135 citations · 572 across the 23 of their papers we have counts for
24 papers
Impact of Photoelectric Readout Noise on Magnetic Field Sensitivity of NV Centers in Diamond
Ilia Chuprina, Genko Genov, Christoph Findler +3
Nitrogen-vacancy (NV) centers in diamond are of great interest for nano- and macro-scale magnetic field sensing. Most sensing protocols rely on conventional optical readout, which…
High-Fidelity Single-Shot Readout and Selective Nuclear Spin Control for a Spin-1/2 Quantum Register in Diamond
Prithvi Gundlapalli, Philipp J. Vetter, Genko Genov +5
Quantum networks offer a way to overcome the size and complexity limitations of single quantum devices by linking multiple nodes into a scalable architecture. Group-IV color center…
Robust gigahertz-range ac magnetometry with an ensemble of NV centers in diamond using concatenated continuous dynamical decoupling
Takuya Kitamura, Genko Genov, Alon Salhov +5
Sub-picotesla level magnetometry has been demonstrated using negatively-charged nitrogen-vacancy (NV) centers in diamond by increasing the number of spins simultaneously used for s…
Overcoming frequency resolution limits using a solid-state spin quantum sensor
Qingyun Cao, Genko T. Genov, Yaoming Chu +4
The ability to determine precisely the separation of two frequencies is fundamental to spectroscopy, yet the resolution limit poses a critical challenge: distinguishing two incoher…
Quantum Memory Enhanced Multipoint Correlation Spectroscopy for Statistically Polarized NMR
Tobias Spohn, Nicolas Staudenmaier, Philipp J. Vetter +6
Nuclear magnetic resonance spectroscopy with solid-state spin sensors is a promising pathway for the detection of nuclear spins at the micro- and nanoscale. Although many nanoscale…
Efficiency of optimal control for noisy spin qubits in diamond
Hendry M. Lim, Genko T. Genov, Roberto Sailer +4
Decoherence is a major challenge for quantum technologies. A way to mitigate its negative impact is by employing quantum optimal control. The decoherence dynamics varies significan…
Robust Noise Suppression and Quantum Sensing by Continuous Phased Dynamical Decoupling
Daniel Louzon, Genko T. Genov, Nicolas Staudenmaier +5
We propose and demonstrate experimentally continuous phased dynamical decoupling (CPDD), where we apply a continuous field with discrete phase changes for quantum sensing and robus…
Coherent Control of a Long-Lived Nuclear Memory Spin in a Germanium-Vacancy Multi-Qubit Node
Nick Grimm, Katharina Senkalla, Philipp J. Vetter +6
The ability to process and store information on surrounding nuclear spins is a major requirement for group-IV color center-based repeater nodes. We demonstrate coherent control of…
High-Fidelity Electron Spin Gates for Scaling Diamond Quantum Register
Timo Joas, Florian Ferlemann, Roberto Sailer +9
Diamond is a promising platform for quantum information processing as it can host highly coherent qubits that could allow for the construction of large quantum registers. A prerequ…
Protecting Quantum Information via Destructive Interference of Correlated Noise
Alon Salhov, Qingyun Cao, Jianming Cai +3
Decoherence and imperfect control are crucial challenges for quantum technologies. Common protection strategies rely on noise temporal autocorrelation, which is not optimal if othe…
Germanium Vacancy in Diamond Quantum Memory Exceeding 20 ms
Katharina Senkalla, Genko Genov, Mathias H. Metsch +2
Negatively charged group-IV defects in diamond show great potential as quantum network nodes due to their efficient spin-photon interface. However, reaching sufficiently long coher…
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…
Robust two-state swap by stimulated Raman adiabatic passage
Genko T. Genov, Simon Rochester, Marcis Auzinsh +2
Efficient initialization and manipulation of quantum states is important for numerous applications and it usually requires the ability to perform high fidelity and robust swapping…
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…
Zero- and Low-Field Sensing with Nitrogen Vacancy Centers
Philipp J. Vetter, Alastair Marshall, Genko T. Genov +8
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 the…
Universal Composite Pulses for Efficient Population Inversion with an Arbitrary Excitation Profile
Genko T. Genov, Marcel Hain, Nikolay V. Vitanov +1
We introduce a method to rotate arbitrarily the excitation profile of universal broadband composite pulse sequences for robust high-fidelity population inversion. These pulses comp…
Efficient and robust signal sensing by sequences of adiabatic chirped pulses
Genko T. Genov, Yachel Ben-Shalom, Fedor Jelezko +2
We propose a scheme for sensing of an oscillating field in systems with large inhomogeneous broadening and driving field variation by applying sequences of phased, adiabatic, chirp…
Mixed Dynamical Decoupling
Genko T. Genov, Nati Aharon, Fedor Jelezko +1
We propose a scheme for mixed dynamical decoupling (MDD), where we combine continuous dynamical decoupling with robust sequences of phased pulses. Specifically, we use two fields f…
Rephasing efficiency of sequences of phased pulses in spin-echo and light-storage experiments
Genko T. Genov, Daniel Schraft, Thomas Halfmann
We investigate the rephasing efficiency of sequences of phased pulses for spin echoes and light storage by electromagnetically induced transparency (EIT). We derive a simple theore…
Experimental demonstration of composite stimulated Raman adiabatic passage
Alexander Bruns, Genko T. Genov, Marcel Hain +2
We experimentally demonstrate composite stimulated Raman adiabatic passage (CSTIRAP), which combines the concepts of composite pulse sequences and adiabatic passage. The technique…
Arbitrarily Accurate Pulse Sequences for Robust Dynamical Decoupling
Genko T. Genov, Daniel Schraft, Nikolay V. Vitanov +1
We introduce universally robust sequences for dynamical decoupling, which simultaneously compensate pulse imperfections and the detrimental effect of a dephasing environment to an…
Correction of Arbitrary Errors in Population Inversion of Quantum Systems by Universal Composite Pulses
Genko T. Genov, Daniel Schraft, Thomas Halfmann +1
We introduce universal broadband composite pulse sequences for robust high-fidelity population inversion in two-state quantum systems, which compensate deviations in any experiment…
Dynamical suppression of unwanted transition paths in multistate quantum systems
Genko T. Genov, Nikolay V. Vitanov
We introduce a method to suppress unwanted transition channels, even without knowing their couplings, and achieve perfect population transfer in multistate quantum systems by the a…
Propagation of light polarization in a birefringent medium: Exact analytic models
G. T. Genov, A. A. Rangelov, N. V. Vitanov
Driving the analogy between the coherent excitation of a two-state quantum system and the torque equation of motion, we present exact analytic solutions to different models for man…