Robust All-Optical Single-Shot Readout of NV Centers in Diamond
- URL: http://arxiv.org/abs/2006.02938v2
- Date: Tue, 8 Dec 2020 08:33:16 GMT
- Title: Robust All-Optical Single-Shot Readout of NV Centers in Diamond
- Authors: Dominik M. Irber, Francesco Poggiali, Fei Kong, Michael Kieschnick,
Tobias L\"uhmann, Damian Kwiatkowski, Jan Meijer, Jiangfeng Du, Fazhan Shi,
Friedemann Reinhard
- Abstract summary: We show an all-optical spin readout scheme that achieves single-shot fidelity even if photon collection is poor.
The scheme is based on spin-dependent excitation at cryogenic temperature combined with spin-to-charge conversion.
We prove this technique to work on shallow implanted NV centers as they are required for sensing and scalable NV-based quantum registers.
- Score: 5.9403120410554555
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: High-fidelity projective readout of a qubit's state in a single experimental
repetition is a prerequisite for various quantum protocols of sensing and
computing. Achieving single-shot readout is challenging for solid-state qubits.
For Nitrogen-Vacancy (NV) centers in diamond, it has been realized using
nuclear memories or resonant excitation at cryogenic temperature. All of these
existing approaches have stringent experimental demands. In particular, they
require a high efficiency of photon collection, such as immersion optics or
all-diamond micro-optics. For some of the most relevant applications, such as
shallow implanted NV centers in a cryogenic environment, these tools are
unavailable. Here we demonstrate an all-optical spin readout scheme that
achieves single-shot fidelity even if photon collection is poor (delivering
less than 10$^3$ clicks/second). The scheme is based on spin-dependent resonant
excitation at cryogenic temperature combined with spin-to-charge conversion,
mapping the fragile electron spin states to the stable charge states. We prove
this technique to work on shallow implanted NV centers as they are required for
sensing and scalable NV-based quantum registers.
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