83 citations · 370 across the 19 of their papers we have counts for
19 papers
Universal scaling framework for parameterized quantum evolutions at criticality
Jan T. Schneider, Cristian Tabares, Alejandro González-Tudela +1
Variational ansätze are a cornerstone of quantum many-body physics, providing compact approximations to complex ground states using finite resources. Recent quantum-technology adva…
Programming optical-lattice Fermi-Hubbard quantum simulators
Cristian Tabares, Christian Kokail, Peter Zoller +2
Fermionic atoms in optical lattices provide a native implementation of Fermi-Hubbard (FH) models that can be used as analog quantum simulators of many-body fermionic systems. Recen…
Chiral quantum optics: recent developments, and future directions
D. G. Suárez-Forero, M. Jalali Mehrabad, C. Vega +2
Chiral quantum optics is a growing field of research where light-matter interactions become asymmetrically dependent on momentum and spin, offering novel control over photonic and…
Passive photonic CZ gate with two-level emitters in chiral multi-mode waveguide QED
Tomás Levy-Yeyati, Carlos Vega, Tomás Ramos +1
Engineering deterministic photonic gates with simple resources is one of the long-standing challenges in photonic quantum computing. Here, we design a passive conditional gate betw…
Long-range interactions in Weyl dense atomic arrays protected from dissipation and disorder
Iñaki García-Elcano, Paloma A. Huidobro, Jorge Bravo-Abad +1
Long-range interactions are a key resource in many quantum phenomena and technologies. Free-space photons mediate power-law interactions but lack tunability and suffer from decoher…
Topological, multi-mode amplification induced by non-reciprocal, long-range dissipative couplings
Carlos Vega, Alberto Muñoz de las Heras, Diego Porras +1
Non-reciprocal couplings or drivings are known to induce steady-state, directional, amplification in driven-dissipative bosonic lattices. This amplification phenomenon has been rec…
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…
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…
Tunable photon-mediated interactions between spin-1 systems
Cristian Tabares, Erez Zohar, Alejandro González-Tudela
The exchange of virtual photons between quantum optical emitters in cavity QED or quantum nanophotonic setups induces interactions between them which can be harnessed for quantum i…
Manipulating Generalized Dirac Cones In Quantum Metasurfaces
María Blanco de Paz, Alejandro González-Tudela, Paloma Arroyo Huidobro
We discuss the emergence and manipulation of generalised Dirac cones in the subradiant collective modes of quantum metasurfaces. We consider a collection of single quantum emitters…
Unconventional mechanism of virtual-state population through dissipation
Alejandro Vivas-Viaña, Alejandro González-Tudela, Carlos Sánchez Muñoz
Virtual states are a central concept in quantum mechanics. By definition, the probability of finding a quantum system in a virtual state should be vanishingly small at all times. I…
Tunable directional emission and collective dissipation with quantum metasurfaces
David Fernández-Fernández, Alejandro González-Tudela
Subwavelength atomic arrays, recently labeled as quantum metamaterials, have emerged as an exciting platform for obtaining novel quantum optical phenomena. The strong interference…
Qubit-photon bound states in topological waveguides with long-range hoppings
Carlos Vega, Miguel Bello, Diego Porras +1
Quantum emitters interacting with photonic band-gap materials lead to the appearance of qubit-photon bound states that mediate decoherence-free, tunable emitter-emitter interaction…
Spin many-body phases in standard and topological waveguide QED simulators
Miguel Bello, Gloria Platero, Alejandro González-Tudela
Quantum spin models find applications in many different areas, such as spintronics, high-Tc superconductivity, and even complex optimization problems. However, studying their many-…
Generation of Photonic Matrix Product States with Rydberg Atomic Arrays
Zhi-Yuan Wei, Daniel Malz, Alejandro González-Tudela +1
We show how one can deterministically generate photonic matrix product states with high bond and physical dimensions with an atomic array if one has access to a Rydberg-blockade me…
Frequency-resolved photon correlations in cavity optomechanics
Mikołaj K. Schmidt, Ruben Esteban, Geza Giedke +2
Frequency-resolved photon correlations have proven to be a useful resource to unveil nonlinearities hidden in standard observables such as the spectrum or the standard (color-blind…
Non-stationary dynamics and dissipative freezing in squeezed superradiance
Carlos Sánchez Muñoz, Berislav Buča, Joseph Tindall +3
In this work, we study the driven-dissipative dynamics of a coherently-driven spin ensemble with a squeezed, superradiant decay. This decay consists of a sum of both raising and lo…
Filtering Multiphoton Emission from State-of-the-Art Cavity QED
Carlos Sánchez Muñoz, Fabrice P. Laussy, Elena del Valle +2
Engineering multiphoton states is an outstanding challenge with applications in multiple fields, such as quan- tum metrology, quantum lithography or even biological systems. State-…
Deterministic Generation of Photon Pairs within the Bad Cavity Limit
Yue Chang, Alejandro González-Tudela, Carlos Sánchez-Muñoz +2
The development, characterization and control of -photon sources are instrumental for quantum technological applications. This work constitutes a step forward in this direction,…