Quantum 7, 1165 (2023). https://doi.org/10.22331/q-2023-11-06-1165 Quantum phase estimation is one of the critical building blocks of quantum computing. For early fault-tolerant quantum devices, it is desirable for a quantum phase estimation algorithm to (1) use […]
Quantum 7, 1164 (2023). https://doi.org/10.22331/q-2023-11-06-1164 Over the past three decades significant reductions have been made to the cost of estimating ground-state energies of molecular Hamiltonians with quantum computers. However, comparatively little attention has been paid […]
Quantum 7, 1163 (2023). https://doi.org/10.22331/q-2023-11-03-1163 Simulating properties of quantum materials is one of the most promising applications of quantum computation, both near- and long-term. While real-time dynamics can be straightforwardly implemented, the finite temperature ensemble […]
Quantum 7, 1162 (2023). https://doi.org/10.22331/q-2023-11-03-1162 A unifying formalism of generalized conditional expectations (GCEs) for quantum mechanics has recently emerged, but its physical implications regarding the retrodiction of a quantum observable remain controversial. To address the […]
Quantum 7, 1161 (2023). https://doi.org/10.22331/q-2023-11-03-1161 Landauer’s principle gives a fundamental limit to the thermodynamic cost of erasing information. Its saturation requires a reversible isothermal process, and hence infinite time. We develop a finite-time version of […]
Quantum 7, 1160 (2023). https://doi.org/10.22331/q-2023-11-03-1160 The star-triangle relation plays an important role in the realm of exactly solvable models, offering exact results for classical two-dimensional statistical mechanical models. In this article, we construct integrable quantum […]
Quantum 7, 1159 (2023). https://doi.org/10.22331/q-2023-11-03-1159 Deriving quantum mechanics from information-theoretic postulates is a recent research direction taken, in part, with the view of finding a beyond-quantum theory; once the postulates are clear, we can consider […]
Quantum 7, 1158 (2023). https://doi.org/10.22331/q-2023-11-03-1158 Accurate modeling of decoherence errors in quantum processors is crucial for analyzing and improving gate fidelities. To increase the accuracy beyond that of the Lindblad dynamical map, several generalizations have […]
The scale of quantum computers is growing quickly. In 2022, IBM took the top spot with its 433-qubit Osprey chip. Yesterday, Atom Computing announced they’ve one-upped IBM with a 1,180-qubit neutral atom quantum computer. The […]
Quantum 7, 1157 (2023). https://doi.org/10.22331/q-2023-10-25-1157 When two particles interact primarily through gravity and follow the laws of quantum mechanics, the generation of entanglement is considered a hallmark of the quantum nature of the gravitational interaction. […]
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