21 citations · 54 across the 24 of their papers we have counts for
9 papers · 1 filter
Logical Error Rates of XZZX and Rotated Quantum Surface Codes
Diego Forlivesi, Lorenzo Valentini, Marco Chiani
Surface codes are versatile quantum error-correcting codes known for their planar geometry, making them ideal for practical implementations. While the original proposal used Pauli…
Exploiting Pilot Mixtures in Coded Random Access
Lorenzo Valentini, Elena Bernardi, Enrico Paolini
The construction of preamble sequences for channel estimation by superposition of orthogonal pilots can improve performance of massive grant-free uplink from machine-type devices.…
Heterogeneous radio access with multiple latency targets
Israel Leyva-Mayorga, Jose Manuel Gimenez-Guzman, Lorenzo Valentini +1
Since the advent of ultra-reliable and low-latency communications (URLLC), the requirements of low-latency applications tend to be completely characterized by a single pre-defined…
Quantum Two-Way Protocol Beyond Superdense Coding: Joint Transfer of Data and Entanglement
Lorenzo Valentini, Kristian Skafte Jensen, René Bødker Christensen +2
In this article, we introduce a generalization of one-way superdense coding to two-way communication protocols for transmitting classical bits by using entangled quantum pairs. The…
Interference Cancellation Algorithms for Grant-Free Multiple Access with Massive MIMO
Lorenzo Valentini, Marco Chiani, Enrico Paolini
In next generation Internet-of-Things, the overhead introduced by grant-based multiple access protocols may engulf the access network as a consequence of the unprecedented number o…
Performance Analysis of Quantum CSS Error-Correcting Codes via MacWilliams Identities
Diego Forlivesi, Lorenzo Valentini, Marco Chiani
We analyze the performance of quantum stabilizer codes, one of the most important classes for practical implementations, on both symmetric and asymmetric quantum channels. To this…
Reliable Quantum Communications based on Asymmetry in Distillation and Coding
Lorenzo Valentini, René Bødker Christensen, Petar Popovski +1
The reliable provision of entangled qubits is an essential precondition in a variety of schemes for distributed quantum computing. This is challenged by multiple nuisances, such as…
An Implementation of the Optimal Scheme for Energy Efficient Bus Encoding
Lorenzo Valentini, Marco Chiani
In computer system buses, most of the energy is spent to change the voltage of each line from high to low or vice versa. Bus encoding schemes aim to improve energy efficiency by li…
Performance Analysis of Quantum Error-Correcting Surface Codes over Asymmetric Channels
Lorenzo Valentini, Diego Forlivesi, Marco Chiani
One of the main challenge for an efficient implementation of quantum information technologies is how to counteract quantum noise. Quantum error correcting codes are therefore of pr…