1.2k citations · 4.9k across the 66 of their papers we have counts for
6 papers · 1 filter
Entanglement barrier and its symmetry resolution: theory and experiment
Aniket Rath, Vittorio Vitale, Sara Murciano +6
The operator entanglement (OE) is a key quantifier of the complexity of a reduced density matrix. In out-of-equilibrium situations, e.g. after a quantum quench of a product state,…
Recursive greedy initialization of the quantum approximate optimization algorithm with guaranteed improvement
Stefan H. Sack, Raimel A. Medina, Richard Kueng +1
The quantum approximate optimization algorithm (QAOA) is a variational quantum algorithm, where a quantum computer implements a variational ansatz consisting of layers of alter…
Quantum mean states are nicer than you think: fast algorithms to compute states maximizing average fidelity
A. Afham, Richard Kueng, Chris Ferrie
Fidelity is arguably the most popular figure of merit in quantum sciences. However, many of its properties are still unknown. In this work, we resolve the open problem of maximizin…
Experimental single-setting quantum state tomography
Roman Stricker, Michael Meth, Lukas Postler +7
Quantum computers solve ever more complex tasks using steadily growing system sizes. Characterizing these quantum systems is vital, yet becoming increasingly challenging. The gold-…
The randomized measurement toolbox
Andreas Elben, Steven T. Flammia, Hsin-Yuan Huang +4
Increasingly sophisticated programmable quantum simulators and quantum computers are opening unprecedented opportunities for exploring and exploiting the properties of highly entan…
Avoiding barren plateaus using classical shadows
Stefan H. Sack, Raimel A. Medina, Alexios A. Michailidis +2
Variational quantum algorithms are promising algorithms for achieving quantum advantage on near-term devices. The quantum hardware is used to implement a variational wave function…