no code implementations • 2 Aug 2020 • Stefano Chessa, Vittorio Giovannetti
We introduce Partially Coherent Direct Sum (PCDS) quantum channels, as a generalization of the already known Direct Sum quantum channels.
Quantum Physics
no code implementations • 6 Jul 2020 • Federico Belliardo, Vittorio Giovannetti
In this paper we explore the possibility of performing Heisenberg limited quantum metrology of a phase, without any prior, by employing only maximally entangled states.
Quantum Physics
no code implementations • 31 Jul 2008 • Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone
A quantum RAM, or qRAM, allows one to access superpositions of memory sites, which may contain either quantum or classical information.
Quantum Physics
4 code implementations • 14 Aug 2007 • Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone
A random access memory (RAM) uses n bits to randomly address N=2^n distinct memory cells.
Quantum Physics
