53 citations · 246 across the 19 of their papers we have counts for
19 papers
Closest Accessible Symmetry reduction: a tool for Hamiltonian interpolation analysis
Ana Palacios, Artur Garcia-Saez, Arnau Riera +1
We introduce a framework for analysing the spectrum of Hamiltonian interpolations without heavily relying on discretising the interpolation parameter. The method is based on the co…
Harnessing Quantum Extreme Learning Machines for image classification
A. De Lorenzis, M. P. Casado, M. P. Estarellas +5
Interest in quantum machine learning is increasingly growing due to its potential to offer more efficient solutions for problems that are difficult to tackle with classical methods…
Quantum simulation of one-dimensional fermionic systems with Ising Hamiltonians
Matthias Werner, Artur García-Sáez, Marta P. Estarellas
In recent years, analog quantum simulators have reached unprecedented quality, both in qubit numbers and coherence times. Most of these simulators natively implement Ising-type Ham…
A scalable 2-local architecture for quantum annealing of Ising models with arbitrary dimensions
Ana Palacios, Artur Garcia-Saez, Bruno Julia-Diaz +1
Achieving densely connected hardware graphs is a challenge for most quantum computing platforms today, and a particularly crucial one for the case of quantum annealing applications…
Reinforcement Learning Based Quantum Circuit Optimization via ZX-Calculus
Jordi Riu, Jan Nogué, Gerard Vilaplana +2
We propose a novel Reinforcement Learning (RL) method for optimizing quantum circuits using graph-theoretic simplification rules of ZX-diagrams. The agent, trained using the Proxim…
Scalable Quantum Spin Networks from Unitary Construction
Abdulsalam H. Alsulami, Irene D'Amico, Marta P. Estarellas +1
Spin network systems can be used to achieve quantum state transfer with high fidelity and to generate entanglement. A new approach to design spin-chain-based spin network systems,…
Bounding first-order quantum phase transitions in adiabatic quantum computing
Matthias Werner, Artur García-Sáez, Marta P. Estarellas
In the context of adiabatic quantum computation (AQC), it has been argued that first-order quantum phase transitions (QPTs) due to localisation phenomena cause AQC to fail by expon…
Steered quantum annealing: improving time efficiency with partial information
Ana Palacios de Luis, Artur Garcia-Saez, Marta P. Estarellas
In the computational model of quantum annealing, the size of the minimum gap between the ground state and the first excited state of the system is of particular importance, since i…
Unitary Design of Quantum Spin Networks for Robust Routing, Entanglement Generation, and Phase Sensing
Abdulsalam H. Alsulami, Irene D'Amico, Marta P. Estarellas +1
Spin chains can be used to describe a wide range of platforms for quantum computation and quantum information. They enable the understanding, demonstration, and modeling of numerou…
Quantum reservoir computation utilising scale-free networks
Akitada Sakurai, Marta P. Estarellas, William J. Munro +1
Today's quantum processors composed of fifty or more qubits have allowed us to enter a computational era where the output results are not easily simulatable on the world's biggest…
Dephasing-induced growth of discrete crystalline order in spin networks
Akitada Sakurai, Victor M. Bastidas, Marta P. Estarellas +2
A quantum phase of matter can be understood from the symmetry of the system's Hamiltonian. The system symmetry along the time axis has been proposed to show a new phase of matter r…
Quantum metamorphism
Victor M. Bastidas, Marta P. Estarellas, Tomo Osada +2
Crystals form regular and robust structures that under extreme conditions can melt and recrystallize into different arrangements in a process that is called crystal metamorphism. W…
Evolutionary computation for adaptive quantum device design
Luke Mortimer, Marta P. Estarellas, Timothy P. Spiller +1
As Noisy Intermediate-Scale Quantum (NISQ) devices grow in number of qubits, determining good or even adequate parameter configurations for a given application, or for device calib…
Comparison of entangling protocols in ABC-type spin chains
M. P. Estarellas, T. P. Spiller, I. D'Amico
In this contribution we consider an advantageous building block with potential for various quantum applications: a device based on coupled spins capable of generating and sharing o…
Generation and Robustness of Quantum Entanglement in Spin Graphs
Jan Riegelmeyer, Dan Wignall, Marta P. Estarellas +2
Entanglement is a crucial resource for quantum information processing, and so protocols to generate high fidelity entangled states on various hardware platforms are in demand. Whil…
Effective Compression of Quantum Braided Circuits Aided by ZX-Calculus
Michael Hanks, Marta P. Estarellas, William J. Munro +1
Mapping a quantum algorithm to any practical large-scale quantum computer will require a sequence of compilations and optimizations. At the level of fault-tolerant encoding, one li…
Robust Quantum Entanglement Generation and Generation-plus-Storage Protocols with Spin Chains
Marta P. Estarellas, Irene D'Amico, Timothy P. Spiller
Reliable quantum communication/processing links between modules are a necessary building block for various quantum processing architectures. Here we consider a spin chain system wi…
Topologically protected localised states in spin chains
Marta P. Estarellas, Irene D'Amico, Timothy P. Spiller
We consider spin chain families inspired by the Su, Schrieffer and Hegger (SSH) model. We demonstrate explicitly the topologically induced spatial localisation of quantum states in…
Anderson localisation in spin chains for perfect state transfer
R. Ronke, M. P. Estarellas, I. D'Amico +2
Anderson localisation is an important phenomenon arising in many areas of physics, and here we explore it in the context of quantum information devices. Finite dimensional spin cha…