146 citations · 222 across the 23 of their papers we have counts for
22 papers · 1 filter
Temporal information processing on a 4,500-qubit quantum annealer
Antonio Sannia, Roberto Menta, Pratik Sathe +7
Quantum machine learning could uncover statistical structure beyond the reach of classical models, but this requires quantum models large and expressive enough to be useful and che…
Quantum error correction with global control
Roberto Menta, Lindsay Bassman Oftelie, Ashkan Abedi +5
Reaching fault tolerance means scaling qubit counts by orders of magnitude, a jump that conventional superconducting architectures cannot sustain without solving the so-called `wir…
Mitigating quantum decoherence via global optimal control
Ashkan Abedi, Roberto Menta, Julien Despres +3
We show that global optimal control can drastically suppress the impact of decoherence in globally driven superconducting quantum computing architectures, taking as a prototype a r…
Cavity-mediated probabilistic magic -gate injection
Sofia Cocciaretto, Roberto Menta, Vittorio Giovannetti
Non-Clifford gates are a necessary resource for universal quantum computation, yet their fault-tolerant implementation typically relies on magic-state distillation, which incurs si…
Generalized multilevel amplitude damping channels and their thermodynamic performances
Vito Vetrano, Vittorio Giovannetti, Vasco Cavina
We introduce a new class of quantum channels, the Generalized Multilevel Amplitude Damping (GMAD) channels, to model noise and decoherence effects in a qudit coupled to a thermal e…
Experimental observation of dynamical blockade between transmon qubits via ZZ interaction engineering
Marco Riccardi, Aviv Glezer Moshe, Guido Menichetti +13
We report the experimental realization of strong longitudinal (ZZ) coupling between two superconducting transmon qubits achieved solely through capacitive engineering. By systemati…
Efficient Simulation of the 2D Hubbard Model via Hilbert Space-Filling Curve Mapping
Ashkan Abedi, Vittorio Giovannetti, Dario De Santis
We investigate tensor network simulations of the two-dimensional Hubbard model by mapping the lattice onto a one-dimensional chain using space-filling curves. In particular, we foc…
Overcoming disorder in superconducting globally driven quantum computing
Riccardo Aiudi, Julien Despres, Roberto Menta +5
We study the impact of static disorder on a globally-controlled superconducting quantum computing architecture based on a quasi-two-dimensional ladder geometry [R. Menta et al., Ph…
Extracting and charging energy into almost unknown quantum states
Andrea Canzio, Vasco Cavina, Roberto Menta +1
In this work, we investigate the amount of energy that can be extracted or charged through unitary operations when only minimal information about the state is known. Assuming knowl…
Building globally controlled quantum processors with ZZ interactions
Roberto Menta, Francesco Cioni, Riccardo Aiudi +3
We present a comprehensive framework for constructing various architectures of globally driven quantum computers, with a focus on superconducting qubits. Our approach leverages sta…
The entropic coherence is a necessary resource for non-energy preserving gates
Riccardo Castellano, Vasco Cavina, Marti Perarnau-Llobet +2
We consider the task of implementing non-energy preserving gates (NEPG) on a finite-dimensional system S via an energy-preserving interaction with an external battery B. We prove t…
Exact requirements for battery-assisted qubit gates
Riccardo Castellano, Vasco Cavina, Martí Perarnau-Llobet +2
We consider the implementation of a unitary gate on a qubit system S via a global energy-preserving operation acting on S and an auxiliary system B that can be seen as a battery. W…
Exact non-Markovian master equations: a generalized derivation for Gaussian systems
Antonio D'Abbruzzo, Vittorio Giovannetti, Vasco Cavina
We derive an exact master equation that captures the dynamics of a quadratic quantum system linearly coupled to a Gaussian environment of the same statistics: the Gaussian Master E…
Unifying quantum stochastic methods using Wick's theorem on the Keldysh contour
Vasco Cavina, Antonio D'Abbruzzo, Vittorio Giovannetti
We present a method, based on the Keldysh formalism, for deriving stochastic master equations that describe the non-Markovian dynamics of a quantum system coupled to a Gaussian env…
Conveyor-belt superconducting quantum computer
Francesco Cioni, Roberto Menta, Riccardo Aiudi +2
The processing unit of a solid-state quantum computer consists in an array of coupled qubits, each locally driven with on-chip microwave lines that route carefully-engineered contr…
Many-body enhancement of energy storage in a waveguide-QED quantum battery
Salvatore Tirone, Gian Marcello Andolina, Giuseppe Calajò +2
Quantum batteries have demonstrated remarkable charging properties, showing that a quantum advantage is possible in the realm of quantum thermodynamics. However, finding an effecti…
Single-atom dissipation and dephasing in Dicke and Tavis-Cummings quantum batteries
Andrea Canzio, Vasco Cavina, Marco Polini +1
We study the influence of single-atom dissipation and dephasing noise on the performance of Dicke and Tavis-Cummings quantum batteries, where the electromagnetic field of the cavit…
Steady-state entanglement scaling in open quantum systems: A comparison between several master equations
Antonio D'Abbruzzo, Davide Rossini, Vittorio Giovannetti +1
We investigate the scaling of the fermionic logarithmic negativity (FLN) between complementary intervals in the steady state of a driven-dissipative tight-binding critical chain, c…
Genuine quantum advantage in non-linear bosonic quantum batteries
Gian Marcello Andolina, Vittoria Stanzione, Vittorio Giovannetti +1
Finding a quantum battery model that displays a genuine quantum advantage, while being prone to experimental fabrication, is an extremely challenging task. In this Letter we propos…
Globally driven superconducting quantum computing architecture
Roberto Menta, Francesco Cioni, Riccardo Aiudi +2
We propose a platform for implementing a universal, globally driven quantum computer based on a 2D ladder hosting three different species of superconducting qubits. In stark contra…
Optimized QUBO formulation methods for quantum computing
Dario De Santis, Salvatore Tirone, Stefano Marmi +1
Several combinatorial optimization problems can be solved with NISQ devices once that a corresponding quadratic unconstrained binary optimization (QUBO) form is derived. The aim of…
Materials and devices for fundamental quantum science and quantum technologies
Marco Polini, Francesco Giazotto, Kin Chung Fong +14
Technologies operating on the basis of quantum mechanical laws and resources such as phase coherence and entanglement are expected to revolutionize our future. Quantum technologies…