Related papers: Control of solid-state nuclear spin qubits using an electron spin-1/2

Control of solid-state nuclear spin qubits using an electron spin-1/2

URL: http://arxiv.org/abs/2409.08977v2
Date: Mon, 23 Sep 2024 15:53:00 GMT
Title: Control of solid-state nuclear spin qubits using an electron spin-1/2
Authors: Hans K. C. Beukers, Christopher Waas, Matteo Pasini, Hendrik B. van Ommen, Zarije Ademi, Mariagrazia Iuliano, Nina Codreanu, Julia M. Brevoord, Tim Turan, Tim H. Taminiau, Ronald Hanson,
Abstract summary: We show improved control of single nuclear spins by an electron spin-1/2 using Dynamically Decoupled Radio Frequency gates. Our work provides key insights into the challenges and opportunities for nuclear spin control in electron spin-1/2 systems.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Solid-state quantum registers consisting of optically active electron spins with nearby nuclear spins are promising building blocks for future quantum technologies. For electron spin-1 registers, dynamical decoupling (DD) quantum gates have been developed that enable the precise control of multiple nuclear spin qubits. However, for the important class of electron spin-1/2 systems, this control method suffers from intrinsic selectivity limitations, resulting in reduced nuclear spin gate fidelities. Here we demonstrate improved control of single nuclear spins by an electron spin-1/2 using Dynamically Decoupled Radio Frequency (DDRF) gates. We make use of the electron spin-1/2 of a diamond tin-vacancy center, showing high-fidelity single-qubit gates, single-shot readout, and spin coherence beyond a millisecond. The DD control is used as a benchmark to observe and control a single carbon-13 nuclear spin. Using the DDRF control method, we demonstrate improved control on that spin. In addition, we find and control an additional nuclear spin that is insensitive to the DD control method. Using these DDRF gates, we show entanglement between the electron and the nuclear spin with 72(3)% state fidelity. Our extensive simulations indicate that DDRF gate fidelities well in excess are feasible. Finally, we employ time-resolved photon detection during readout to quantify the hyperfine coupling for the electron's optically excited state. Our work provides key insights into the challenges and opportunities for nuclear spin control in electron spin-1/2 systems, opening the door to multi-qubit experiments on these promising qubit platforms.

Related papers

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)
Spin-orbit torque on nuclear spins exerted by a spin accumulation via hyperfine interactions [49.1574468325115]
This article demonstrates that the hyperfine coupling, which consists of Fermi contact and dipolar interactions, can mediate the application of spin-orbit torques acting on nuclear spins. The reactions to the equilibrium and nonequilibrium components of the spin density is a torque on the nucleus with field-like and damping-like components. This nuclear spin-orbit torque is a step toward stabilizing and controlling nuclear magnetic momenta, in magnitude and direction, and realizing nuclear spintronics.
arXiv Detail & Related papers (2023-05-21T08:05:23Z)
Coherent control of a nuclear spin via interactions with a rare-earth ion in the solid-state [0.0]
Individually addressed Er$3+$ ions in solid-state hosts are promising resources for quantum repeaters. While the Er$3+$ electron spin provides a spin-photon interface, ancilla nuclear spins could enable multi-qubit registers with longer storage times. We demonstrate coherent coupling between the electron spin of a single Er$3+$ ion and a single $I=1/2$ nuclear spin in the solid-state host crystal.
arXiv Detail & Related papers (2022-09-12T21:44:21Z)
Tunable Gyromagnetic Augmentation of Nuclear Spins in Diamond [0.0]
This work identifies regimes in which we are able to implement fast quantum control of dark nuclear spins. It lays the foundations for further inquiry into rapid control of long-lived spin qubits at room temperature.
arXiv Detail & Related papers (2021-09-28T06:14:51Z)
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)
Anisotropic electron-nuclear interactions in a rotating quantum spin bath [55.41644538483948]
Spin-bath interactions are strongly anisotropic, and rapid physical rotation has long been used in solid-state nuclear magnetic resonance. We show that the interaction between electron spins of nitrogen-vacancy centers and a bath of $13$C nuclear spins introduces decoherence into the system. Our findings offer new insights into the use of physical rotation for quantum control with implications for quantum systems having motional and rotational degrees of freedom that are not fixed.
arXiv Detail & Related papers (2021-05-16T06:15:00Z)
Controlled coherent dynamics of [VO(TPP)], a prototype molecular nuclear qudit with an electronic ancilla [50.002949299918136]
We show that [VO(TPP)] (vanadyl tetraphenylporphyrinate) is a promising system suitable to implement quantum computation algorithms. It embeds an electronic spin 1/2 coupled through hyperfine interaction to a nuclear spin 7/2, both characterized by remarkable coherence.
arXiv Detail & Related papers (2021-03-15T21:38:41Z)
Entanglement of dark electron-nuclear spin defects in diamond [0.0]
We demonstrate the initialisation, control and entanglement of individual dark spins associated to multiple P1 centers. Results provide a proof-of-principle towards using dark electron-nuclear spin defects as qubits for quantum sensing, computation and networks.
arXiv Detail & Related papers (2020-11-19T14:54:42Z)
Parallel selective nuclear spin addressing for fast high-fidelity quantum gates [5.592842997214522]
Two-qubit gates between nuclear spins of distinct resonance frequencies can be mediated by electron spins. Here we present a different approach inspired by, but not limited to, NV centers in diamond and discuss possible applications.
arXiv Detail & Related papers (2020-09-03T15:05:02Z)
Electrically tuned hyperfine spectrum in neutral Tb(II)(Cp$^{\rm{iPr5}}$)$_2$ single-molecule magnet [64.10537606150362]
Both molecular electronic and nuclear spin levels can be used as qubits. In solid state systems with dopants, an electric field was shown to effectively change the spacing between the nuclear spin qubit levels. This hyperfine Stark effect may be useful for applications of molecular nuclear spins for quantum computing.
arXiv Detail & Related papers (2020-07-31T01:48:57Z)

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