Realizing highly entangled states in asymmetrically coupled three NV centers at room temperature
arXiv:2009.00570 · doi:10.1063/5.0043334
Abstract
Despite numerous efforts the coupling between randomly arranged multi-NV centers and also resonators has not been improved significantly mainly due to our limited knowledge of their entanglement times (2t_ent). Here, we demonstrate a very strong coupling between three-NV centers by using a simulated triple electron-electron resonance experiment based on a new quantum (U_C) gate on IBM quantum simulator with 2t_ent ~12.5 microsecond arranged is a triangular configuration. Interestingly through breaking the symmetry of couplings an even lower 2t_ent ~6.3 μs can be achieved. This simulation not only explains the luminescence spectra in recently observed three-NV centers [Haruyama, Nat. Commun. 2019] but also shows a large improvement of the entanglement in artificially created structures through a cyclic redistribution of couplings. Realistically disordered coupling configurations of NV centers qubits with short time periods and high (0.89-0.99) fidelity of states clearly demonstrate possibility of accurate quantum registers operated at room temperature.
References in corpus (21)
- Quantum entanglement
- Self-Verifying Variational Quantum Simulation of the Lattice Schwinger Model
- Room temperature entanglement between distant single spins in diamond
- Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout
- Deep autoregressive models for the efficient variational simulation of many-body quantum systems
- The high-coherence fluxonium qubit
- Quantum decoherence dynamics of divacancy spins in silicon carbide
- Training of Quantum Circuits on a Hybrid Quantum Computer
- Witnessing eigenstates for quantum simulation of Hamiltonian spectra
- Gate fidelity and coherence of an electron spin in a Si/SiGe quantum dot with micromagnet
- Decoherence of near-surface nitrogen-vacancy centers due to electric field noise
- Analog quantum chemistry simulation
- 16-qubit IBM universal quantum computer can be fully entangled
- Parton Physics on a Quantum Computer
- Dissipative preparation of entangled states between two spatially separated nitrogen-vacancy centers
- A programmable two-qubit solid-state quantum processor under ambient conditions
- Generalized lattice Wilson-Dirac fermions in (1+1) dimensions for atomic quantum simulation and topological phases
- Selective decoupling and Hamiltonian engineering in dipolar spin networks
- All-microwave holonomic control of an electron-nuclear two-qubit register in diamond
- Effects of Rashba-spin-orbit coupling on superconducting boron-doped nanocrystalline diamond films: evidence of interfacial triplet superconductivity
- Experimental Simulation of Hybrid Quantum Systems and Entanglement on a Quantum Computer