173 citations · 316 across the 11 of their papers we have counts for
11 papers
Cascading amplifiers can create exponentially large coherence
Lucas A. Ostrowski, Giacomo Pantaleoni, Howard M. Wiseman +1
A standard laser beam has photon degeneracy, or coherence, , of at most , where is the number of photons in the laser itself. Even quantum-engineered lasers…
Gaussian dynamics in the double Siegel disk
Giacomo Pantaleoni, Nicolas C. Menicucci
We show that deterministic multimode Gaussian channels admit a symmetric-space description. Passing from the n-mode Siegel disk to a doubled version of that space lets general Gaus…
Linear-optical quantum computation with arbitrary error-correcting codes
Blayney W. Walshe, Ben Q. Baragiola, Hugo Ferretti +11
High-rate quantum error correcting codes mitigate the imposing scale of fault-tolerant quantum computers but require efficient generation of non-local, many-body entanglement. We p…
Doubling Efficiency of Hamiltonian Simulation via Generalized Quantum Signal Processing
Dominic W. Berry, Danial Motlagh, Giacomo Pantaleoni +1
Quantum signal processing provides an optimal procedure for simulating Hamiltonian evolution on a quantum computer using calls to a block encoding of the Hamiltonian. In many situa…
Selection and improvement of product formulae for best performance of quantum simulation
Mauro E. S. Morales, Pedro C. S. Costa, Giacomo Pantaleoni +3
Quantum algorithms for simulation of Hamiltonian evolution are often based on product formulae. The fractal methods give a systematic way to find arbitrarily high-order product for…
The Zak transform: a framework for quantum computation with the Gottesman-Kitaev-Preskill code
Giacomo Pantaleoni, Ben Q. Baragiola, Nicolas C. Menicucci
The Gottesman-Kitaev-Preskill (GKP) code encodes a qubit into a bosonic mode using periodic wavefunctions. This periodicity makes the GKP code a natural setting for the Zak transfo…
Hidden qubit cluster states
Giacomo Pantaleoni, Ben Q. Baragiola, Nicolas C. Menicucci
Continuous-variable cluster states (CVCSs) can be supplemented with Gottesman-Kitaev-Preskill (GKP) states to form a hybrid cluster state with the power to execute universal, fault…
Subsystem analysis of continuous-variable resource states
Giacomo Pantaleoni, Ben Q. Baragiola, Nicolas C. Menicucci
Continuous-variable (CV) cluster states are a universal resource for fault-tolerant quantum computation when supplemented with the Gottesman-Kitaev-Preskill (GKP) bosonic code. We…
Particle scattering in a sonic analogue of special relativity
Scott L. Todd, Giacomo Pantaleoni, Valentina Baccetti +1
We investigate a simple toy model of particle scattering in the flat spacetime limit of an analogue-gravity model. The analogue-gravity medium is treated as a scalar field of phono…
Modular Bosonic Subsystem Codes
Giacomo Pantaleoni, Ben Q. Baragiola, Nicolas C. Menicucci
We introduce a framework to decompose a bosonic mode into two virtual subsystems-a logical qubit and a gauge mode. This framework allows the entire toolkit of qubit-based quantum i…
All-Gaussian universality and fault tolerance with the Gottesman-Kitaev-Preskill code
Ben Q. Baragiola, Giacomo Pantaleoni, Rafael N. Alexander +2
The Gottesman-Kitaev-Preskill (GKP) encoding of a qubit within an oscillator is particularly appealing for fault-tolerant quantum computing with bosons because Gaussian operations…