487 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National University of SingaporeSG147 papers
- Centre for Quantum TechnologiesSG36 papers
- UMI MajuLabSG29 papers
- Centre National de la Recherche ScientifiqueFR25 papers
- Nanyang Technological UniversitySG19 papers
- University of MissouriUS11 papers
- Sorbonne UniversitéFR10 papers
- Yale UniversityUS10 papers
- Singapore University of Technology and DesignSG9 papers
- Université Bourgogne Franche-ComtéFR9 papers
- Monash UniversityAU8 papers
- University College LondonGB8 papers
31 papers · 1 filter
Circuit-level fault tolerance of cat codes
Long D. H. My, Shushen Qin, Hui Khoon Ng
Bosonic codes encode quantum information into a single infinite-dimensional physical system endowed with error correction capabilities. This reduces the need for complex management…
Efficacy of noisy dynamical decoupling
Jiaan Qi, Xiansong Xu, Dario Poletti +1
Dynamical decoupling (DD) refers to a well-established family of methods for error mitigation, comprising pulse sequences aimed at averaging away slowly evolving noise in quantum s…
Optimizing resource efficiencies for scalable full-stack quantum computers
Marco Fellous-Asiani, Jing Hao Chai, Yvain Thonnart +3
In the race to build scalable quantum computers, minimizing the resource consumption of their full stack to achieve a target performance becomes crucial. It mandates a synergy of f…
Quantum metrology with imperfect measurements
Yink Loong Len, Tuvia Gefen, Alex Retzker +1
The impact of measurement imperfections on quantum metrology protocols has not been approached in a systematic manner so far. In this work, we tackle this issue by generalising fir…
Achieving fault tolerance against amplitude-damping noise
Akshaya Jayashankar, My Duy Hoang Long, Hui Khoon Ng +1
With the intense interest in small, noisy quantum computing devices comes the push for larger, more accurate -- and hence more useful -- quantum computers. While fully fault-tolera…
Resilience of quantum random access memory to generic noise
Connor T. Hann, Gideon Lee, S. M. Girvin +1
Quantum random access memory (QRAM)--memory which stores classical data but allows queries to be performed in superposition--is required for the implementation of numerous quantum…
Randomized linear gate set tomography
Yanwu Gu, Rajesh Mishra, Berthold-Georg Englert +1
Characterizing the noise in the set of gate operations that form the building blocks of a quantum computational device is a necessity for assessing the quality of the device. Here,…
Randomized benchmarking in the presence of time-correlated dephasing noise
Jiaan Qi, Hui Khoon Ng
Randomized benchmarking has emerged as a popular and easy-to-implement experimental technique for gauging the quality of gate operations in quantum computing devices. A typical ran…
Limitations in quantum computing from resource constraints
Marco Fellous-Asiani, Jing Hao Chai, Robert S. Whitney +2
Fault-tolerant schemes can use error correction to make a quantum computation arbitrarily ac- curate, provided that errors per physical component are smaller than a certain thresho…
Direct estimation of minimum gate fidelity
Yiping Lu, Jun Yan Sim, Jun Suzuki +2
With the current interest in building quantum computers, there is a strong need for accurate and efficient characterization of the noise in quantum gate implementations. A key meas…
Constant depth fault-tolerant Clifford circuits for multi-qubit large block codes
Yi-Cong Zheng, Ching-Yi Lai, Todd A. Brun +1
Fault-tolerant quantum computation (FTQC) schemes using large block codes that encode qubits in physical qubits can potentially reduce the resource overhead to a great ex…
Finding good quantum codes using the Cartan form
Akshaya Jayashankar, Anjala M Babu, Hui Khoon Ng +1
We present a simple and fast numerical procedure to search for good quantum codes for storing logical qubits in the presence of independent per-qubit noise. In a key departure from…
User-specified random sampling of quantum channels and its applications
Jun Yan Sim, Jun Suzuki, Berthold-Georg Englert +1
Random samples of quantum channels have many applications in quantum information processing tasks. Due to the Choi--Jamiołkowski isomorphism, there is a well-known correspondence b…
Quantum process tomography via optimal design of experiments
Yonatan Gazit, Hui Khoon Ng, Jun Suzuki
Quantum process tomography --- a primitive in many quantum information processing tasks --- can be cast within the framework of the theory of design of experiment (DoE), a branch o…
Proper error bars for self-calibrating quantum tomography
Jun Yan Sim, Jiangwei Shang, Hui Khoon Ng +1
Self-calibrating quantum state tomography aims at reconstructing the unknown quantum state and certain properties of the measurement devices from the same data. Since the estimates…
Reply to "Comment on `Past of a quantum particle revisited' "
Berthold-Georg Englert, Kelvin Horia, Jibo Dai +2
We stand by our findings in Phys. Rev A. 96, 022126 (2017). In addition to refuting the invalid objections raised by Peleg and Vaidman, we report a retrocausation problem inherent…
Depth reduction for quantum Clifford circuits through Pauli measurements
Yi-Cong Zheng, Ching-Yi Lai, Todd A. Brun +1
Clifford circuits play an important role in quantum computation. Gottesman and Chuang proposed a gate teleportation protocol so that a quantum circuit can be implemented by the tel…
Open-System Quantum Error Correction
Yink Loong Len, Hui Khoon Ng
We study the performance of quantum error correction (QEC) on a system undergoing open-system (OS) dynamics. The noise on the system originates from a joint quantum channel on the…
Comparing randomized benchmarking figure with average infidelity of quantum gate-set
Jiaan Qi, Hui Khoon Ng
Randomized benchmarking (RB) is a popular procedure used to gauge the performance of a set of gates useful for quantum information processing (QIP). Recently, Proctor et al. [Phys.…
Efficient Preparation of Large Block Code Ancilla States for Fault-tolerant Quantum Computation
Yi-Cong Zheng, Ching-Yi Lai, Todd A. Brun
Fault-tolerant quantum computation (FTQC) schemes that use multi-qubit large block codes can potentially reduce the resource overhead to a great extent. A major obstacle is the req…
A digital quantum simulator in the presence of a bath
Yi-Cong Zheng, Hui-Khoon Ng
For a digital quantum simulator (DQS) imitating a target system, we ask the following question: Under what conditions is the simulator dynamics similar to that of the target in the…
Past of a quantum particle: Common sense prevails
Berthold-Georg Englert, Kelvin Horia, Jibo Dai +2
We analyze Vaidman's three-path interferometer with weak path marking [Phys. Rev. A 87, 052104 (2013)] and find that common sense yields correct statements about the particle's pat…
Superfast maximum likelihood reconstruction for quantum tomography
Jiangwei Shang, Zhengyun Zhang, Hui Khoon Ng
Conventional methods for computing maximum-likelihood estimators (MLE) often converge slowly in practical situations, leading to a search for simplifying methods that rely on addit…
Fault-tolerant Preparation of Stabilizer States for Quantum CSS Codes by Classical Error-Correcting Codes
Ching-Yi Lai, Yi-Cong Zheng, Todd A. Brun
Stabilizer states are extensively studied in quantum information theory for their structures based on the Pauli group. Calderbank-Shor-Steane (CSS) stabilizer states are of particu…