Optimal control of families of quantum gates

F Sauvage, F Mintert - Physical review letters, 2022‏ - APS
Quantum optimal control (QOC) enables the realization of accurate operations, such as
quantum gates, and supports the development of quantum technologies. To date, many …

Variational quantum gate optimization at the pulse level

S Greenaway, F Petiziol, Z Hongzheng, F Mintert - SciPost Physics, 2024‏ - scipost.org
We experimentally investigate the viability of a variational quantum gate optimization
protocol informed by the underlying physical Hamiltonian of fixed-frequency transmon …

Quantum control without quantum states

M Orozco-Ruiz, NH Le, F Mintert - PRX Quantum, 2024‏ - APS
We show that combining ideas from the fields of quantum invariants and optimal control can
be used to design optimal quantum control solutions without explicit reference to quantum …

Hardware-Efficient Bosonic Quantum Computing with Photon-loss Detection Capability

Y Mori, Y Matsuzaki, S Endo, S Kawabata - arxiv preprint arxiv …, 2024‏ - arxiv.org
Bosonic quantum systems offer the hardware-efficient construction of error detection/error
correction codes by using the infinitely large Hilbert space. However, due to the encoding …

Phonon-mediated quantum gates in trapped ions coupled to an ultracold atomic gas

L Oghittu, A Safavi-Naini, A Negretti, R Gerritsma - Physical Review A, 2024‏ - APS
We study the dynamics of phonon-mediated qubit-qubit interactions between trapped ions in
the presence of an ultracold atomic gas. By deriving and solving a master equation to …

Cross-platform comparison of arbitrary quantum processes

C Zheng, X Yu, K Wang - npj Quantum Information, 2024‏ - nature.com
In this work, we present a protocol for comparing the performance of arbitrary quantum
processes executed on spatially or temporally disparate quantum platforms using Local …

Optimal convex approximations of qubit states under Pauli distance

L Zhang, K Shi, C Yu - Laser Physics, 2024‏ - iopscience.iop.org
Utilizing the l1 norm as the quantum state distance metric, we consider the Pauli distance of
arbitrary target quantum states, that is, the optimal convex approximation of any qubit mixed …

Automated Synthesis of Quantum Algorithms via Classical Numerical Techniques

Y Huang, BE Grossman-Ponemon… - arxiv preprint arxiv …, 2024‏ - arxiv.org
We apply numerical optimization and linear algebra algorithms for classical computers to the
problem of automatically synthesizing algorithms for quantum computers. Using our …

Active learning for quantum mechanical measurements

R Zhu, C Pike-Burke, F Mintert - Physical Review A, 2024‏ - APS
The experimental evaluation of many quantum mechanical quantities requires the
estimation of several directly measurable observables, such as local observables. Due to …

Making the zeroth-order process fidelity independent of state preparation and measurement errors

YH Chen, R Wong, HS Goan - arxiv preprint arxiv:2312.08590, 2023‏ - arxiv.org
In this work, we demonstrate that the zero-fidelity, an approximation to the process fidelity,
when combined with randomized benchmarking, becomes robust to state preparation and …