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Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models
Pietro Brighi, Marko Ljubotina, Maksym Serbyn
Quantum kinetically constrained models have recently attracted significant attention due to their anomalous dynamics and thermalization. In this work, we introduce a hitherto unexp…
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…
Optimal steering of matrix product states and quantum many-body scars
Marko Ljubotina, Barbara Roos, Dmitry A. Abanin +1
Ongoing development of quantum simulators allows for a progressively finer degree of control of quantum many-body systems. This motivates the development of efficient approaches to…
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…
Entanglement and precession in two-dimensional dynamical quantum phase transitions
Stefano De Nicola, Alexios A. Michailidis, Maksym Serbyn
Non-analytic points in the return probability of a quantum state as a function of time, known as dynamical quantum phase transitions (DQPTs), have received great attention in recen…
Duality approach to quantum annealing of the 3-XORSAT problem
Raimel Medina, Maksym Serbyn
Classical models with complex energy landscapes represent a perspective avenue for the near-term application of quantum simulators. Until now, many theoretical works studied the pe…