Javier Prior
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View article: Spin-1 Haldane Phase in a Chain of Rydberg Atoms
Spin-1 Haldane Phase in a Chain of Rydberg Atoms Open
We present a protocol to implement a spin-1 chain in Rydberg systems using three Rydberg states close to a Förster resonance. In addition to dipole-dipole interactions, strong van der Waals interactions naturally appear due to the presence…
View article: Heat operator approach to quantum stochastic thermodynamics in the strong-coupling regime
Heat operator approach to quantum stochastic thermodynamics in the strong-coupling regime Open
Heat exchanged between an open quantum system and its environment exhibits fluctuations that carry crucial signatures of the underlying dynamics. Within the well-established two-point measurement scheme, we identify a 'heat operator,' whos…
View article: Spin-1 Haldane phase in a chain of Rydberg atoms
Spin-1 Haldane phase in a chain of Rydberg atoms Open
We present a protocol to implement a spin-1 chain in Rydberg systems using three Rydberg states close to a Förster resonance. In addition to dipole-dipole interactions, strong van der Waals interactions naturally appear due to the presence…
View article: Low frequency signal detection via correlated Ramsey measurements
Low frequency signal detection via correlated Ramsey measurements Open
The low frequency region of the spectrum is a challenging regime for quantum probes. We support the idea that, in this regime, performing Ramsey measurements carefully controlling the time at which each measurement is initiated is an excel…
View article: Low frequency signal detection via correlated Ramsey measurements
Low frequency signal detection via correlated Ramsey measurements Open
The low frequency region of the spectrum is a challenging regime for quantum probes. We support the idea that, in this regime, performing Ramsey measurements carefully controlling the time at which each measurement is initiated is an excel…
View article: Periodically refreshed quantum thermal machines
Periodically refreshed quantum thermal machines Open
We introduce unique class of cyclic quantum thermal machines (QTMs) which can maximize their performance at the finite value of cycle duration where they are most irreversible. These QTMs are based on single-stroke thermodynamic cycles re…
View article: Zero- and Low-Field Sensing with Nitrogen-Vacancy Centers
Zero- and Low-Field Sensing with Nitrogen-Vacancy Centers Open
Over the years, an enormous effort has been made to establish nitrogen\nvacancy (NV) centers in diamond as easily accessible and precise magnetic field\nsensors. However, most of their sensing protocols rely on the application of\nbias mag…
View article: Conformal Properties of Hyperinvariant Tensor Networks
Conformal Properties of Hyperinvariant Tensor Networks Open
Hyperinvariant tensor networks (hyMERA) were introduced as a way to combine the successes of perfect tensor networks (HaPPY) and the multiscale entanglement renormalization ansatz (MERA) in simulations of the AdS/CFT correspondence. Althou…
View article: Zero- and Low-Field Sensing with Nitrogen Vacancy Centers
Zero- and Low-Field Sensing with Nitrogen Vacancy Centers Open
Over the years, an enormous effort has been made to establish nitrogen vacancy (NV) centers in diamond as easily accessible and precise magnetic field sensors. However, most of their sensing protocols rely on the application of bias magnet…
View article: Zero- and Low-field Nano-NMR with Nitrogen Vacancy Centers
Zero- and Low-field Nano-NMR with Nitrogen Vacancy Centers Open
Over the years, an enormous effort has been made to establish nitrogen vacancy (NV) centers in diamond as easily accessible and precise magnetic field sensors. However, most of their sensing protocols rely on the application of bias magnet…
View article: Periodically refreshed baths to simulate open quantum many-body dynamics
Periodically refreshed baths to simulate open quantum many-body dynamics Open
Obtaining dynamics of an interacting quantum many-body system connected to multiple baths initially at different, finite, temperatures and chemical potentials is a challenging problem. This is due to a combination of the prevalence of stro…
View article: Charging a quantum battery with linear feedback control
Charging a quantum battery with linear feedback control Open
Energy storage is a basic physical process with many applications. When considering this task at the quantum scale, it becomes important to optimise the non-equilibrium dynamics of energy transfer to the storage device or battery. Here, we…
View article: Low Field Nano-NMR via Three-Level System Control
Low Field Nano-NMR via Three-Level System Control Open
Conventional control strategies for nitrogen-vacancy centers in quantum sensing are based on a two-level model of their triplet ground state. However, this approach fails in regimes of weak bias magnetic fields or strong microwave pulses, …
View article: Correlated noise in Brownian motion allows for super resolution
Correlated noise in Brownian motion allows for super resolution Open
Diffusion broadening of spectral lines is the main limitation to frequency resolution in non-polarized liquid state nano-NMR. This problem arises from the limited amount of information that can be extracted from the signal before losing co…
View article: Exciton transport enhancement across quantum Su-Schrieffer-Heeger lattices with quartic nonlinearity
Exciton transport enhancement across quantum Su-Schrieffer-Heeger lattices with quartic nonlinearity Open
In the present work we discuss the propagation of excitons across a\none-dimensional Su-Schrieffer-Heeger lattice, which possesses both harmonic\noscillations and weak quartic anharmonicities. When quantizing these\nvibrational degrees of …
View article: Limits on Spectral Resolution Measurements by Quantum Probes
Limits on Spectral Resolution Measurements by Quantum Probes Open
The limits of frequency resolution in nano-NMR experiments have been discussed extensively in recent years. It is believed that there is a crucial difference between the ability to resolve a few frequencies and the precision of estimating …
View article: Exciton transport enhancement across non-linear oscillating lattices
Exciton transport enhancement across non-linear oscillating lattices Open
In the present work we discuss the propagation of excitons across a one-dimensional mobile underlying lattice, which possesses both harmonic and weak anharmonic oscillations. When quantizing these vibrational degrees of freedom we identify…
View article: Unveiling dark states via two-dimensional magnetic pulse spectroscopy
Unveiling dark states via two-dimensional magnetic pulse spectroscopy Open
The study and manipulation of low dipole moment quantum states has been historically difficult due to their inaccessibility by conventional spectroscopic techniques. Controlling the spin in such states requires unfeasibly strong magnetic f…
View article: Determination of the Optimal Size of Photovoltaic Systems by Using Multi-Criteria Decision-Making Methods
Determination of the Optimal Size of Photovoltaic Systems by Using Multi-Criteria Decision-Making Methods Open
The diverse socio-economic and environmental impacts related to the setup of a new photovoltaic installation must be weighed carefully in order to reach the best possible solution. Among the different photovoltaic systems, there are severa…
View article: Determination of the Optimal Size of Photovoltaic Systems by Using Multi-Criteria Decision Making Methods
Determination of the Optimal Size of Photovoltaic Systems by Using Multi-Criteria Decision Making Methods Open
The diverse socio-economic and environmental impacts that the set-up of a new photovoltaic installation has must be weighed carefully in order to reach the best possible solution. Among the different photovoltaic systems there are several …
View article: Exciton-vibrational resonance and dynamics of charge separation in the photosystem II reaction center
Exciton-vibrational resonance and dynamics of charge separation in the photosystem II reaction center Open
A mixing of the exciton and charge transfer states promoted by a resonant vibrational quantum allows faster penetration of excitation energy into the primary photoproduct in the photosystem II reaction center both in laser experiment and u…
View article: Realising a quantum absorption refrigerator with an atom-cavity system
Realising a quantum absorption refrigerator with an atom-cavity system Open
An autonomous quantum thermal machine comprising a trapped atom or ion placed inside an optical cavity is proposed and analysed. Such a machine can operate as a heat engine whose working medium is the quantised atomic motion or as an absor…
View article: Autonomous quantum thermal machines in atom-cavity systems
Autonomous quantum thermal machines in atom-cavity systems Open
An autonomous quantum thermal machine comprising a trapped atom or ion placed inside an optical cavity is proposed and analysed. Such a machine can operate as a heat engine whose working medium is the quantised atomic motion, or as an abso…
View article: Phase-dependent exciton transport and energy harvesting from thermal environments
Phase-dependent exciton transport and energy harvesting from thermal environments Open
Non-Markovian effects in the evolution of open quantum systems have recently\nattracted widespread interest, particularly in the context of assessing the\nefficiency of energy and charge transfer in nanoscale biomolecular networks and\nqua…
View article: Coherence-assisted single-shot cooling by quantum absorption refrigerators
Coherence-assisted single-shot cooling by quantum absorption refrigerators Open
The extension of thermodynamics into the quantum regime has received much\nattention in recent years. A primary objective of current research is to find\nthermodynamic tasks which can be enhanced by quantum mechanical effects. With\nthis g…