274 citations · 932 across the 21 of their papers we have counts for
23 papers
Fermionic Hamiltonians without trivial low-energy states
Yaroslav Herasymenko, Anurag Anshu, Barbara Terhal +1
We construct local fermionic Hamiltonians with no low-energy trivial states (NLTS), providing a fermionic counterpart to the NLTS theorem. Distinctly from the qubit case, we define…
Thrifty shadow estimation: re-using quantum circuits and bounding tails
Jonas Helsen, Michael Walter
Shadow estimation is a recent protocol that allows estimating exponentially many expectation values of a quantum state from ``classical shadows'', obtained by applying random quant…
Optimizing sparse fermionic Hamiltonians
Yaroslav Herasymenko, Maarten Stroeks, Jonas Helsen +1
We consider the problem of approximating the ground state energy of a fermionic Hamiltonian using a Gaussian state. In sharp contrast to the dense case, we prove that strictly -…
Spectral estimation for Hamiltonians: a comparison between classical imaginary-time evolution and quantum real-time evolution
Maarten Stroeks, Jonas Helsen, Barbara Terhal
We present a classical Monte Carlo (MC) scheme which efficiently estimates an imaginary-time, decaying signal for stoquastic (i.e. sign-problem-free) local Hamiltonians. The decay…
Estimating gate-set properties from random sequences
J. Helsen, M. Ioannou, J. Kitzinger +4
With quantum computing devices increasing in scale and complexity, there is a growing need for tools that obtain precise diagnostic information about quantum operations. However, c…
Simultaneous single-qubit driving of semiconductor spin qubits at the fault-tolerant threshold
W. I. L. Lawrie, M. Rimbach-Russ, F. van Riggelen +6
Practical Quantum computing hinges on the ability to control large numbers of qubits with high fidelity. Quantum dots define a promising platform due to their compatibility with se…