174 citations · 1.2k across the 27 of their papers we have counts for
27 papers
Stability Thresholds for Gravitationally Induced Entanglement in Shielded Setups
Jan Bulling, Marit O. E. Steiner, Julen S. Pedernales +1
Proposed experiments for gravitationally induced entanglement (GIE) typically suppress direct electromagnetic interactions between two massive particles by inserting a conducting F…
Optically Hyperpolarized Materials for Levitated Optomechanics
Marit O. E. Steiner, Julen S. Pedernales, Martin B. Plenio
We explore the potential of levitating solids embedded with non-permanent, optically controllable electron spins, which can be used to hyperpolarize their nuclear spin environment…
On the origin of force sensitivity in tests of quantum gravity with delocalised mechanical systems
Julen S. Pedernales, Martin B. Plenio
The detection of the quantum nature of gravity in the low-energy limit hinges on achieving an unprecedented degree of force sensitivity with mechanical systems. Against this backgr…
Testing the quantum nature of gravity without entanglement
Ludovico Lami, Julen S. Pedernales, Martin B. Plenio
Given a unitary evolution on a multi-partite quantum system and an ensemble of initial states, how well can be simulated by local operations and classical communication (LO…
Active spin lattice hyperpolarization: Application to hexagonal boron nitride color centers
F. T. Tabesh, M. Fani, J. S. Pedernales +2
The active driving of the electron spin of a color center is known as a method for the hyperpolarization of the surrounding nuclear spin bath and to initialize a system with large…
On the Significance of Interferometric Revivals for the Fundamental Description of Gravity
Kirill Streltsov, Julen S. Pedernales, Martin B. Plenio
We show that an interaction between a harmonic oscillator and a two-level test mass (TLTM) mediated by an LOCC channel produces a signature that in [D. Carney et al., PRX Quantum 2…
Robust Macroscopic Matter-Wave Interferometry with Solids
Julen S. Pedernales, Martin B. Plenio
Matter-wave interferometry with solids is highly susceptible to minute fluctuations of environmental fields, including gravitational effects from distant sources. Hence, experiment…
Enhancing Gravitational Interaction between Quantum Systems by a Massive Mediator
Julen S. Pedernales, Kirill Streltsov, Martin B. Plenio
In 1957 Feynman suggested that the quantum/classical character of gravity may be assessed by testing the gravitational interaction due to source masses in superposition. However, i…
Ground-State Cooling of Levitated Magnets in Low-Frequency Traps
Kirill Streltsov, Julen S. Pedernales, Martin B. Plenio
We present a ground-state cooling scheme for the mechanical degrees of freedom of mesoscopic magnetic particles levitated in low-frequency traps. Our method makes use of a binary s…
Enhanced force sensitivity and entanglement in periodically driven optomechanics
F. Cosco, J. S. Pedernales, M. B. Plenio
Squeezing is a resource that enables precision enhancements in quantum metrology and can be used as a basis for the generation of entanglement by linear optics. While strong squeez…
Decoherence-Free Rotational Degrees of Freedom for Quantum Applications
Julen S. Pedernales, Francesco Cosco, Martin B. Plenio
We employ spherical -designs for the systematic construction of solids whose rotational degrees of freedom can be made robust to decoherence due to external fluctuating fields w…
Motional Dynamical Decoupling for Matter-Wave Interferometry
Julen S. Pedernales, Gavin W. Morley, Martin B. Plenio
Matter-wave interferometry provides a remarkably sensitive tool for probing minute forces and, potentially, the foundations of quantum physics by making use of interference between…
Quantum simulation of the quantum Rabi model in a trapped ion
Dingshun Lv, Shuoming An, Zhenyu Liu +5
The quantum Rabi model, involving a two-level system and a bosonic field mode, is arguably the simplest and most fundamental model describing quantum light-matter interactions. His…
Nonlinear Quantum Rabi Model in Trapped Ions
Xiao-Hang Cheng, Iñigo Arrazola, Julen S. Pedernales +3
We study the nonlinear dynamics of trapped-ion models far away from the Lamb-Dicke regime. This nonlinearity induces a sideband cooling blockade, stopping the propagation of quantu…
Dirac Equation in (1+1)-Dimensional Curved Spacetime and the Multiphoton Quantum Rabi Model
J. S. Pedernales, M. Beau, S. M. Pittman +4
We introduce an exact mapping between the Dirac equation in (1+1)-dimensional curved spacetime (DCS) and a multiphoton quantum Rabi model (QRM). A background of a (1+1)-dimensional…
Entanglement Measures in Embedding Quantum Simulators with Nuclear Spins
Tao Xin, Julen S. Pedernales, Enrique Solano +1
We implement an embedding quantum simulator (EQS) in nuclear spin systems. The experiment consists of a simulator of up to three qubits, plus a single ancillary qubit, where we are…
Quantum simulation of quantum channels in nuclear magnetic resonance
Tao Xin, Shi-Jie Wei, Julen S. Pedernales +2
We propose and experimentally demonstrate an efficient framework for the quantum simulation of quantum channels in NMR. Our approach relies on the suitable decomposition of non-uni…
A Single-Ion Reservoir as a High-Sensitive Sensor of Electric Signals
Francisco Domínguez, Íñigo Arrazola, Jaime Doménech +4
A single-ion reservoir has been tested, and characterized in order to be used as a highly sensitive optical detector of electric signals arriving at the trapping electrodes. Our sy…
Fermion-antifermion scattering via boson exchange in a trapped ion
Xiang Zhang, Kuan Zhang, Yangchao Shen +7
Quantum field theories describe a wide variety of fundamental phenomena in physics. However, their study often involves cumbersome numerical simulations. Quantum simulators, on the…
Measurement of linear response functions in Nuclear Magnetic Resonance
Tao Xin, Julen S. Pedernales, Lucas Lamata +2
We measure multi-time correlation functions of a set of Pauli operators on a two-level system, which can be used to retrieve its associated linear response functions. The two-level…
Digital-Analog Quantum Simulation of Spin Models in Trapped Ions
I. Arrazola, J. S. Pedernales, L. Lamata +1
We propose a method to simulate spin models in trapped ions using a digital-analog approach, consisting in a suitable gate decomposition in terms of analog blocks and digital steps…
A Study on Fast Gates for Large-Scale Quantum Simulation with Trapped Ions
R. L. Taylor, C. D. B. Bentley, J. S. Pedernales +4
Large-scale digital quantum simulations require thousands of fundamental entangling gates to construct the simulated dynamics. Despite success in a variety of small-scale simulatio…
Measuring Entanglement in a Photonic Embedding Quantum Simulator
Juan C. Loredo, Marcelo P. Almeida, Roberto Di Candia +4
Measuring entanglement is a demanding task that usually requires full tomography of a quantum system, involving a number of observables that grows exponentially with the number of…
Quantum Rabi Model with Trapped Ions
J. S. Pedernales, I. Lizuain, S. Felicetti +3
We propose the quantum simulation of the quantum Rabi model in all parameter regimes by means of detuned bichromatic sideband excitations of a single trapped ion. We show that curr…