4 papers
Measuring the tangle of three-qubit states
Adrián Pérez-Salinas, Diego García-Martín, Carlos Bravo-Prieto +1
We present a quantum circuit that transforms an unknown three-qubit state into its canonical form, up to relative phases, given many copies of the original state. The circuit is ma…
Scaling of variational quantum circuit depth for condensed matter systems
Carlos Bravo-Prieto, Josep Lumbreras-Zarapico, Luca Tagliacozzo +1
We benchmark the accuracy of a variational quantum eigensolver based on a finite-depth quantum circuit encoding ground state of local Hamiltonians. We show that in gapped phases, t…
Quantum unary approach to option pricing
Sergi Ramos-Calderer, Adrián Pérez-Salinas, Diego García-Martín +4
We present a quantum algorithm for European option pricing in finance, where the key idea is to work in the unary representation of the asset value. The algorithm needs novel circu…
Quantum Singular Value Decomposer
Carlos Bravo-Prieto, Diego García-Martín, José I. Latorre
We present a variational quantum circuit that produces the Singular Value Decomposition of a bipartite pure state. The proposed circuit, that we name Quantum Singular Value Decompo…