Spin-Photon Coupling for Atomic Qubit Devices in Silicon

Osika, E. N.; Kocsis, Sacha; Hsueh, Yu‐Ling; Monir, Serajum; Chua, Cassandra; Lam, Hubert; Voisin, B.; Simmons, M. Y.; Rogge, Sven; Rahman, Rajib

doi:10.1103/physrevapplied.17.054007

Cited by 9 publications

(5 citation statements)

References 60 publications

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“…Moreover, we shed light on new properties of single artificial atoms in silicon, suggesting the possibility of two different types of G-center-like structures observed so far. Despite G-centers—and artificial atoms in silicon in general—being still under investigation, the impressive amount of literature generated in the past few years suggests that emitters in silicon may indeed hold promise as viable candidates for practical integration and large-scale quantum information processing 1 , 32 , 33 .…”

Section: Discussionmentioning

confidence: 99%

“…Quantum emitters in silicon are promising candidates for scalable quantum information processing 1 . Unlike platforms based on different host materials, these systems excel in meeting multiple key requirements at once: (i) they emit directly into the telecommunications wavelength band, enabling long-distance communication transfer without the need for any frequency conversion, (ii) have shown great spin coherence properties 2 , 3 , and (iii) remarkably, can leverage the maturity of the silicon microelectronics and photonics industry 4 to realize scalable devices.…”

Section: Introductionmentioning

confidence: 99%

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Cavity-enhanced single artificial atoms in silicon

Saggio,

Errando-Herranz,

Gyger

et al. 2024

Nat Commun

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Artificial atoms in solids are leading candidates for quantum networks, scalable quantum computing, and sensing, as they combine long-lived spins with mobile photonic qubits. Recently, silicon has emerged as a promising host material where artificial atoms with long spin coherence times and emission into the telecommunications band can be controllably fabricated. This field leverages the maturity of silicon photonics to embed artificial atoms into the world’s most advanced microelectronics and photonics platform. However, a current bottleneck is the naturally weak emission rate of these atoms, which can be addressed by coupling to an optical cavity. Here, we demonstrate cavity-enhanced single artificial atoms in silicon (G-centers) at telecommunication wavelengths. Our results show enhancement of their zero phonon line intensities along with highly pure single-photon emission, while their lifetime remains statistically unchanged. We suggest the possibility of two different existing types of G-centers, shedding new light on the properties of silicon emitters.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cavity-enhanced single artificial atoms in silicon

Saggio,

Errando-Herranz,

Gyger

et al. 2024

Nat Commun

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“…1a ) using the hyperfine interaction to mediate electric dipole spin resonance (EDSR). To date, the EDSR mechanism has been proposed for qubit control 16 , 29 and long-range spin coupling 30 in flip–flop qubit architectures, where the two basis states are the ( ) and ( ) states of a donor delocalized across two different orbital states. Now, we show that it can also be operated within a single multi-donor qubit register utilizing the hyperfine interaction.…”

Section: Mainmentioning

confidence: 99%

High-fidelity initialization and control of electron and nuclear spins in a four-qubit register

Reiner,

Chung,

Misha

et al. 2024

Nat. Nanotechnol.

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Single electron spins bound to multi-phosphorus nuclear spin registers in silicon have demonstrated fast (0.8 ns) two-qubit $$\sqrt{\mathrm{SWAP}}$$ SWAP gates and long spin relaxation times (~30 s). In these spin registers, when the donors are ionized, the nuclear spins remain weakly coupled to their environment, allowing exceptionally long coherence times. When the electron is present, the hyperfine interaction allows coupling of the spin and charge degrees of freedom for fast qubit operation and control. Here we demonstrate the use of the hyperfine interaction to enact electric dipole spin resonance to realize high-fidelity ($$F=10{0}_{-6}^{+0}$$ F = 10 0 − 6 + 0 %) initialization of all the nuclear spins within a four-qubit nuclear spin register. By controllably initializing the nuclear spins to $$\left\vert \Downarrow \Downarrow \Downarrow \right\rangle$$ ⇓ ⇓ ⇓ , we achieve single-electron qubit gate fidelities of F = 99.78 ± 0.07% (Clifford gate fidelities of 99.58 ± 0.14%), above the fault-tolerant threshold for the surface code with a coherence time of $${T}_{2}^{\,* }=12\,\upmu {{{\rm{s}}}}$$ T 2 * = 12 μ s .

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“…It is expected that quantum-enhanced sensing will considerably improve the precision with which various system parameters may be measured. Platforms for implementing new sensor protocols range from the nanoscale to the planetary scale, utilizing localized spins and photons [11]. Other platforms require the development of new science and technology.…”

Section: Conceptual Backgroundmentioning

confidence: 99%

Exploring Quantum Sensing Potential for Systems Applications

et al. 2023

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The current rise of quantum technology is compelled by quantum sensing research. Thousands of research labs are developing and testing a broad range of sensor prototypes. However, there is a lack of knowledge about specific applications and real-world use cases where the benefits of these sensors will be most pronounced. This study presents a comprehensive review of quantum sensing state-of-practice. It also provides a detailed analysis of how quantum sensing overcomes the existing limitations of sensordriven systems' precision and performance. Based on the review of over 500 quantum sensor prototype reports, we determined four groups of quantum sensors and discussed their readiness for commercial usage. We concluded that quantum magnetometry and quantum optics are the most advanced sensing technologies with empirically proven results. In turn, quantum timing and kinetics are still in the early stages of practical validation. In addition, we defined four systems domains in which quantum sensors offer a solution for existing limitations of conventional sensing technologies. These domains are 1) GPS-free positioning and navigating services, 2) time-based operations, 3) topological visibility, and 4) environment detection, prediction, and modeling. Finally, we discussed the current constraints of quantum sensing technologies and offered directions for future research.

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Spin-Photon Coupling for Atomic Qubit Devices in Silicon

Cited by 9 publications

References 60 publications

Cavity-enhanced single artificial atoms in silicon

Cavity-enhanced single artificial atoms in silicon

High-fidelity initialization and control of electron and nuclear spins in a four-qubit register

Exploring Quantum Sensing Potential for Systems Applications

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