A quantum internet would essentially be unhackable. In the future, sensitive information—financial or national security data, for instance, as opposed to memes and cat pictures—would travel through such a network in parallel to a more […]
Category: singularityhub
Quantum 8, 1349 (2024). https://doi.org/10.22331/q-2024-05-16-1349 A set of orthogonal product states is strongly nonlocal if it is locally irreducible in every bipartition, which shows the phenomenon of strong quantum nonlocality without entanglement. Although such a […]
Quantum 8, 1348 (2024). https://doi.org/10.22331/q-2024-05-14-1348 Motivated by quantum network applications over classical channels, we initiate the study of $n$-party resource states from which LOCC protocols can create EPR-pairs between any $k$ disjoint pairs of parties. […]
Quantum 8, 1347 (2024). https://doi.org/10.22331/q-2024-05-14-1347 Magic is a property of a quantum state that characterizes its deviation from a stabilizer state, serving as a useful resource for achieving universal quantum computation e.g., within schemes that […]
Quantum 8, 1346 (2024). https://doi.org/10.22331/q-2024-05-14-1346 Transitions out of the ground space limit the performance of quantum adiabatic algorithms, while hardware imperfections impose stringent limitations on the circuit depth. We propose an adiabatic echo verification protocol […]
Quantum 8, 1345 (2024). https://doi.org/10.22331/q-2024-05-14-1345 Hypergraph product codes are a promising avenue to achieving fault-tolerant quantum computation with constant overhead. When embedding these and other constant-rate qLDPC codes into 2D, a significant number of nonlocal […]
Quantum 8, 1344 (2024). https://doi.org/10.22331/q-2024-05-14-1344 We define code maps between Calderbank-Shor-Steane (CSS) codes using maps between chain complexes, and describe code surgery between such codes using a specific colimit in the category of chain complexes. […]
Quantum 8, 1343 (2024). https://doi.org/10.22331/q-2024-05-14-1343 Shortening quantum circuits is crucial to reducing the destructive effect of environmental decoherence and enabling useful algorithms. Here, we demonstrate an improvement in such compilation tasks via a combination of […]
Quantum 8, 1342 (2024). https://doi.org/10.22331/q-2024-05-13-1342 The decoherence effect caused by the coupling between the system and the environment undoubtedly leads to the errors in efficient implementations of two (or three) qubit logical gates in quantum […]
Quantum 8, 1341 (2024). https://doi.org/10.22331/q-2024-05-08-1341 We propose an analogue of $text{SU}(1,1)$ interferometry to measure rotation of a spin by using two-spin squeezed states. Attainability of the Heisenberg limit for the estimation of the rotation angle […]
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