331 citations

Versatile NISQ processors

William J. Munro

Today’s noisy intermediate-scale quantum (NISQ) era processors have reached an interesting stage in their development where over 50 qubits are routinely available for us. Traditionally these processors have used the gate-based model of quantum computation, however other useful models including quantum walks and analog approaches can be used. As we want versatility for our processors, we will show how they can be used to implement multi photon quantum walks as well digital-analog models for quantum discrimination. In particular we will introduce a model called quantum neural sensing where one can distinguish different states of matter with the measurement of only one qubit.

Quantum Nanophotonic Materials, Devices, and Systems•Oct 5, 2023•0 citations

Quantum walk processes in quantum devices

Anandu Kalleri Madhu, Alexey A. Melnikov, Leonid Evgenevich Fedichkin +2 more

Simulation and programming of current quantum computers as Noisy Intermediate-Scale Quantum (NISQ) devices represent a hot topic at the border of current physical and information sciences. The quantum walk process represents a basic subroutine in many quantum algorithms and plays an important role in studying physical phenomena. Simulating quantum walk processes is computationally challenging for classical processors. With an increasing improvement in qubits fidelity and qubits number in a single register, there is a potential to improve quantum walks simulations substantially. However, efficient ways to simulate quantum walks in qubit registers still have to be explored. Here, we explore the relationship between quantum walk on graphs and quantum circuits. Firstly, we discuss ways to obtain graphs provided quantum circuit. We then explore techniques to represent quantum walk on a graph as a quantum circuit. Specifically, we study hypercube graphs and arbitrary graphs. Our approach to studying the relationship between graphs and quantum circuits paves way for the efficient implementation of quantum walks algorithms on quantum computers.

arXiv:2012.14386•Heliyon•Feb 7, 2023•4 citations

Universal one-dimensional discrete-time quantum walks and their implementation on near term quantum hardware

Shivani Singh, C. Huerta Alderete, Radhakrishnan Balu +3 more

Quantum walks are a promising framework for developing quantum algorithms and quantum simulations. Quantum walks represent an important test case for the application of quantum computers. Here we present different forms of discrete-time quantum walks and show their equivalence for physical realizations. Using an appropriate digital mapping of the position space on which a walker evolves onto the multi-qubit states in a quantum processor, we present different configurations of quantum circuits for the implementation of discrete-time quantum walks in one-dimensional position space. With example circuits for a five qubit machine we address scalability to higher dimensions and larger quantum processors.

•Jan 30, 2020•2 citations
Quantum walks are a well-known powerful technique to perform quantum search algorithms, quantum simulations, and universal quantum computation. They have been extensively explored in the optical regime. In our work we have realized an 8x8 two-dimensional square superconducting qubit array with 62 functional qubits. We have used this processor to demonstrate high fidelity multi-particle quantum walks. The programmability of our processor also allows us to implement a Mach-Zehnder interferometer where quantum walkers can coherently traverse both paths of the interferometer before interfering and exiting it. Our work shows an alternate approach for information processing on these NISQ processors.
Quantum walks are the quantum mechanical analog of classical random walks and an extremely powerful tool in quantum simulations, quantum search algorithms, and even for universal quantum computing. In our work, we have designed and fabricated an 8-by-8 two-dimensional square superconducting qubit array composed of 62 functional qubits. We used this device to demonstrate high-fidelity single- and two-particle quantum walks. Furthermore, with the high programmability of the quantum processor, we implemented a Mach-Zehnder interferometer where the quantum walker coherently traverses in two paths before interfering and exiting. By tuning the disorders on the evolution paths, we observed interference fringes with single and double walkers. Our work is a milestone in the field, bringing future larger-scale quantum applications closer to realization for noisy intermediate-scale quantum processors.
Today’s noisy intermediate-scale quantum (NISQ) era processors have reached an interesting stage in their development where over 50 qubits are routinely available for us. Traditionally these processors have used the gate-based model of quantum computation, however other useful models including quantum walks and analog approaches can be used. As we want versatility for our processors, we will show how they can be used to implement multi photon quantum walks as well digital-analog models for quantum discrimination. In particular we will introduce a model called quantum neural sensing where one can distinguish different states of matter with the measurement of only one qubit.
Simulation and programming of current quantum computers as Noisy Intermediate-Scale Quantum (NISQ) devices represent a hot topic at the border of current physical and information sciences. The quantum walk process represents a basic subroutine in many quantum algorithms and plays an important role in studying physical phenomena. Simulating quantum walk processes is computationally challenging for classical processors. With an increasing improvement in qubits fidelity and qubits number in a single register, there is a potential to improve quantum walks simulations substantially. However, efficient ways to simulate quantum walks in qubit registers still have to be explored. Here, we explore the relationship between quantum walk on graphs and quantum circuits. Firstly, we discuss ways to obtain graphs provided quantum circuit. We then explore techniques to represent quantum walk on a graph as a quantum circuit. Specifically, we study hypercube graphs and arbitrary graphs. Our approach to studying the relationship between graphs and quantum circuits paves way for the efficient implementation of quantum walks algorithms on quantum computers.
Quantum walks are a promising framework for developing quantum algorithms and quantum simulations. Quantum walks represent an important test case for the application of quantum computers. Here we present different forms of discrete-time quantum walks and show their equivalence for physical realizations. Using an appropriate digital mapping of the position space on which a walker evolves onto the multi-qubit states in a quantum processor, we present different configurations of quantum circuits for the implementation of discrete-time quantum walks in one-dimensional position space. With example circuits for a five qubit machine we address scalability to higher dimensions and larger quantum processors.