3.9k citations · 28.3k across the 275 of their papers we have counts for
8 papers · 2 filters
Achieving the Holevo bound via sequential measurements
Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone
We present a new decoding procedure to transmit classical information in a quantum channel which, saturating asymptotically the Holevo bound, achieves the optimal rate of the commu…
Sequential projective measurements for channel decoding
Seth Lloyd, Vittorio Giovannetti, Lorenzo Maccone
We study the transmission of classical information in quantum channels. We present a decoding procedure that is very simple but still achieves the channel capacity. It is used to g…
The optimal unitary dilation for bosonic Gaussian channels
Filippo Caruso, Jens Eisert, Vittorio Giovannetti +1
A generic quantum channel can be represented in terms of a unitary interaction between the information-carrying system and a noisy environment. Here, the minimal number of quantum…
The quantum mechanics of time travel through post-selected teleportation
Seth Lloyd, Lorenzo Maccone, Raul Garcia-Patron +2
This paper discusses the quantum mechanics of closed timelike curves (CTC) and of other potential methods for time travel. We analyze a specific proposal for such quantum time trav…
Quantum Defragmentation Algorithm
Daniel Burgarth, Vittorio Giovannetti
In this addendum of our paper [D. Burgarth and V. Giovannetti, Phys. Rev. Lett. 99, 100501 (2007)] we prove that during the transformation that allows one to enforce control by rel…
Closed timelike curves via post-selection: theory and experimental demonstration
Seth Lloyd, Lorenzo Maccone, Raul Garcia-Patron +8
Closed timelike curves (CTCs) are trajectories in spacetime that effectively travel backwards in time: a test particle following a CTC can in principle interact with its former sel…
Memory effects in attenuation and amplification quantum processes
Cosmo Lupo, Vittorio Giovannetti, Stefano Mancini
With increasing communication rates via quantum channels, memory effects become unavoidable whenever the use rate of the channel is comparable to the typical relaxation time of the…
Communication at the quantum speed limit along a spin chain
Michael Murphy, Simone Montangero, Vittorio Giovannetti +1
Spin chains have long been considered as candidates for quantum channels to facilitate quantum communication. We consider the transfer of a single excitation along a spin-1/2 chain…