59 citations · 194 across the 8 of their papers we have counts for
8 papers
Linear Cross Entropy Benchmarking with Clifford Circuits
Jianxin Chen, Dawei Ding, Cupjin Huang +1
With the advent of quantum processors exceeding qubits and the high engineering complexities involved, there is a need for holistically benchmarking the processor to have qua…
Near-optimal covariant quantum error-correcting codes from random unitaries with symmetries
Linghang Kong, Zi-Wen Liu
Quantum error correction and symmetries play central roles in quantum information science and physics. It is known that quantum error-correcting codes that obey (are covariant with…
A framework for randomized benchmarking over compact groups
Linghang Kong
Characterization of experimental systems is an essential step in developing and improving quantum hardware. A collection of protocols known as Randomized Benchmarking (RB) was deve…
Quantum Instruction Set Design for Performance
Cupjin Huang, Tenghui Wang, Feng Wu +10
A quantum instruction set is where quantum hardware and software meet. We develop new characterization and compilation techniques for non-Clifford gates to accurately evaluate diff…
Charge-conserving unitaries typically generate optimal covariant quantum error-correcting codes
Linghang Kong, Zi-Wen Liu
Quantum error correction and symmetries play central roles in quantum information science and physics. It is known that quantum error-correcting codes covariant with respect to con…
A Separation of Out-of-time-ordered Correlation and Entanglement
Aram W. Harrow, Linghang Kong, Zi-Wen Liu +2
The out-of-time-ordered correlation (OTOC) and entanglement are two physically motivated and widely used probes of the "scrambling" of quantum information, a phenomenon that has dr…
The performance of the quantum adiabatic algorithm on spike Hamiltonians
Linghang Kong, Elizabeth Crosson
Perturbed Hamming weight problems serve as examples of optimization instances for which the adiabatic algorithm provably out performs classical simulated annealing. In this work we…
Quantum Error-Correcting Codes for Qudit Amplitude Damping
Markus Grassl, Linghang Kong, Zhaohui Wei +2
Traditional quantum error-correcting codes are designed for the depolarizing channel modeled by generalized Pauli errors occurring with equal probability. Amplitude damping channel…