Noisy intermediate-scale quantum algorithms
A universal fault-tolerant quantum computer that can efficiently solve problems such as
integer factorization and unstructured database search requires millions of qubits with low …
integer factorization and unstructured database search requires millions of qubits with low …
Simulating quantum materials with digital quantum computers
LB Oftelie, M Urbanek, M Metcalf, J Carter… - Quantum Science …, 2021 - iopscience.iop.org
Quantum materials exhibit a wide array of exotic phenomena and practically useful
properties. A better understanding of these materials can provide deeper insights into …
properties. A better understanding of these materials can provide deeper insights into …
Generalized quantum circuit differentiation rules
O Kyriienko, VE Elfving - Physical Review A, 2021 - APS
Variational quantum algorithms that are used for quantum machine learning rely on the
ability to automatically differentiate parametrized quantum circuits with respect to underlying …
ability to automatically differentiate parametrized quantum circuits with respect to underlying …
Tunable coupler for realizing a controlled-phase gate with dynamically decoupled regime in a superconducting circuit
Controllable interaction between superconducting qubits is desirable for large-scale
quantum computation and simulation. Here, based on a theoretical proposal by Yan et …
quantum computation and simulation. Here, based on a theoretical proposal by Yan et …
Perfect quantum state transfer in a superconducting qubit chain with parametrically tunable couplings
Faithfully transferring the quantum state is essential for quantum information processing.
Here we demonstrate a fast (in 84 ns) and high-fidelity (99.2%) transfer of arbitrary quantum …
Here we demonstrate a fast (in 84 ns) and high-fidelity (99.2%) transfer of arbitrary quantum …
Photon transport in a Bose-Hubbard chain of superconducting artificial atoms
We demonstrate nonequilibrium steady-state photon transport through a chain of five
coupled artificial atoms simulating the driven-dissipative Bose-Hubbard model. Using …
coupled artificial atoms simulating the driven-dissipative Bose-Hubbard model. Using …
Synthesis of antisymmetric spin exchange interaction and chiral spin clusters in superconducting circuits
According to quantum mechanics, chiral states cannot be non-degenerate eingenstates of a
parity-conserving Hamiltonian. This is in contradiction to the existence of chiral molecules …
parity-conserving Hamiltonian. This is in contradiction to the existence of chiral molecules …
Hamiltonian operator approximation for energy measurement and ground-state preparation
TA Bespalova, O Kyriienko - PRX Quantum, 2021 - APS
The Hamiltonian operator plays a central role in quantum theory being a generator of unitary
quantum dynamics. Its expectation value describes the energy of a quantum system …
quantum dynamics. Its expectation value describes the energy of a quantum system …
Digital-analog quantum simulations using the cross-resonance effect
Digital-analog quantum computation aims to reduce the currently infeasible resource
requirements needed for near-term quantum information processing by replacing …
requirements needed for near-term quantum information processing by replacing …
A quantum annealer with fully programmable all-to-all coupling via Floquet engineering
Quantum annealing is a promising approach to heuristically solving difficult combinatorial
optimization problems. However, the connectivity limitations in current devices lead to an …
optimization problems. However, the connectivity limitations in current devices lead to an …