Quantum 8, 1374 (2024). https://doi.org/10.22331/q-2024-06-17-1374 A semidefinite program (SDP) is a particular kind of convex optimization problem with applications in operations research, combinatorial optimization, quantum information science, and beyond. In this work, we propose variational […]
Quantum 8, 1373 (2024). https://doi.org/10.22331/q-2024-06-17-1373 We consider the classical shadows task for pure states in the setting of both joint and independent measurements. The task is to measure few copies of an unknown pure state […]
Quantum 8, 1372 (2024). https://doi.org/10.22331/q-2024-06-13-1372 We generalize the concept of folding from surface codes to CSS codes by considering certain dualities within them. In particular, this gives a general method to implement logical operations in […]
Quantum 8, 1371 (2024). https://doi.org/10.22331/q-2024-06-13-1371 We propose the regularized compressed double factorization (RC-DF) method to classically compute compressed representations of molecular Hamiltonians that enable efficient simulation with noisy intermediate scale (NISQ) and error corrected quantum […]
Quantum 8, 1370 (2024). https://doi.org/10.22331/q-2024-06-13-1370 Here we study the unitary groups that can be constructed using elements from the qubit Clifford Hierarchy. We first provide a necessary and sufficient canonical form that semi-Clifford and generalized […]
Quantum 8, 1369 (2024). https://doi.org/10.22331/q-2024-06-13-1369 Time-dependent linear differential equations are a common type of problem that needs to be solved in classical physics. Here we provide a quantum algorithm for solving time-dependent linear differential equations […]
Quantum 8, 1368 (2024). https://doi.org/10.22331/q-2024-06-13-1368 Using local operations and classical communication (LOCC), entanglement can be manipulated but not created. However, entanglement can be $embezzled$. In this work, we completely characterize universal embezzling families and demonstrate […]
Quantum 8, 1367 (2024). https://doi.org/10.22331/q-2024-06-13-1367 Mitigation and calibration schemes are central to maximize the computational reach of today’s Noisy Intermediate Scale Quantum (NISQ) hardware, but these schemes are often specialized to exclusively address either coherent […]
Quantum 8, 1366 (2024). https://doi.org/10.22331/q-2024-06-11-1366 Quantifying entanglement is an important task by which the resourcefulness of a quantum state can be measured. Here, we develop a quantum algorithm that tests for and quantifies the separability […]
Quantum 8, 1365 (2024). https://doi.org/10.22331/q-2024-06-11-1365 Quantum phase transitions encompass a variety of phenomena that occur in quantum systems exhibiting several possible symmetries. Traditionally, these transitions are explored by continuously varying a control parameter that connects […]
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