Quantum 7, 1055 (2023). https://doi.org/10.22331/q-2023-07-11-1055 Quantum speed limits (QSLs) provide lower bounds on the minimum time required for a process to unfold by using a distance between quantum states and identifying the speed of evolution […]
Quantum 7, 1054 (2023). https://doi.org/10.22331/q-2023-07-11-1054 In device-independent quantum information, correlations between local measurement outcomes observed by spatially separated parties in a Bell test play a fundamental role. Even though it is long-known that the set […]
Quantum 7, 1053 (2023). https://doi.org/10.22331/q-2023-07-11-1053 Extracting tomographic information about quantum states is a crucial task in the quest towards devising high-precision quantum devices. Current schemes typically require measurement devices for tomography that are a priori […]
Quantum 7, 1052 (2023). https://doi.org/10.22331/q-2023-07-11-1052 Banchi & Crooks (Quantum, 2021) have given methods to estimate derivatives of expectation values depending on a parameter that enters via what we call a “perturbed” quantum evolution $xmapsto e^{i(x […]
Quantum 7, 1051 (2023). https://doi.org/10.22331/q-2023-07-11-1051 In the recent years self-testing has grown into a rich and active area of study with applications ranging from practical verification of quantum devices to deep complexity theoretic results. Self-testing […]
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 […]
Since the start of the quantum race Microsoft has placed its bets on the elusive but potentially game-changing topological qubit. Now the company claims its hail Mary has paid off, saying it could build a […]
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