Optimal Control Theory Techniques for Nitrogen Vacancy Ensembles in Single Crystal Diamond

• URL: http://arxiv.org/abs/2307.01242v1
• Date: Mon, 3 Jul 2023 17:26:43 GMT
• Title: Optimal Control Theory Techniques for Nitrogen Vacancy Ensembles in Single Crystal Diamond
• Authors: Madelaine S.Z. Liddy, Troy Borneman, Peter Sprenger and David Cory
• Abstract summary: Nitrogen Vacancy Center Ensembles are excellent candidates for quantum sensors due to their vector magnetometry capabilities. Circularly polarized microwaves enable arbitrary simultaneous control with spin-locking experiments and collective control.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Nitrogen Vacancy Center Ensembles are excellent candidates for quantum sensors due to their vector magnetometry capabilities, deployability at room temperature and simple optical initialization and readout. This work describes the engineering and characterization methods required to control all four Principle Axis Systems (P.A.S.) of NV ensembles in a single crystal diamond without an applied static magnetic field. Circularly polarized microwaves enable arbitrary simultaneous control with spin-locking experiments and collective control using Optimal Control Theory (OCT) in a (100) diamond. These techniques may be further improved and integrated to realize high sensitivity NV-based quantum sensing devices using all four P.A.S. systems.

Related papers

• Robust microwave cavity control for NV ensemble manipulation [0.0]
  Nitrogen-vacancy ensembles can be coherently manipulated with microwave cavities. The pulse shaping for microwave cavities presents the added challenge that the external controls and intra-cavity field amplitudes are not identical. We introduce a method based on Gradient Ascent Pulse Engineering (GRAPE) to optimize external controls, resulting in robust pulses within the cavity.
  arXiv  Detail & Related papers  (2024-10-15T09:24:30Z)
• A spin-refrigerated cavity quantum electrodynamic sensor [1.6713959634020665]
  Quantum sensors based on solid-state defects, in particular nitrogen-vacancy centers in diamond, enable precise measurement of magnetic fields, temperature, rotation, and electric fields. We introduce a cavity quantum electrodynamic (cQED) hybrid system operating in the strong coupling regime, which enables high readout fidelity of an NV ensemble. We demonstrate a broadband sensitivity of 580 fT/$sqrtmathrmHz$ around 15 kHz in ambient conditions.
  arXiv  Detail & Related papers  (2024-04-16T14:56:50Z)
• Control of an environmental spin defect beyond the coherence limit of a central spin [79.16635054977068]
  We present a scalable approach to increase the size of electronic-spin registers. We experimentally realize this approach to demonstrate the detection and coherent control of an unknown electronic spin outside the coherence limit of a central NV. Our work paves the way for engineering larger quantum spin registers with the potential to advance nanoscale sensing, enable correlated noise spectroscopy for error correction, and facilitate the realization of spin-chain quantum wires for quantum communication.
  arXiv  Detail & Related papers  (2023-06-29T17:55:16Z)
• Simulation of ODMR Spectra from Nitrogen-Vacancy Ensembles in Diamond for Electric Field Sensing [0.0]
  We present an open source simulation tool that models the influence of arbitrary electric and magnetic fields on the electronic and nuclear spin states of NV ensembles. Specifically, the code computes the transition strengths and predicts the sensitivity under shot-noise-limited optically-detected magnetic resonance. We show that our code can be used to optimize sensitivity in situations where usual arguments based on neglecting terms in the full Hamiltonian would give sub-optimal results.
  arXiv  Detail & Related papers  (2023-01-10T18:16:12Z)
• All-Optical Nuclear Quantum Sensing using Nitrogen-Vacancy Centers in Diamond [52.77024349608834]
  Microwave or radio-frequency driving poses a significant limitation for miniaturization, energy-efficiency and non-invasiveness of quantum sensors. We overcome this limitation by demonstrating a purely optical approach to coherent quantum sensing. Our results pave the way for highly compact quantum sensors to be employed for magnetometry or gyroscopy applications.
  arXiv  Detail & Related papers  (2022-12-14T08:34:11Z)
• Optimal control of molecular spin qudits [58.720142291102135]
  We demonstrate, numerically, the possibility of manipulating the spin states of molecular nanomagnets with shaped microwave pulses. The state-to-state or full gate transformations can be performed in this way in shorter times than using simple monochromatic resonant pulses. The application of optimal control techniques can facilitate the implementation of quantum technologies based on molecular spin qudits.
  arXiv  Detail & Related papers  (2021-11-30T11:50:46Z)
• Quantum control of nuclear spin qubits in a rapidly rotating diamond [62.997667081978825]
  Nuclear spins in certain solids couple weakly to their environment, making them attractive candidates for quantum information processing and inertial sensing. We demonstrate optical nuclear spin polarization and rapid quantum control of nuclear spins in a diamond physically rotating at $1,$kHz, faster than the nuclear spin coherence time. Our work liberates a previously inaccessible degree of freedom of the NV nuclear spin, unlocking new approaches to quantum control and rotation sensing.
  arXiv  Detail & Related papers  (2021-07-27T03:39:36Z)
• A low-loss ferrite circulator as a tunable chiral quantum system [108.66477491099887]
  We demonstrate a low-loss waveguide circulator constructed with single-crystalline yttrium iron garnet (YIG) in a 3D cavity. We show the coherent coupling of its chiral internal modes with integrated superconducting niobium cavities. We also probe experimentally the effective non-Hermitian dynamics of this system and its effective non-reciprocal eigenmodes.
  arXiv  Detail & Related papers  (2021-06-21T17:34:02Z)
• Optimal control of a nitrogen-vacancy spin ensemble in diamond for sensing in the pulsed domain [52.77024349608834]
  Defects in solid state materials provide an ideal platform for quantum sensing. Control of such an ensemble is challenging due to the spatial variation in both the defect energy levels and in any control field across a macroscopic sample. We experimentally demonstrate that we can overcome these challenges using Floquet theory and optimal control optimization methods.
  arXiv  Detail & Related papers  (2021-01-25T13:01:05Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.