A large-scale quantum simulator on a diamond surface at room temperature

By J. Cai, A. Retzker, Fedor Jelezko, Martin Bodo Plenio. Nature Physics, 2012

283 citations recorded by the source corpus.

Strongly correlated quantum many-body systems may exhibit exotic phases, such as spin liquids and supersolids. Although their numerical simulation becomes intractable for as few as 50 particles, quantum simulators offer a route to overcome this computational barrier. However, proposed realizations either require stringent conditions such as low temperature/ultra-high vacuum, or are extremely hard to scale. Here, we propose a new solid-state architecture for a scalable quantum simulator that consists of strongly interacting nuclear spins attached to the diamond surface. Initialization, control and read-out of this quantum simulator can be accomplished with nitrogen-vacancy centers implanted in diamond. The system can be engineered to simulate a wide variety of strongly correlated spin models. Owing to the superior coherence time of nuclear spins and nitrogen-vacancy centers in diamond, our proposal offers new opportunities towards large-scale quantum simulation at ambient conditions of temperature and pressure. Controllable quantum systems can be used to emulate intractable quantum many-body problems, but such simulators remain an experimental challenge. Nuclear spins on a diamond surface promise an improved large-scale quantum simulator operating at room temperature.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/006bbc3d0a016a52f10c3dee683bbd1257bef7aa

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In Atomic and Molecular Physics, and Optics

In Condensed Matter Physics

In Materials Chemistry

Citations in the corpus

Materials challenges and opportunities for quantum computing hardware (2021, background): “As another example, QIP schemes with arrays of atomic defects are typically based on dipolar or hyperfine interactions between defects (249, 250), which requires exquisite control over both the strength and sign of the interaction.”
Quantum Simulation (2013, background): “, 2008b) Nuclear spins on diamond surface (Cai et al., 2013)”
Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe (2022, background): “In particular, they satisfy – to some extent – the DiVincenzo criteria for quantum computation: it is possible to individuate well defined energy levels to encode qubits states that can be initialized and manipulated via laser excitation and microwaves; the system state can be measured via fluoresce”