879 citations · 4k across the 60 of their papers we have counts for
61 papers
Quantum metrology with critical driven-dissipative collective spin system
Venelin P. Pavlov, Diego Porras, Peter A. Ivanov
We propose a critical dissipaive quantum metrology schemes for single parameter estimation which are based on a quantum probe consisting of coherently driven ensemble of spin-1…
Cooling microwave fields into general multimode Gaussian states
Nahid Yazdi, Juan José García-Ripoll, Diego Porras +1
We show that a collection of lossy multi-chromatically modulated qubits can be used to dissipatively engineer arbitrary Gaussian states of a set of bosonic modes. Our ideas are esp…
Portfolio optimization with discrete simulated annealing
Álvaro Rubio-García, Juan José García-Ripoll, Diego Porras
Portfolio optimization is an important process in finance that consists in finding the optimal asset allocation that maximizes expected returns while minimizing risk. When assets a…
Topological Josephson parametric amplifier array: A proposal for directional, broadband, and low-noise amplification
Tomás Ramos, Álvaro Gómez-León, Juan José García-Ripoll +2
Low-noise microwave amplifiers are crucial for detecting weak signals in fields such as quantum technology and radio astronomy. However, designing an ideal amplifier is challenging…
Driven-dissipative topological phases in parametric resonator arrays
Álvaro Gómez-León, Tomás Ramos, Alejandro González-Tudela +1
We study the phenomena of topological amplification in arrays of parametric oscillators. We find two phases of topological amplification, both with directional transport and expone…
Topological multi-mode waveguide QED
Carlos Vega, Diego Porras, Alejandro González-Tudela
Topological insulators feature a number of topologically protected boundary modes linked to the value of their bulk invariant. While in one-dimensional systems the boundary modes a…