110 citations · 503 across the 19 of their papers we have counts for
19 papers
Optimal Sensing Protocol for Statistically Polarized Nano-NMR with NV Centers
Nicolas Staudenmaier, Anjusha Vijayakumar-Sreeja, Genko Genov +6
Diffusion noise represents a major constraint to successful liquid state nano-NMR spectroscopy. Using the Fisher information as a faithful measure, we theoretically calculate and e…
Charge stability and charge-state-based spin readout of shallow nitrogen-vacancy centers in diamond
Rakshyakar Giri, Rasmus H. Jensen, Deepak Khurana +8
Spin-based applications of the negatively charged nitrogen-vacancy (NV) center in diamonds require efficient spin readout. One approach is the spin-to-charge conversion (SCC), rely…
Decoherence and momentum relaxation in Fermi-polaron Rabi dynamics: a kinetic equation approach
Tomasz Wasak, Matteo Sighinolfi, Johannes Lang +2
Despite the paradigmatic nature of the Fermi-polaron model, the theoretical description of its nonlinear dynamics poses challenges. Here, we apply a quantum kinetic theory of drive…
Power-law scaling of correlations in statistically polarised nano-NMR
Nicolas Staudenmaier, Anjusha Vijayakumar-Sreeja, Santiago Oviedo-Casado +13
Diffusion noise is a major source of spectral line broadening in liquid state nano-scale nuclear magnetic resonance with shallow nitrogen-vacancy centres, whose main consequence is…
On-chip single-photon subtraction by individual silicon vacancy centers in a laser-written diamond waveguide
Michael K. Koch, Michael Hoese, Vibhav Bharadwaj +6
Modifying light fields at single-photon level is a key challenge for upcoming quantum technologies and can be realized in a scalable manner through integrated quantum photonics. La…
Dynamical phase transitions in quantum spin models with antiferromagnetic long-range interactions
Jad C. Halimeh, Maarten Van Damme, Lingzhen Guo +2
In recent years, dynamical phase transitions and out-of-equilibrium criticality have been at the forefront of ultracold gases and condensed matter research. Whereas universality an…
Quantum calibrated magnetic force microscopy
Baha Sakar, Yan Liu, Sibylle Sievers +7
We report the quantum calibration of a magnetic force microscope (MFM) by measuring the two-dimensional magnetic stray field distribution of the MFM tip using a single nitrogen vac…
An integrated magnetometry platform with stackable waveguide-assisted detection channels for sensing arrays
Michael Hoese, Michael K. Koch, Vibhav Bharadwaj +8
The negatively-charged NV-center in diamond has shown great success in nanoscale, high-sensitivity magnetometry. Efficient fluorescence detection is crucial for improving the s…
Multimode-polariton superradiance via Floquet engineering
Christian Høj Johansen, Johannes Lang, Andrea Morales +3
We consider an ensemble of ultracold bosonic atoms within a near-planar cavity, driven by a far detuned laser whose phase is modulated at a frequency comparable to the transverse c…
Efficient Conversion of Nitrogen to Nitrogen-Vacancy Centers in Diamond Particles with High-Temperature Electron Irradiation
Yuliya Mindarava, Rémi Blinder, Christian Laube +9
Fluorescent nanodiamonds containing negatively-charged nitrogen-vacancy (NV) centers are promising for a wide range of applications, such as for sensing, as fluorescence biomar…
Fast logarithmic Fourier-Laplace transform of nonintegrable functions
Johannes Lang, Bernhard Frank
We present an efficient and very flexible numerical fast Fourier-Laplace transform, that extends the logarithmic Fourier transform (LFT) introduced by Haines and Jones [Geophys. J.…
Interaction-induced transparency for strong-coupling polaritons
Johannes Lang, Darrick E. Chang, Francesco Piazza
The propagation of light in strongly coupled atomic media takes place through the formation of polaritons - hybrid quasi-particles resulting from a superposition of an atomic and a…
Non-equilibrium diagrammatic approach to strongly interacting photons
Johannes Lang, Darrick E. Chang, Francesco Piazza
We develop a non-equilibrium field-theoretical approach, based on a systematic diagrammatic expansion, for strongly interacting photons in optically dense atomic media. We consider…
Dynamical Quantum Phase Transitions: A Geometric Picture
Johannes Lang, Bernhard Frank, Jad C. Halimeh
The Loschmidt echo (LE) is a purely quantum-mechanical quantity whose determination for large quantum many-body systems requires an exceptionally precise knowledge of all eigenstat…
Universal phase diagram and scaling functions of imbalanced Fermi gases
Bernhard Frank, Johannes Lang, Wilhelm Zwerger
We discuss the phase diagram and the universal scaling functions of attractive Fermi gases at finite imbalance. The existence of a quantum multicritical point for the unitary gas a…
Concurrence of dynamical phase transitions at finite temperature in the fully connected transverse-field Ising model
Johannes Lang, Bernhard Frank, Jad C. Halimeh
We construct the finite-temperature dynamical phase diagram of the fully connected transverse-field Ising model from the vantage point of two disparate concepts of dynamical critic…
Unambiguous nuclear spin detection using engineered quantum sensing sequence
Zijun Shu, Zhendong Zhang, Qingyun Cao +9
Sensing, localising and identifying individual nuclear spins or frequency components of a signal in the presence of a noisy environments requires the development of robust and sele…
Critical relaxation with overdamped quasiparticles in open quantum systems
Johannes Lang, Francesco Piazza
We study the late-time relaxation following a quench in a driven-dissipative quantum many-body system. We consider the open Dicke model, describing the infinite-range interactions…
Stabilizing shallow color centers in diamond created by nitrogen delta-doping using SF plasma treatment
Christian Osterkamp, Johannes Lang, Jochen Scharpf +5
Here we report the fabrication of stable, shallow (< 5 nm) nitrogen-vacancy (NV) centers in diamond by nitrogen delta doping at the last stage of the chemical vapor deposition (CVD…