Contextual Subspace Variational Quantum Eigensolver

Quantum 5, 456 (2021). https://doi.org/10.22331/q-2021-05-14-456 We describe the $textit{contextual subspace variational quantum eigensolver}$ (CS-VQE), a hybrid…

Multi-time correlations in the positive-P, Q, and doubled phase-space representations

Quantum 5, 455 (2021). https://doi.org/10.22331/q-2021-05-10-455 A number of physically intuitive results for the calculation of multi-time…

Qubit-efficient encoding schemes for binary optimisation problems

Quantum 5, 454 (2021). https://doi.org/10.22331/q-2021-05-04-454 We propose and analyze a set of variational quantum algorithms for…

Quantum Chaos is Quantum

Quantum 5, 453 (2021). https://doi.org/10.22331/q-2021-05-04-453 It is well known that a quantum circuit on $N$ qubits…

Error mitigation on a near-term quantum photonic device

Quantum 5, 452 (2021). https://doi.org/10.22331/q-2021-05-04-452 Photon loss is destructive to the performance of quantum photonic devices…

Local master equations bypass the secular approximation

Quantum 5, 451 (2021). https://doi.org/10.22331/q-2021-05-01-451 Master equations are a vital tool to model heat flow through…

Designing locally maximally entangled quantum states with arbitrary local symmetries

Quantum 5, 450 (2021). https://doi.org/10.22331/q-2021-05-01-450 One of the key ingredients of many LOCC protocols in quantum…

Shortcuts to Squeezed Thermal States

Quantum 5, 449 (2021). https://doi.org/10.22331/q-2021-05-01-449 Squeezed state in harmonic systems can be generated through a variety…

Certifying optimality for convex quantum channel optimization problems

Quantum 5, 448 (2021). https://doi.org/10.22331/q-2021-05-01-448 We identify necessary and sufficient conditions for a quantum channel to…

Photonic quantum data locking

Quantum 5, 447 (2021). https://doi.org/10.22331/q-2021-04-28-447 Quantum data locking is a quantum phenomenon that allows us to…