Quantum 6, 742 (2022). https://doi.org/10.22331/q-2022-06-20-742 Universal gate sets for quantum computing have been known for decades, yet no universal gate set has been proposed for particle-conserving unitaries, which are the operations of interest in quantum […]
Quantum 6, 741 (2022). https://doi.org/10.22331/q-2022-06-20-741 We introduce a novel model of multipartite entanglement based on topological links, generalizing the graph/hypergraph entropy cone program. We demonstrate that there exist link representations of entropy vectors which provably […]
Quantum 6, 740 (2022). https://doi.org/10.22331/q-2022-06-20-740 We design faster-than-adiabatic state transfers (switching of quantum numbers) in time-dependent coupled-oscillator Hamiltonians. The manipulation to drive the process is found using a two-dimensional invariant recently proposed in S. Simsek […]
Quantum 6, 739 (2022). https://doi.org/10.22331/q-2022-06-17-739 Solving the time-dependent Schrödinger equation is an important application area for quantum algorithms. We consider Schrödinger’s equation in the semi-classical regime. Here the solutions exhibit strong multiple-scale behavior due to […]
Quantum 6, 738 (2022). https://doi.org/10.22331/q-2022-06-15-738 Recent works have investigated the emergence of a new kind of random matrix behaviour in unitary dynamics following a quantum quench. Starting from a time-evolved state, an ensemble of pure […]
Quantum 6, 737 (2022). https://doi.org/10.22331/q-2022-06-14-737 We derive a universal nonperturbative bound on the distance between unitary evolutions generated by time-dependent Hamiltonians in terms of the difference of their integral actions. We apply our result to […]
Quantum 6, 736 (2022). https://doi.org/10.22331/q-2022-06-14-736 We investigate the homogeneous chiral edge theory of the filling $nu=4/3$ fractional quantum Hall state, which is parameterized by a Luttinger liquid velocity matrix and an electron tunneling amplitude (ignoring […]
Quantum 6, 735 (2022). https://doi.org/10.22331/q-2022-06-13-735 Genuine multipartite entanglement (GME) is considered a powerful form of entanglement since it corresponds to those states that are not biseparable, i.e. a mixture of partially separable states across different […]
Quantum 6, 734 (2022). https://doi.org/10.22331/q-2022-06-13-734 We examine the following problem: given a collection of Clifford gates, describe the set of unitaries generated by circuits composed of those gates. Specifically, we allow the standard circuit operations […]
War, disease, division—things aren’t looking too rosy for humanity at the moment. But thanks to Microsoft, at least we’ll be listening to Stevie Wonder after the apocalypse. The tech giant is partnering with Elire Group […]
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