7 citations · 13 across the 3 of their papers we have counts for
3 papers
Quantum Private Broadcasting
Anne Broadbent, Carlos E. González-Guillén, Christine Schuknecht
In Private Broadcasting, a single plaintext is broadcast to multiple recipients in an encrypted form, such that each recipient can decrypt locally. When the message is classical, a…
On the spectral gap of random quantum channels
Carlos E. González-Guillén, Marius Junge, Ion Nechita
In this work, we prove a lower bound on the difference between the first and second singular values of quantum channels induced by random isometries, that is tight in the scaling o…
History-state Hamiltonians are critical
Carlos E. González-Guillén, Toby S. Cubitt
All Hamiltonian complexity results to date have been proven by constructing a local Hamiltonian whose ground state -- or at least some low-energy state -- is a "computational histo…