Quantum 7, 1050 (2023). https://doi.org/10.22331/q-2023-07-11-1050 The topological charge $m$ of vortex electrons spans an infinite-dimensional Hilbert space. Selecting a two-dimensional subspace spanned by $m=pm 1$, a beam electron in a transmission electron microscope (TEM) can […]
Quantum 7, 1049 (2023). https://doi.org/10.22331/q-2023-07-10-1049 Ionic pseudopotentials are widely used in classical simulations of materials to model the effective potential due to the nucleus and the core electrons. Modeling fewer electrons explicitly results in a […]
Quantum 7, 1048 (2023). https://doi.org/10.22331/q-2023-07-06-1048 In this work, we compute the number of $[[n,k]]_d$ stabilizer codes made up of $d$-dimensional qudits, for arbitrary positive integers $d$. In a seminal work by Gross [23] the number […]
Quantum 7, 1047 (2023). https://doi.org/10.22331/q-2023-07-06-1047 We study the task of encryption with certified deletion (ECD) introduced by Broadbent and Islam (2020), but in a device-independent setting: we show that it is possible to achieve this […]
Quantum 7, 1046 (2023). https://doi.org/10.22331/q-2023-07-03-1046 We present three quantum algorithms for clustering graphs based on higher-order patterns, known as motif clustering. One uses a straightforward application of Grover search, the other two make use of […]
Quantum 7, 1045 (2023). https://doi.org/10.22331/q-2023-06-29-1045 With the fast development of quantum technology, the sizes of both digital and analog quantum systems increase drastically. In order to have better control and understanding of the quantum hardware, […]
Quantum 7, 1044 (2023). https://doi.org/10.22331/q-2023-06-29-1044 Shadow estimation is an efficient method for predicting many observables of a quantum state with a statistical guarantee. In the multi-shot scenario, one performs projective measurement on the sequentially prepared […]
Quantum 7, 1043 (2023). https://doi.org/10.22331/q-2023-06-22-1043 The duration of bidirectional transfer protocols in 1D topological models usually scales exponentially with distance. In this work, we propose transfer protocols in multidomain SSH chains and Creutz ladders that […]
Quantum 7, 1042 (2023). https://doi.org/10.22331/q-2023-06-21-1042 We study the phenomenon of cosmological particle production of Dirac fermions in a Friedmann-Robertson-Walker spacetime, focusing on a $(1+1)-$dimensional case in which the evolution of the scale factor is set […]
Quantum 7, 1041 (2023). https://doi.org/10.22331/q-2023-06-12-1041 We consider a class of translation-invariant 2D tensor network states with a stabilizer symmetry, which we call stabilizer PEPS. The cluster state, GHZ state, and states in the toric code […]
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