Fast Quantum State Tomography in the Nitrogen Vacancy Center of Diamond
arXiv:2108.13738 · doi:10.1103/PhysRevLett.130.090801
Abstract
Quantum state tomography (QST) is the procedure for reconstructing unknown quantum states from a series of measurements of different observables. Depending on the physical system, different sets of observables have been used for this procedure. In the case of spin-qubits, the most common procedure is to measure the transverse magnetization of the system as a function of time. Here, we present a different scheme that relies on time-independent observables and therefore does not require measurements at different evolution times, thereby greatly reducing the overall measurement time. To recover the full density matrix, we use a set of unitary operations that transform the density operator elements into the directly measurable observable. We demonstrate the performance of this scheme in the electron-nuclear spin system of the nitrogen vacancy center in diamond.
arXiv commentSupplementary Material available by email [email protected] or [email protected]
References in corpus (38)
- Quantum Computing
- The nitrogen-vacancy colour centre in diamond
- Sensitivity Optimization for NV-Diamond Magnetometry
- NMR Techniques for Quantum Control and Computation
- Experimental Quantum State Tomography of Optical Fields and Ultrafast Statistical Sampling
- Prescription for experimental determination of the dynamics of a quantum black box
- Quantum technologies with hybrid systems
- Unknown Quantum States and Operations, a Bayesian View
- Complete Characterization of a Quantum Process: the Two-Bit Quantum Gate
- Robust dynamical decoupling
- Experimental implementation of assisted quantum adiabatic passage in a single spin
- Process tomography of ion trap quantum gates
- Adaptive quantum state tomography improves accuracy quadratically
- Quantum process tomography and Linblad estimation of a solid state qubit
- Protected quantum computing: Interleaving gate operations with dynamical decoupling sequences
- Universal Control of Nuclear Spins Via Anisotropic Hyperfine Interactions
- An alternative quantum fidelity for mixed states of qudits
- Experimental demonstration of quantum state tomography and qubit-qubit interactions for rare-earth-ion based solid state qubits
- Hybrid sensors based on colour centres in diamond and piezoactive layers
- Experimental quantum state tomography of a solid state qubit
- Noise-resilient quantum evolution steered by dynamical decoupling
- Process tomography of dynamical decoupling in a dense optically trapped atomic ensemble
- Efficient Implementation of a Quantum Algorithm in a Single Nitrogen Vacancy Center of Diamond
- Long coherence time of spin qubits in C enriched polycrystalline CVD diamond
- Switched Control of Electron Nuclear Spin Systems
- Efficient quantum gates for individual nuclear spin qubits by indirect control
- High-fidelity state detection and tomography of a single ion Zeeman qubit
- Experimental protection of 2-qubit quantum gates against environmental noise by dynamical decoupling
- Characterization of hyperfine interaction between an NV electron spin and a first-shell 13C nuclear spin in diamond
- Optically detected nuclear quadrupolar interaction of 14N in nitrogen-vacancy centers in diamond
- Experimental study of optimal measurements for quantum state tomography
- Constructing valid density matrices on an NMR quantum information processor via maximum likelihood estimation
- Statistical Inference with Quantum Measurements: Methodologies for Nitrogen Vacancy Centers in Diamond
- Behavior of the maximum likelihood in quantum state tomography
- Improved indirect control of nuclear spins in diamond NV centers
- Estimation of pure quantum states in high dimension at the limit of quantum accuracy through complex optimization and statistical inference
- Towards the speed limit of high fidelity 2-qubit gates
- Pulse sequences for controlled 2- and 3-qubit gates in a hybrid quantum register
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- Theory of Electron Spin Resonance Scanning Tunneling Microscopy: The First Decade